Hip strength and lower limb, pelvis, and trunk kinematics
Weak hip musculature and altered kinematics during weight-bearing tasks are common clinical findings amongst those with lower extremity musculoskeletal disorders. Nevertheless, it remains unclear the association hip strength and kinematics with pathology and/or pain. To goal of the current study was to compare peak lower limb, pelvis, and trunk kinematics and inter-joint and inter-segmental coordination in women with strong and weak hip muscle performance.
10 young healthy women matched the criteria for the ‘strong’ group based on peak hip extensor and abductor torque, whilst 9 were categorised to the ‘weak’ group. Kinematics were recorded during the stance phase of walking and rate-controlled hopping at the hip, knee, pelvis and trunk.
No group differences were noted in peak torque kinematics at any joint. However, the weak group demonstrated greater trunk lateral flexion during the stance limb during hopping. These findings suggest that poor hip muscle performance does not affect peak hip and knee joint kinematics in the absence of pain or pathology. However, differences in lower limb and trunk coordination during weight-bearing dynamic tasks differed significantly. > From: Armour Smith et al., J Orthop Sports Phys Ther (2014) (Epub ahead of print). All rights reserved to Journal of Orthopaedic & Sports Physical Therapy.