吸収性アンカーを使用した鏡視下バンカート修復術後のアンカー孔の拡大 : アンカー変更による変化

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We reported previously anchor hole enlargement after arthroscopic Bankart repair using bioabsorbable suture anchors. Subsequently, we have used a modified anchor. The changes of frequency by modifying the shape of anchor were investigated. 20 patients(18 males, 2 females) who underwent arthroscopic Bankart repair using Panalok suture anchors for anterior shoulder instability were examined(PA group). After October 2005, we have used Panalok loop anchors for arthroscopic Bankart repair. 34 patients (27 males, 7 females) using Panalok loop anchors were examined (LO group). Anchor hole enlargement was defined as high signal areas of anchor hole more than 1 slice on T2* weighted MR images after 3 months postoperatively. The numbers of enlarged anchor holes were compared between the 2 groups. The clinical results of the 2 groups were evaluated. In PA group, 62 anchors were used for surgery (mean; 3.1 anchors /patient). 3 cases of anchor hole enlargement were identified, and 5 anchor holes out of 62 (8.1%) showed enlargement. 2 of the 3 patients had instability at 3 months after surgery, but all of the patients had no instability at final follow-up (mean; 14 months). In LO group, 131 anchors were used for surgery (mean; 3.9 anchors /patient). Only 1 case of anchor hole enlargement was recognized, and 1 anchor hole out of 131 (0.76%) demonstrated enlargement. The rate of anchor hole enlargement of LO grope was fewer than PA. The patient had no instability over all periods of observation, and excellent clinical results at final follow-up (24 months). There is no difference of clinical results between PA and LO group. A secure fixation of capsulo-labrum complex on arthroscopic Bankart repair could prevent anchor hole enlargement.
2009-07-27

吸収性アンカーを使用した鏡視下バンカート修復術後のアンカー孔の拡大 : アンカー変更による変化

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