Evaluation of gait performance of a participant with Perthes disease while walking with and without a Scottish-Rite orthosis

Background: Scottish-Rite orthosis is one of the conservative methods used to treat Legg-Calve-Perthes disease. As there was not enough evidence to show the effects of using this orthosis on reducing the loads applied on the limb, this research aimed to find the influence of this orthosis. Case Description and Methods: A participant with Perthes disease on the left hip joint was recruited into this study to walk with and without the orthosis. The kinetic and kinematic parameters were collected by a motion analysis system and a Kistler force platform. Findings and Outcomes: No significant differences were noted between the hip joint flexion/extension range of motion and the moments between the sound side and the side affected by Legg-Calve-Perthes disease. It may be concluded that use of orthosis may not have any positive effects to decrease the loads or to improve the alignment of the hip joint in participants with Perthes disease, as expected. Conclusions: The use of Scottish-Rite orthosis not only does not improve the containment of the hip joint, but also does not have any significant influence on loads applied on the joint during walking of the subject with Perthes disease.