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Infracalcaneal Peppering Injection Technique for Chronic Plantar Fasciitis

Infracalcaneal Peppering Injection Technique for Chronic Plantar Fasciitis: Protocol for a Parallel Randomized Clinical Trial

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05868577
Enrollment
41
Registered
2023-05-22
Start date
2023-10-18
Completion date
2024-09-18
Last updated
2025-10-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Plantar Fasciitis

Keywords

corticosteroid injection, infracalcaneal peppering injection, Plantar Fasciitis

Brief summary

Although no single treatment has shown superiority, short-term pain relief may be offered via a targeted local corticosteroid injection (CSI), used often in combination with local anesthetic (LA), which may reduce plantar fasciitis symptoms for up to 1 month. Moreover, administering a CSI is relatively quick and easy for any Provider to perform, though it is not without potential deleterious side effects and risks, including fibroblast degradation, fat pad atrophy, skin depigmentation, and even plantar fascia rupture.

Detailed description

Research performed in other musculoskeletal disorders (e.g. lateral epicondylitis) suggest that the method (i.e peppering vs single bolus deposition) of injection is more favorable than the steroid itself, though evidence for this positive effect in plantar fasciitis is rather scarce. Injection via peppering is a minimally invasive percutaneous technique which involves repeatedly fenestrating the pathologic site (i.e. plantar fascia) via hypodermic needle insertion at the tender area, then sequentially injecting a substance, withdrawing, redirecting, and reinserting all without emerging from the skin. Though hypothetical, this technique is thought to disrupt the degenerative process of Plantar Fasciitis (PF), encouraging both localized bleeding and fibroblastic proliferation and stimulating a local inflammatory response that would trigger the body's own reparative mechanism, leading to recovery.

Interventions

DRUGCorticosteroid injection (CSI) with local anesthetic (LA)

The PI will then administer the injection using an infracalcaneal needle peppering

DRUGLocal anesthetic (LA) with Saline injection

The PI will then administer the injection using an infracalcaneal needle peppering

Sponsors

National Center for Advancing Translational Sciences (NCATS)
CollaboratorNIH
Wake Forest University Health Sciences
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Masking description

A nurse or staff member will open a previously prepared and sealed opaque envelope (prepared beforehand by the clinical coordinator) labeled with the participant identification (ID) of the patient, which will be unique to the individual and different from their Medical Record Number (MRN). In this envelope, they will discover the patient's assigned treatment arm. The nurse or staff member will then prepare the syringe with the assigned treatment arm. Once the syringe is filled with the designated substance, the syringe will be wrapped with opaque tape or dark Coban wrap to conceal the contents in the syringe for both the PI and study participant.

Intervention model description

All patients ages 18 years and up with a diagnosis of plantar heel pain will be screened for inclusion into the study.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Men and women 18 years of age and older * Patient reported history of plantar heel pain and confirmed clinical tenderness of pain with direct palpation of the medial calcaneal tubercle on baseline exam * Diagnosis of chronic plantar fasciitis, defined for study purposes as symptoms greater than or equal to 6 weeks in duration

Exclusion criteria

* Individuals less than 18 years of age * Pregnancy * History of receiving a local heel injection (i.e. corticosteroid injection (CSI) or other injectate) within the last 3 months * Prior heel trauma or surgery * Allergy to local corticosteroid or local anesthesia

Design outcomes

Primary

MeasureTime frameDescription
Visual Analog Scale Score - General Heel TendernessBaselineA sheet of paper with a printed VAS scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their general heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range 0-100.
Visual Analog Scale Score - First Step PainBaselineA sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their first step heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.
Foot Function Index (FFI) ScoreBaselineQuestionnaire that measures pain, activity limitation, and disability in the foot. The FFI consists of 23 items grouped into three subscales: (1) Pain (9 items); (2) Disability (9 items); and (3) Activity Limitation (5 items). Each item is rated on a scale from 0-9 for the Pain and Disability subscales and 0-5 for the Activity Limitation subscale. For each subscale, scores are summed, divided by the maximum possible total for applicable items (excluding any marked not applicable), and multiplied by 100 to yield a percentage score from 0 to 100. Lower FFI scores indicate better foot function, while higher FFI scores reflect greater impairment.

Secondary

MeasureTime frameDescription
Heel Pressure Threshold Score - Asymptomatic FootBaseline, Week 2, Week 4, Week 8, Week 12Using a dolorimeter each participant's heel pressure threshold will be assessed. Level of pain on a 35-point scale will be noted with 0 meaning no pain and 35 meaning extreme pain.
Exit Survey ScoreWeek 12Upon completion of study related procedures and assessments, participants will be given a paper exit survey to complete. 5 questions asked relating to their experience in the study and if they would recommend the study to others. Total score range 1-10 with 1 being worst experience and 10 being best experience.
Heel Tenderness Score - Asymptomatic FootBaseline, week 2, week 4, week 8, week 12The physician will assess heel pain on palpation. Heel tenderness index will be used which has a range of 0-3 points (0 points = no pain, 1 point = painful, 2 points = painful and winces, 3 points = painful, winces, and withdraws).
Heel Tenderness Score - Symptomatic FootBaseline, Week 2, Week 4, Week 8, and Week 12The physician will assess heel pain on palpation. Heel tenderness index will be used which has a range of 0-3 points (0 points = no pain, 1 point = painful, 2 points = painful and winces, 3 points = painful, winces, and withdraws).
Number of Completed ExercisesWeek 2, Week 4, Week 8, and Week 12Participants will document in a daily exercise diary if any of the three recommended exercises (calf stretching, plantar fascia specific stretching, and loading exercise) were completed. Participants will also be asked to document why exercises were not completed if applicable.
Heel Pressure Threshold Score - Symptomatic FootBaseline, Week 2, Week 4, Week 8, and Week 12Using a dolorimeter each participant's heel pressure threshold will be assessed. Level of pain on a 35-point scale will be noted with 0 meaning no pain and 35 meaning extreme pain.

Countries

United States

Participant flow

Participants by arm

ArmCount
Corticosteroid Injection/ Local Anesthetic (CSI/LA)
The PI will then administer the (CSI/LA) injection using an infracalcaneal needle peppering technique as follows: 1. The hypodermic needle is inserted using infracalcaneal injection approach. 2. The hypodermic needle is withdrawn while at the same depositing injectate 3. The hypodermic needle is redirected without emerging from the skin. The PI will perform steps 1-3 standardly 20-25 times. Corticosteroid injection (CSI) with local anesthetic (LA): The PI will then administer the injection using an infracalcaneal needle peppering
21
Local Anesthetic (LA)/Saline Injection
The PI will then administer the (LA/Saline) injection using an infracalcaneal needle peppering technique as follows: 1. The hypodermic needle is inserted using infracalcaneal injection approach. 2. The hypodermic needle is withdrawn while at the same depositing injectate 3. The hypodermic needle is redirected without emerging from the skin. The PI will perform steps 1-3 standardly 20-25 times. Local anesthetic (LA) with Saline injection: The PI will then administer the injection using an infracalcaneal needle peppering
20
Total41

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up55

Baseline characteristics

CharacteristicLocal Anesthetic (LA)/Saline InjectionTotalCorticosteroid Injection/ Local Anesthetic (CSI/LA)
Age, Continuous53.5 years
STANDARD_DEVIATION 13.1
54 years
STANDARD_DEVIATION 12
54 years
STANDARD_DEVIATION 12.4
Clinical Duration of Symptoms125 days
STANDARD_DEVIATION 217
166 days
STANDARD_DEVIATION 272.5
205 days
STANDARD_DEVIATION 323
Diabetes Mellitus Diagnosis1 participants5 participants4 participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants3 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
19 Participants38 Participants19 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Heel Spur Size5.1 mm
STANDARD_DEVIATION 3.9
5.1 mm
STANDARD_DEVIATION 3.5
5.1 mm
STANDARD_DEVIATION 3.3
Patients Diagnosed with Heel Spur15 participants31 participants16 participants
Plantar Fascia Thickness5.2 mm
STANDARD_DEVIATION 2.8
5.2 mm
STANDARD_DEVIATION 1.4
5.1 mm
STANDARD_DEVIATION 1.7
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
2 Participants3 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants1 Participants
Race (NIH/OMB)
White
16 Participants35 Participants19 Participants
Sex: Female, Male
Female
15 Participants36 Participants21 Participants
Sex: Female, Male
Male
5 Participants5 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 210 / 20
other
Total, other adverse events
2 / 212 / 20
serious
Total, serious adverse events
0 / 210 / 20

Outcome results

Primary

Foot Function Index (FFI) Score

Questionnaire that measures pain, activity limitation, and disability in the foot. The FFI consists of 23 items grouped into three subscales: (1) Pain (9 items); (2) Disability (9 items); and (3) Activity Limitation (5 items). Each item is rated on a scale from 0-9 for the Pain and Disability subscales and 0-5 for the Activity Limitation subscale. For each subscale, scores are summed, divided by the maximum possible total for applicable items (excluding any marked not applicable), and multiplied by 100 to yield a percentage score from 0 to 100. Lower FFI scores indicate better foot function, while higher FFI scores reflect greater impairment.

Time frame: Baseline

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Foot Function Index (FFI) Score42.4 score on a scaleStandard Deviation 13.5
Local Anesthetic (LA)/Saline InjectionFoot Function Index (FFI) Score43.5 score on a scaleStandard Deviation 15.2
Primary

Foot Function Index (FFI) Score

Questionnaire that measures pain, activity limitation, and disability in the foot. The FFI consists of 23 items grouped into three subscales: (1) Pain (9 items); (2) Disability (9 items); and (3) Activity Limitation (5 items). Each item is rated on a scale from 0-9 for the Pain and Disability subscales and 0-5 for the Activity Limitation subscale. For each subscale, scores are summed, divided by the maximum possible total for applicable items (excluding any marked not applicable), and multiplied by 100 to yield a percentage score from 0 to 100. Lower FFI scores indicate better foot function, while higher FFI scores reflect greater impairment.

Time frame: Week 2

Population: For the CSI/LA arm, 2 participants did not complete study, 1 missed appointment. For LA/saline arm, 1 participant missed Week 2 appointment, 1 participant did not complete study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Foot Function Index (FFI) Score28.3 score on a scaleStandard Deviation 16.6
Local Anesthetic (LA)/Saline InjectionFoot Function Index (FFI) Score33.1 score on a scaleStandard Deviation 15.5
Primary

Foot Function Index (FFI) Score

Questionnaire that measures pain, activity limitation, and disability in the foot. The FFI consists of 23 items grouped into three subscales: (1) Pain (9 items); (2) Disability (9 items); and (3) Activity Limitation (5 items). Each item is rated on a scale from 0-9 for the Pain and Disability subscales and 0-5 for the Activity Limitation subscale. For each subscale, scores are summed, divided by the maximum possible total for applicable items (excluding any marked not applicable), and multiplied by 100 to yield a percentage score from 0 to 100. Lower FFI scores indicate better foot function, while higher FFI scores reflect greater impairment.

Time frame: Week 4

Population: For CSI/LA arm, 1 participant missed Week 4 appointment, 2 participants did not complete study. For the LA/saline arm, 3 participants did not complete study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Foot Function Index (FFI) Score22.2 score on a scaleStandard Deviation 16.9
Local Anesthetic (LA)/Saline InjectionFoot Function Index (FFI) Score25.3 score on a scaleStandard Deviation 18.8
Primary

Foot Function Index (FFI) Score

Questionnaire that measures pain, activity limitation, and disability in the foot. The FFI consists of 23 items grouped into three subscales: (1) Pain (9 items); (2) Disability (9 items); and (3) Activity Limitation (5 items). Each item is rated on a scale from 0-9 for the Pain and Disability subscales and 0-5 for the Activity Limitation subscale. For each subscale, scores are summed, divided by the maximum possible total for applicable items (excluding any marked not applicable), and multiplied by 100 to yield a percentage score from 0 to 100. Lower FFI scores indicate better foot function, while higher FFI scores reflect greater impairment.

Time frame: Week 8

Population: For the CSI/LA arm, 3 participants missed Week 8 appointment, 4 participants did not finish study. For the LA/saline arm, 4 participants did not finish study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Foot Function Index (FFI) Score22.6 score on a scaleStandard Deviation 20.2
Local Anesthetic (LA)/Saline InjectionFoot Function Index (FFI) Score17.1 score on a scaleStandard Deviation 17.2
Primary

Foot Function Index (FFI) Score

Questionnaire that measures pain, activity limitation, and disability in the foot. The FFI consists of 23 items grouped into three subscales: (1) Pain (9 items); (2) Disability (9 items); and (3) Activity Limitation (5 items). Each item is rated on a scale from 0-9 for the Pain and Disability subscales and 0-5 for the Activity Limitation subscale. For each subscale, scores are summed, divided by the maximum possible total for applicable items (excluding any marked not applicable), and multiplied by 100 to yield a percentage score from 0 to 100. Lower FFI scores indicate better foot function, while higher FFI scores reflect greater impairment.

Time frame: Week 12

Population: For the CSI/LA arm, 5 participants did not complete study. For the LA/saline arm, 5 participants did not complete study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Foot Function Index (FFI) Score26.5 score on a scaleStandard Deviation 23.3
Local Anesthetic (LA)/Saline InjectionFoot Function Index (FFI) Score18.6 score on a scaleStandard Deviation 20.2
Primary

Visual Analog Scale Score - First Step Pain

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their first step heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Baseline

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - First Step Pain62.6 score on a scaleStandard Deviation 20.2
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - First Step Pain70.6 score on a scaleStandard Deviation 15.3
Primary

Visual Analog Scale Score - First Step Pain

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their first step heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 2

Population: For the CSI/LA arm, 2 participants did not complete the study, 2 person missed Week 2 appointment. For LA/saline arm, 2 participants missed Week 2 appointment, 1 participant did not complete study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - First Step Pain40.4 score on a scaleStandard Deviation 26.3
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - First Step Pain50.6 score on a scaleStandard Deviation 23.1
Primary

Visual Analog Scale Score - First Step Pain

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their first step heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 4

Population: For the CSI/LA arm, 2 participants missed Week 4 appointment, 2 participants did not complete study. For LA/saline injection arm, 3 participants did not complete the study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - First Step Pain40.3 score on a scaleStandard Deviation 27.9
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - First Step Pain37.8 score on a scaleStandard Deviation 23.6
Primary

Visual Analog Scale Score - First Step Pain

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their first step heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 8

Population: For the CSI/LA arm, 4 participants did not complete the study, 3 participants missed Week 8 appointment. For the LA/saline arm, 1 participant did not have this data point collected, 4 participants did not complete the study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - First Step Pain38.7 score on a scaleStandard Deviation 32.7
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - First Step Pain24.9 score on a scaleStandard Deviation 23
Primary

Visual Analog Scale Score - First Step Pain

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their first step heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 12

Population: For the CSI/LA arm, 5 participants did not complete study. For the LA/saline arm, 4 participants did not complete the study, 1 participant missed Week 12 appointment.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - First Step Pain37.1 score on a scaleStandard Deviation 29.8
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - First Step Pain22.9 score on a scaleStandard Deviation 22.6
Primary

Visual Analog Scale Score - General Heel Tenderness

A sheet of paper with a printed VAS scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their general heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range 0-100.

Time frame: Baseline

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - General Heel Tenderness46.7 score on a scaleStandard Deviation 19.3
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - General Heel Tenderness47.5 score on a scaleStandard Deviation 17.7
Primary

Visual Analog Scale Score - General Heel Tenderness

A sheet of paper with a printed visual analog score scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their general heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 2

Population: For CSI/LA arm, 2 participants did not complete the study, 2 participant missed Week 2 appointment. For LA/saline arm, 2 participants missed Week 2 appointment, 1 participant did not complete the study, 2 missing data.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - General Heel Tenderness35.9 score on a scaleStandard Deviation 23.1
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - General Heel Tenderness41.8 score on a scaleStandard Deviation 20.3
Primary

Visual Analog Scale Score - General Heel Tenderness

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their general heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range 0-100.

Time frame: Week 4

Population: For CSI/LA arm, 2 participant missed Week 4 appointment, 2 participants did not complete the study 1 missing data. For LA/saline arm, 3 missed appointment, 1 participants did not complete the study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - General Heel Tenderness36.6 score on a scaleStandard Deviation 25.6
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - General Heel Tenderness32.6 score on a scaleStandard Deviation 21.8
Primary

Visual Analog Scale Score - General Heel Tenderness

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their general heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 8

Population: For the CSI.LA arm, 4 participants did not complete the study, 1 participant did not have this data point collected at Week 8 appointment, and 3 participants missed Week 8 appointment. For the LA/saline arm, 4 patients did not complete the study

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - General Heel Tenderness29.3 score on a scaleStandard Deviation 30.8
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - General Heel Tenderness22.6 score on a scaleStandard Deviation 19.6
Primary

Visual Analog Scale Score - General Heel Tenderness

A sheet of paper with a printed visual analog scale will be given to the patient. The patient will be instructed to make a bold dot on the line based on how they rate their general heel pain, using the parameters listed on the scale (0 meaning no pain, 20 meaning mild pain, 50 meaning moderate pain, 80 meaning extreme pain, and 100 meaning the worst pain imaginable). Range = 0-100.

Time frame: Week 12

Population: For CSI/LA arm, 5 participants did not complete the study. For LA/saline arm, 4 patients did not complete the study, and 1 patient missed Week 12 appointment

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Visual Analog Scale Score - General Heel Tenderness31.4 score on a scaleStandard Deviation 25.3
Local Anesthetic (LA)/Saline InjectionVisual Analog Scale Score - General Heel Tenderness24.4 score on a scaleStandard Deviation 23.7
Secondary

Exit Survey Score

Upon completion of study related procedures and assessments, participants will be given a paper exit survey to complete. 5 questions asked relating to their experience in the study and if they would recommend the study to others. Total score range 1-10 with 1 being worst experience and 10 being best experience.

Time frame: Week 12

Population: For the CSI/LA arm, 5 participants did not complete the study, 1 missing data. For the LA/saline arm, 5 did not complete the study.

ArmMeasureValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Exit Survey Score8.8 score on a scaleStandard Deviation 1.8
Local Anesthetic (LA)/Saline InjectionExit Survey Score9.6 score on a scaleStandard Deviation 0.7
Secondary

Heel Pressure Threshold Score - Asymptomatic Foot

Using a dolorimeter each participant's heel pressure threshold will be assessed. Level of pain on a 35-point scale will be noted with 0 meaning no pain and 35 meaning extreme pain.

Time frame: Baseline, Week 2, Week 4, Week 8, Week 12

Population: BL:CSI/LA 1 outlier data excluded; LS/saline 3 outliers. W2:CSI/LA 2 didn't complete study, 2 missed appt; LA/saline 1 didn't complete study, 3 missed appt, 2 outliers. W4:CSI/LA 2 missed appt, 2 didn't complete study; LA/saline 3 didn't complete study, 3 outliers. W8:CSI/LA 4 didn't complete study, 5 missed appt; LA/saline 4 didn't finish study, 1 missing data, 4 outliers. W12:CSI/LA 5 didn't finish study, 1 missing; LA/saline 5 didn't complete study, 1 missed appt, 4 outliers.

ArmMeasureGroupValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Asymptomatic Footweek 215.7 score on a scaleStandard Deviation 7.7
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Asymptomatic Footweek 815.6 score on a scaleStandard Deviation 6.8
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Asymptomatic Footweek 414.5 score on a scaleStandard Deviation 5.3
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Asymptomatic Footweek 1214.4 score on a scaleStandard Deviation 6.1
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Asymptomatic Footbaseline16.0 score on a scaleStandard Deviation 6.5
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Asymptomatic Footweek 1215.2 score on a scaleStandard Deviation 5.9
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Asymptomatic Footbaseline18.0 score on a scaleStandard Deviation 11.5
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Asymptomatic Footweek 219.2 score on a scaleStandard Deviation 12.1
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Asymptomatic Footweek 417.1 score on a scaleStandard Deviation 8.7
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Asymptomatic Footweek 815.4 score on a scaleStandard Deviation 5.4
Secondary

Heel Pressure Threshold Score - Symptomatic Foot

Using a dolorimeter each participant's heel pressure threshold will be assessed. Level of pain on a 35-point scale will be noted with 0 meaning no pain and 35 meaning extreme pain.

Time frame: Baseline, Week 2, Week 4, Week 8, and Week 12

Population: Baseline: CSI/LA 1 outlier, data excluded. W2: CSI/LA 2 didn't complete study, 2 missed appt; LA/saline 1 didn't complete study, 3 missed appt. W4: CSI/LA 2 missed appt, 2 didn't complete study; LA/saline 3 didn't complete study. W8: CSI/LA 4 didn't complete study, 5 missed appt; LA/saline 4 didn't finish study, 1 missing data, 2 outliers data excluded. W12: CSI/LA 5 didn't finish study, 1 missing data; LA/saline 5 didn't complete study, 1 missing data, 2 outliers.

ArmMeasureGroupValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Symptomatic Footweek 212.6 score on a scaleStandard Deviation 6.8
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Symptomatic Footweek 813.4 score on a scaleStandard Deviation 6.8
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Symptomatic Footweek 412.5 score on a scaleStandard Deviation 5.7
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Symptomatic Footweek 1212.8 score on a scaleStandard Deviation 7
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Pressure Threshold Score - Symptomatic Footbaseline12.3 score on a scaleStandard Deviation 7.2
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Symptomatic Footweek 1215.4 score on a scaleStandard Deviation 7.7
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Symptomatic Footbaseline12.3 score on a scaleStandard Deviation 6.8
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Symptomatic Footweek 212.8 score on a scaleStandard Deviation 6
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Symptomatic Footweek 414.1 score on a scaleStandard Deviation 5.9
Local Anesthetic (LA)/Saline InjectionHeel Pressure Threshold Score - Symptomatic Footweek 813.1 score on a scaleStandard Deviation 5.9
Secondary

Heel Tenderness Score - Asymptomatic Foot

The physician will assess heel pain on palpation. Heel tenderness index will be used which has a range of 0-3 points (0 points = no pain, 1 point = painful, 2 points = painful and winces, 3 points = painful, winces, and withdraws).

Time frame: Baseline, week 2, week 4, week 8, week 12

Population: Baseline: CSI/LA 2 missing data; LA/saline 2 missing data. WK 2: CSI/LA 2 missed appt, 2 did not complete study; LA/saline 1 did not complete study, 3 missed appt, 2 missing data. WK 4: CSI/LA 2 missed appt, 2 did not finish study; LA/saline 3 did not finish study. WK 8: CSI/LA 5 missed appt, 4 did not finish study; LA/saline 4 did not finish study, 1 missed appointment. WK 12: CSI/LA 1 missed data, 5 did not finish study; LA/saline 1 missing data, 5 did not finish study.

ArmMeasureGroupValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Asymptomatic Footweek 20.18 score on a scaleStandard Deviation 0.38
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Asymptomatic Footweek 80 score on a scaleStandard Deviation 0
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Asymptomatic Footweek 40 score on a scaleStandard Deviation 0
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Asymptomatic Footweek 120.27 score on a scaleStandard Deviation 0.57
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Asymptomatic Footbaseline0.32 score on a scaleStandard Deviation 0.57
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Asymptomatic Footweek 120.21 score on a scaleStandard Deviation 0.77
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Asymptomatic Footbaseline0.33 score on a scaleStandard Deviation 0.58
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Asymptomatic Footweek 20.21 score on a scaleStandard Deviation 0.56
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Asymptomatic Footweek 40.12 score on a scaleStandard Deviation 0.47
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Asymptomatic Footweek 80.07 score on a scaleStandard Deviation 0.25
Secondary

Heel Tenderness Score - Symptomatic Foot

The physician will assess heel pain on palpation. Heel tenderness index will be used which has a range of 0-3 points (0 points = no pain, 1 point = painful, 2 points = painful and winces, 3 points = painful, winces, and withdraws).

Time frame: Baseline, Week 2, Week 4, Week 8, and Week 12

Population: WK 2: CSI/LA 2 missed appt, 2 did not complete study; LA/saline 3 missed appt, 1 did not complete study. WK 4: CSI/LA 2 missed appt, 2 did not finish study; LA/saline 3 did not finish study. WK 8: CSI/LA 5 missed appt, 4 did not finish study; LA/saline 4 did not finish study, 1 missed appt. WK 12: CSI/LA 1 missed data, 5 did not finish study; LA/saline 5 did not finish study, 1 missing data.

ArmMeasureGroupValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Symptomatic Footweek 21.29 score on a scaleStandard Deviation 0.57
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Symptomatic Footweek 81.7 score on a scaleStandard Deviation 0.55
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Symptomatic Footweek 41.18 score on a scaleStandard Deviation 0.78
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Symptomatic Footweek 121.0 score on a scaleStandard Deviation 0.82
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Heel Tenderness Score - Symptomatic Footbaseline1.95 score on a scaleStandard Deviation 0.65
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Symptomatic Footweek 121.0 score on a scaleStandard Deviation 1
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Symptomatic Footbaseline1.75 score on a scaleStandard Deviation 0.62
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Symptomatic Footweek 21.38 score on a scaleStandard Deviation 0.6
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Symptomatic Footweek 41.35 score on a scaleStandard Deviation 0.76
Local Anesthetic (LA)/Saline InjectionHeel Tenderness Score - Symptomatic Footweek 81.13 score on a scaleStandard Deviation 0.72
Secondary

Number of Completed Exercises

Participants will document in a daily exercise diary if any of the three recommended exercises (calf stretching, plantar fascia specific stretching, and loading exercise) were completed. Participants will also be asked to document why exercises were not completed if applicable.

Time frame: Week 2, Week 4, Week 8, and Week 12

Population: W2: CSI/LA 2 didn't complete study, 2 missed appt, 3 no diary; LA/saline 1 didn't complete study, 1 missed appt, 2 no diary. W4: CSI/LA 3 no diary, 1 missed appt, 2 didn't complete study; LA/saline 3 no diary, 3 didn't complete study. W8: CSI/LA, 1 no diary, 4 didn't complete study, 3 missed appt; LA/saline 4 didn't finish study, 1 no diary. W12: CSI/LA 5 no diary, 5 didn't finish study; LA/saline 4 no diary, 5 didn't complete study.

ArmMeasureGroupValue (MEAN)Dispersion
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Number of Completed Exercisesweek 214.1 exercises completedStandard Deviation 3
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Number of Completed Exercisesweek 413.8 exercises completedStandard Deviation 2.7
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Number of Completed Exercisesweek 826.2 exercises completedStandard Deviation 4.9
Corticosteroid Injection/ Local Anesthetic (CSI/LA)Number of Completed Exercisesweek 1226.9 exercises completedStandard Deviation 4.2
Local Anesthetic (LA)/Saline InjectionNumber of Completed Exercisesweek 1227.2 exercises completedStandard Deviation 3.4
Local Anesthetic (LA)/Saline InjectionNumber of Completed Exercisesweek 213.8 exercises completedStandard Deviation 1.3
Local Anesthetic (LA)/Saline InjectionNumber of Completed Exercisesweek 825.1 exercises completedStandard Deviation 5.6
Local Anesthetic (LA)/Saline InjectionNumber of Completed Exercisesweek 415.9 exercises completedStandard Deviation 3.3

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026