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To quantify the angle of movement, distance travelled, and center-of-gravity (CoG) shift in each body part, and clarify compensatory movements when patients with spastic diplegia perform a reach. [Participants and Methods] Seven patients with spastic diplegic cerebral palsy and 8 healthy adults performed a reach as a task to measure the time needed to reach, distance travelled, angle of movement, and CoG sway. [Results] The distances travelled forward by the lower trunk and pelvis were shorter, and those travelled by the upper limb and upper trunk were longer in patients with spastic diplegia compared with healthy adults. Furthermore, in the former group, the maximum amplitude of sway was smaller, and its velocity was slower in the anteroposterior direction. [Conclusion] As compensatory movements for reaching in patients with spastic diplegia, the degree of anterior pelvis tilt is reduced, and the shoulder girdle and upper limb with higher mobility are excessively moved forward. During these movements, the trunk is fixed by excessive upper trunk flexion and neck extension.

BACKGROUND: Shortening of tensor fasciae latae is one factor that causes a functional leg length discrepancy. A shoe lift has been used to correct the compensatory posture resulting from the discrepancy. Despite the potential therapeutic benefit of a shoe lift, the mechanism by which it exerts its effect is unclear. OBJECTIVE: To investigate the effect of a shoe lift on tensor fasciae latae length during standing with an artificial functional leg length discrepancy using ultrasonic shear wave elastography. METHODS: Twenty-two healthy individuals performed static standing under three conditions: drop of the pelvis and flexion of the leg resulting from fixing in the hip abduction position using a hip orthosis (functional leg length discrepancy condition); drop of the pelvis by the orthosis, but no flexion of the leg due to a shoe lift (shoe lift condition); and normal bilateral standing condition. The shear elastic modulus of tensor fasciae latae was calculated using ultrasonic shear wave elastography. RESULTS: The shear elastic modulus was significantly lower in the functional leg length discrepancy condition than in the shoe lift and normal conditions (p= 0.038). CONCLUSIONS: Using a shoe lift for the functional leg length discrepancy can result in a functional hip position that elongates tensor fasciae latae.