Wolter clavicular plate 固定による肩鎖関節の可動性について : 屍体を用いた研究

概要

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Several postoperative complications, such as an acromial fracture and a joint contracture have been reported following a fixation by Wolter clavicular plate. The purpose of this study is to analyze the motion of acromioclavicular joint (ACJ) after the fixation by Wolter clavicular plate. In this study, five shoulders from three cadavers were used. Three models, which were control (without a fixation), dislocation (acromioclavicular ligament and coraoclavicular ligament were released), and fixation (fixed with Wolter clavicular plate) were established. The movements of the acromion relative to the distal clavicle were measured and expressed as changes in angle on the sagittal plane (SA) and horizontal plane (HA) at 45° and 120° flexion or 45° and 120° abduction. In the control model, the mean values of SA and HA at 120° flexion were 18.2° and 11.5° and SA and HA at 120° abduction were 11.2° and 9°, respectively. In the dislocation model, the motion of ACJ increased in flexion compared with the control model. On the other hand, in the fixation model, SA and HA at 120° flexion were 5.4° and 5.8° and SA and HA at 120° abduction were 9.8° and 3.6° indicating decrease in motion of ACJ compared with the control model. This study indicated that a fixation by Wolter clavicular plate restricted the motion of acromioclavicular joint.
日本肩関節学会の論文
2002-01-01