|
|
AbstractUnderstanding the Lateral Stability Mechanism of the Hip & PelvisAlison Grimaldi, University of Queensland, AustraliaThe lateral stability mechanism of the hip consists of a complex arrangement of muscles with variable function and differing responses to the presence of joint pathology, or to unloading in the absence of pathology. Clearer understanding of the function and dysfunction of this system will be important for the development of more specific and effective management programmes not only for hip pathologies, but for optimal alignment and function of the lumbopelvic region and the whole lower kinetic chain. The hip abductor synergy primarily responsible for lateral stability can be divided into 3 layers – the superficial layer consisting of the tensor fascia lata muscle, the upper portion of the gluteus maximus muscle, and their connections with the iliotibial band, the intermediate layer including the piriformis and the gluteus medius muscles, with the gluteus minimus muscle the deepest member of the abductor synergy. This presentation will provide evidence from recent research to suggest that our approach to assessment and therapeutic exercise prescription for lateral pelvic stability may need to be re-evaluated. Exercise prescription should address all parts of the abductor synergy in a manner consistent with their normal functional role. Real time ultrasound in assessment and re-education of the hip abductors may be a valuable tool, while higher level exercise progressions should consider the importance of weightbearing stimulus and pelvic-femoral alignment for optimal muscle balance within the abductor synergy. |
