Alterations of the center of pressures in the greater trochanter pain syndrome: Evaluation of pelvitrochanteric injuries through dynamic baropodometry

Abstract

Introduction

Greater Trochanteric Pain Syndrome (GTPS) results in lateral hip pain, particularly noticeable during the single-leg stance phase of gait. This study explores the connection between pelvitrochanteric muscle-tendon lesions and changes in the center of pressure (CoP) line in patients diagnosed with GTPS.

Materials and methods

We conducted a study with 104 GTPS patients. Patients were categorized into two groups based on imaging tests: anatomical lesions (functional alteration with structural damage in pelvitrochanteric area tissues) and functional lesions (functional alterations without structural damage in the pelvitrochanteric area). Using a portable pressure platform, we measured plantar pressures and loads, and analyzed the CoP line and its deviation angle both pre- and post-treatment.

Results

Data revealed that patients with anatomical lesions showed significantly greater alterations in both the CoP line and its deviation angle compared to those with functional lesions.

Discussion

These findings indicate that anatomical lesions in gluteal tendons are associated with changes in CoP during gait, which may subsequently affect pelvic tilt in GTPS patients. We propose baropodometry as a tool for biomechanical analysis of pelvis and hip during gait in GTPS, emphasizing the role of the gluteus medius as a pelvic stabilizer during single-leg stance.

Conclusion

GTPS patients showing a deviation in the CoP line during single-leg stance are more likely to have anatomical lesions in gluteal tendons. The use of dynamic baropodometry for biomechanical analysis of the pelvis and hip provides data that aid and improve understanding of GTPS and the development of effective therapeutic strategies.