修復腱板の初期機械特性の検討 : immediate repair と delayed repair の比較(第2報)

元データ 2002-01-01 日本肩関節学会

概要

We assessed the initial mechanical properties of repaired infraspinatus tendons after immediate and delayed repairs using #2 sutures. Fifteen shoulders were harvested from 8 beagle dogs, and were divided into two repair groups. Immediate repair group (group I) (n=8) : the insertion of the infraspinatus tendon was detached from the greater tuberosity and then sutured to the bone trough with 4-strand sutures (#2 Ethibond). Delayed repair group (group D) (n=7) : the insertion of infraspinatus tendon was detached from the greater tuberosity and retracted proximally. Five weeks later, the shoulders were harvested and the tendons were repaired in the same way as the immediate repair group. The ultimate strength and stiffness of each tendon was measured with a force transducer, and the pattern of the tendon disruption was also determined. The data were analyzed by one-way ANOVA and P <0.05 was regarded as statistically significant.The average ultimate tendon strength was 155.7±35.7 (S.D.) N in group I and 170.7±53.6 (S.D.) N in group D, with no significant difference between the two groups (p=0.528). The average tendon stiffness was 18.5±12.8 (S.D.) KN/m in group I and 13.8±5.6 (S.D.) KN/m in group D, with no significant difference between the two groups (p=0.380). In group I, the tendon ruptured in 6 shoulders and suture loops in the tendon moved distally during traction in 2 shoulders. In group D, the tendon ruptured in 6 shoulders and the bone avulsed at the greater tuberosity in one shoulder. There was no difference in the initial mechanical properties between the immediate and delayed repair tendons after surgery using #2 sutures. A repaired rotator cuff tendon end at 5 weeks after detachment is expected to have clinically enough strength.

著者

青木 光広 札幌医科大学保健医療学部理学療法学科
石井 清一 札幌医科大学整形外科
岡村 健司 札幌医科大学 整形外科
岡村 健司 札幌医科大学整形外科
青木 光広 札幌第一病院整形外科
石井 清一 北海道手の外科・スポーツ医学研究所 東北海道病院
石井 清一 札幌医科大学医学部整形外科学教室
石井 清一 札幌医科大学
石井 清一 浦河赤十字病院 整形外科
瀧内 敏朗 西岡第一病院 整形外科
瀧内 敏朗 札幌医科大学整形外科
加賀谷 圭子 札幌医大整形外科
瀧内 敏郎 札幌医科大学 整形外科
加賀谷 圭子 旭川厚生病院整形外科
瀧内 敏郎 札幌スポーツクリニック
瀧内 敏朗 釧路赤十字病院
瀧内 敏朗 札幌医科大学 リハ
瀧内 敏朗 札幌医科大学 整形外科
石井 清一 Department Of Orthopedic Surgery Sapporo Medical University School Of Medicine
石井 清一 札幌医大整形外科
青木 光広 札幌医科大

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