Postoperative Radiographic Outcomes Following Abduction-Extension Metacarpal Osteotomy: A Comparison between Early and Advanced Carpometacarpal Arthritis.

IF 0.5 Q4 SURGERY Journal of Hand Surgery-Asian-Pacific Volume Pub Date : 2024-10-01 Epub Date: 2024-08-27 DOI:10.1142/S2424835524500437
Ken Shirakawa
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Abstract

Background: This study aimed to investigate the effect of thumb metacarpal osteotomy on dorsal subluxation of the carpometacarpal (CMC) joint and compare the effects of early and advanced osteoarthritis (OA). Methods: We retrospectively reviewed 42 thumbs of 37 patients who underwent metacarpal osteotomy with a postoperative extension angle of 90° or more between January 2018 and October 2021 and were followed up for more than 2 years. The thumbs were classified into two groups: early OA (Eaton stage I or II) and advanced OA (Eaton stage III). We measured the reduction ratio, which was defined as the ratio of improvement in dorsal subluxation, at 3 months and 1 year postoperatively, and at the latest follow-up. We statistically compared the reduction ratio between the two groups and investigated the factors affecting the reduction ratio using correlation analysis. Results: The reduction ratio was significantly higher in the early OA group than in the advanced OA group at 3 months after surgery, whereas no significant difference was found between the two groups at 1 year after surgery and at the latest follow-up. A significant positive correlation was detected between the reduction ratio and the postoperative extension angle. Conclusions: First metacarpal osteotomy reduces dorsal subluxation in both early- and advanced-stage CMC OA. This procedure yields immediate marked reduction in early-stage OA, while improvement of the subluxation progressed gradually in advanced-stage OA. Level of Evidence: Level IV (Therapeutic).

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内收-外展掌骨截骨术后放射学结果:早期和晚期腕掌关节炎的比较。
研究背景本研究旨在探讨拇指掌骨截骨术对腕掌(CMC)关节背侧半脱位的影响,并比较早期和晚期骨关节炎(OA)的影响。研究方法我们回顾性回顾了2018年1月至2021年10月期间接受掌骨截骨术的37名患者的42个拇指,术后伸展角度达到或超过90°,并随访2年以上。这些拇指被分为两组:早期 OA(Eaton I 或 II 期)和晚期 OA(Eaton III 期)。我们在术后 3 个月、1 年和最近一次随访时测量了拇指背侧半脱位改善率。我们统计比较了两组患者的复位率,并使用相关分析法研究了影响复位率的因素。结果显示术后 3 个月时,早期 OA 组的缩窄比明显高于晚期 OA 组,而术后 1 年和最近一次随访时,两组间无明显差异。缩复比与术后伸展角度之间存在明显的正相关。结论第一掌骨截骨术可减少早期和晚期 CMC OA 背侧脱位。该手术可立即明显减轻早期 OA 的症状,而晚期 OA 的半脱位情况则会逐渐改善。证据等级:四级(治疗)。
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CiteScore
0.90
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304
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