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The Relationship of the Joint Blockage and Muscle Spasm

The Relationship Between the Blockage of the Sacroiliac Joint (SI) and the Spasm of the Piriformis Muscle.

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07264530
Enrollment
40
Registered
2025-12-04
Start date
2025-11-10
Completion date
2025-11-10
Last updated
2025-12-04

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

Conditions

Joint Dysfunction, Muscle Cramps, NO DECOMPENSATED ILLNESS

Keywords

joint blockage, muscle spasm, muscle irritability

Brief summary

An interventional study aimed at verifying the effect of sacroiliac joint blockage on changes in piriformis muscle tension. The study was conducted on 40 subjects, both male and female. Physical therapy methods were used to diagnose muscle tension as a diagnostic tool, along with a visual analogue scale. The intervention was performed using manual mobilisation techniques commonly used in clinical practice. The effectiveness was verified using the same physical therapy diagnostic tool as at the beginning. The entire research process is time-consuming, taking up to 1 hour per examinee.

Detailed description

Objectives: The main aim of this study is to summarise current knowledge about the relationship between functional joint blockage and chained muscle spasm. To verify the relationship between sacroiliac joint blockage and piriformis muscle using combined therapy as a diagnostic tool, where the main parameter monitored will be the intensity of piriformis muscle irritability before and after sacroiliac joint mobilisation. Methods: Measurements will be taken on a group of 40 subjects. The research sample consists of people aged 18-60, randomly divided into an experimental and a control group. All subjects underwent an initial palpation examination of the piriformis muscle, during which the level of pain was determined on a numerical pain scale. All subjects then underwent measurement of the piriformis muscle's irritability threshold using the Beauty-line device 4000 Topline device. The experimental group then underwent therapeutic intervention in the form of sacroiliac joint mobilisation using the Cluster of Lasslet technique. This was followed by 30 minutes of relaxation. The control group received no therapeutic intervention and only 30 minutes of relaxation between the initial and final examinations. Both groups then underwent the same final examination as at the beginning. The investigators expect a change in piriformis muscle hypertonicity after sacroiliac joint mobilisation, including a reduction in pain in this muscle, at a statistical significance level of 5%.

Interventions

PROCEDUREMobilization technique for sacroiliac joint

The subject lies on their stomach, mobilization maneuvers are performed, a total of 4 maneuvers according to the recommended Cluster of Lasslet procedure for the sacroiliac joint.

Sponsors

Charles University, Czech Republic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

A group of suitable subjects (n=40) is divided into an experimental group and a control group (n=20). All subjects meet the study's inclusion criteria. All subjects undergo the same initial examination, including palpation of the piriformis muscle, joint play of the sacroiliac joint, and a visual analogue scale. The experimental group is treated with mobilisation techniques and left to rest for 30 minutes. The control group receives no mobilisation intervention and is only left to rest for 30 minutes. Subsequently, an exit examination identical to the entrance examination is performed. The results are entered into Excel tables and further processed using statistical methods.

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

* palpation sensitivity of the piriformis muscle in the piriformis line, * limited joint play of the sacroiliac joint, * pain in the lower back, groin, perineum, buttocks, or hips, tenderness in the sacrum, * pain or weakness during resisted abduction at 90° flexion in the hip joint, * positive piriformis sign, positive Freiberg's test, positive Trendelenburg's test, or positive Pace's abduction test. * At least 50% of the accompanying signs of sacroiliac joint blockage must be present in each subject.

Exclusion criteria

* acute (primarily infectious) diseases, * persons in acute condition after an accident, * persons recovering from an accident/illness

Design outcomes

Primary

MeasureTime frameDescription
Changing of piriformis muscle irritabilityone hour at allAfter removing the sacroiliac joint blockage, the irritability threshold of the piriformis muscle increases and its painfulness decreases. The reduction in pain will be evident based on instrumental measurements using the Beauty-line device and palpation examination.

Countries

Czechia

Outcome results

None listed

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