エクリス肩人工骨頭置換術の経験 : : コンポーネント設置の妥当性について

概要

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We investigated the validity of the implantation of the humeral component of the Aequalis shoulder system. Eight patients (9 shoulders) were treated with the Aequalis shoulder system (humeral head replacement with cement). The mean age at the surgery was 52 years old, and the mean follow-up period was 5 months. Patients with rheumatoid arthritis were found in 6 shoulders, osteoarthrosis in 1, and osteonecrosis in 2. The JOA shoulder score was used for the short-term clinical outcome. The radiographic evaluation was considered pre and post-operatively about as follows : alignment of the stem post-operatively (varus/valgus tilt), inclination angle of the proximal humerus, retrotorsion of the humeral head, and posterior offset of the outer head. The mean JOA shoulder score was improved (especially in the pain score). There was no case of varus position of the stem. The difference of the mean inclination angle between pre and postoperation was 5 degrees. The difference of the mean retrotorsion angle between pre and postoperation was 4 degrees. There was no but one case with a protruded outerhead from the osteotomied surface of the humeral neck. The clinical outcome of the humeral head replacement with Aequalis shoulder system resulted in good during a short period. The alignment of the prosthesis was acquired almost precisely.
日本肩関節学会の論文