Background and aims
In the pathogenesis of chronic pelvic pain (CPP) the factor of disorders of biomechanics of musculoskeletal system (MSS) is involved. The purpose of the study was to reveal the peculiarities of biomechanical disorders in patients with chronic pelvic pain (CPP).

Methods
The study included 60 people ranging aged from 20 to 32 years. 30 participants with CPP, 30 participants without any complains. All participants had no degenerative, inflammatory and traumatic lesions of the spine. Complex of tests: neurological examination, manual muscle testing (MMT), visual analysis (VA). 

Results
MMT in participants with CPP: hypotension of lumbar-iliac (40%), gluteus medius (35%), the obturator muscles (22%) and of the adductors of the hip (20%). In participants without CPP: hypotension of lumbar-iliac (20%), gluteus medius (12%), the obturator muscle (8%) and of the adductors of the hip (2%). VA: the average deviation for biauricular line was 2.1°(p<0.05) in individuals with CPP and 1.2°(p<0.05) in individuals without CPP, bicristoiliacal line 2.1°(p<0.05) in individuals with CPP and 1.2°(p<0.05) in individuals without CPP.

Conclusion
A significant deviation of the parameters of biomechanics in individuals with CPP compared with persons without CPP is revealed in the study. Most commonly seen two ways of disorders of the biomechanics of the pelvic region due to disorders in the tonus of the lumbar-iliac muscles: anterior and posterior tilt of the pelvis. The study showed that the indicators of biomechanical disorders should be included in diagnostic algorithms and treatment of CPP.

CHRONIC PELVIC PAIN: BIOMECHANICAL ASPECTS