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Clinical Trials/NCT07264530
NCT07264530
Completed
Not Applicable

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

Charles University, Czech Republic1 site in 1 country40 target enrollmentStarted: November 10, 2025Last updated:

Overview

Phase
Not Applicable
Status
Completed
Sponsor
Charles University, Czech Republic
Enrollment
40
Locations
1
Primary Endpoint
Changing of piriformis muscle irritability

Overview

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%.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Treatment
Masking
None

Eligibility Criteria

Ages
18 Years to 60 Years (Adult)
Sex
All
Accepts 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

Outcomes

Primary Outcomes

Changing of piriformis muscle irritability

Time Frame: one hour at all

After 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.

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor
Charles University, Czech Republic
Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Malá Jitka

PhDr. Jitka Malá, Ph.D.

Charles University, Czech Republic

Study Sites (1)

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