Measurement of the muscle length and range of motion were carried out on three modified human cadavers. Wires were utilized to simulate the dissected QF and OE. Lengths were recorded every fifteen degrees with and without end range abduction, adduction and rotation.
Rehabilitation programs are often designed around the precise understanding of the stretch and strengthening of specific muscles. Considering the lack of consensus regarding QF and OE the present study will help clarify a knowledge gap regarding their clinical anatomy. The QF was shown to be lengthened maximally in flexion, adduction or abduction and internal rotation. Force was shown to be optimally generated in 60-90 degrees of flexion. The OE showed maximal length in extension, abduction and internal rotation with the largest moment generated with the hips in a neutral position.
> From: Vaarbakken et al., Clin Biomech 30 (2016-01-04 11:41:36) 231-237 (Epub ahead of print). All rights reserved to Elsevier Ltd.. Click here for the online summary. Translation by Eric Walper
