JuggerKnot anchor ^TM を用いた関節鏡下関節唇形成術後の骨孔の早期拡大

抄録

Background: JuggerKnot anchor^TM is a new unique suture anchor and the drill hole for anchor is small (1.4mm). However, some shoulders showed enlargement of anchor holes in radiographs taken postoperatively. The purpose of the present study was to radiographicallay evaluate the enlargement of anchor holes after the use of JuggerKnot^TM anchors for arthroscopic capsulolabral repair in traumatic shoulder instability.
Methods: 37 shoulders (28 males and 9 females, average age: 22) who underwent arthroscopic capsulolabral repair using JuggerKnot anchors^TM for traumatic anterior shoulder instability were included in this study. Anchor holes identified in radiographs taken at 3 to 4 months postoperatively were defined as "enlarged" or as "nonenlarged". To assess the site of enlarged anchor holes, we defined the anchor holes from 12 to 3 o'clock as "upper anchor holes" and from 3 through 4:30 as "lower anchor holes" in the right shoulder.
Results: Enlargement of anchor holes was noted in 12 shoulders (6 males (17%) and 6 females (66%)) from radiographs taken at 3 to 4 moths postoperatively. Enlargement of anchor holes was noted in 32 out of 190 total anchor holes (16%), 22 out of 106 upper anchor holes (21%) and 10 out of 84 (12%) lower anchor holes.
Conclusion: Enlargement of anchor holes was noted 16% of total anchor holes from radiographs taken on 3 to 4 moths postoperatively. Further investigation is needed to elucidate this topic because anchor hole enlargement could represent the possibility of anchor loosening and recurrence of instability.