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Exploring the Relationship Between Range of Motion in Knee Rehabilitation Exercises and Pain in Patellofemoral Pain Syndrome

Exploring the Relationship Between Range of Motion in Knee Rehabilitation Exercises and Pain in Patellofemoral Pain Syndrome

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07287267
Enrollment
17
Registered
2025-12-17
Start date
2024-12-01
Completion date
2025-12-04
Last updated
2026-09-02

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

Conditions

Patello Femoral Syndrome

Keywords

Patellofemoral pain syndrome, Range of motion, patellofemoral pain

Brief summary

This study aims to investigate the relationship between knee joint range of motion and pain in patients with patellofemoral pain syndrome (PFPS). In a cross-sectional observational design, PFPS patients will perform trials involving progressively increased knee joint range of motion in three closed-chain exercises: squat, single-leg squat, and split squat. During each trial, participants will report pain levels on a 0-10 Visual Analog Scale (VAS) until either (1) achieving full depth in the respective exercise or (2) reaching a pain level of \>5 on the VAS.

Interventions

OTHERExercise

Exercise with progressively increased range of motion.

Sponsors

Ted Gunhamn
Lead SponsorOTHER

Study design

Observational model
CASE_ONLY
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Age
15 Years to 35 Years

Inclusion criteria

* Patients diagnosed with PFP in only one knee by a licensed healthcare professional. * Aged 15-35 years. * A physical activity level of 3/10 or higher on the Tegner Activity Scale before the injury.

Exclusion criteria

* Any prior injury or condition with residual symptoms that may affect the results. * Current injury or condition affecting the performance of the test. * Resting pain greater than 0-1/10 on the Numeric Pain Rating Scale (NRS) and pain greater than 1-2/10 during light daily activities such as walking, sitting, standing, or climbing stairs.

Design outcomes

Primary

MeasureTime frameDescription
Pain (VAS)Day 1 (Cross sectional single session. Outcomes will be collected during one single session for each participant.)Pain measured 0-10 visual analog scale (VAS) reported during each trial of progressively increased range of motion during a single session.
Range of motionDay 1 (Cross sectional single session. Outcomes will be collected during one single session for each participant.)Degrees of knee flexion measured during each trial in one single session.

Secondary

MeasureTime frameDescription
ForceDay 1 (Cross sectional single session. Outcomes will be collected during one single session for each participant.)Force (N) (peak value) reported during the different trials in one session. Measured by force plates.
Tegner Activity Scale (TAS)Baseline (Administered at the beginning of the study)The Tegner Activity Scale (TAS) will be used to assess the physical activity levels of the participants. Scale from 1-10 where 10 is highest possible physical activity and 1 is sedentary.

Countries

Sweden

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 3, 2026