Arthroscopic osteocapsular arthroplasty for advanced-stage primary osteoarthritis of the elbow using a computed tomography-based classification

초록

worse clinical and radiologic outcomes compared with stage I or II according to computed tomography (CT)-based classification. Methods: Clinical and radiologic outcomes in 65 patients treated with arthroscopic osteocapsular arthroplasty were retrospectively analyzed for range of motion (ROM) arc, functional score (Mayo Elbow Performance Score [MEPS]), and pain score (visual analog scale [VAS]). Patients were classified into stage I or II (n = 44) and stage III (n = 21) groups according to CT-based classification, and postoperative clinical outcomes and complications were analyzed. Results: Mean follow-up duration was 32.9 +/- 13.7 months (range, 24-69). The average patient age was 52 +/- 10 years (range, 40-63). Improvements from preoperative to final follow-up were seen in the overall ROM-flexion from 94 degrees +/- 19 degrees to 129 degrees +/- 14 degrees (P <.01), ROM-extension from 25 degrees +/- 12 degrees to 14 degrees +/- 7 degrees (P <.01), MEPS from 45 +/- 13 to 78 +/- 14 (P <.01), and VAS score from 6.3 +/- 1.6 to 3.1 +/- 1.4 (P <.01). Subgroup analysis using the CT-based classification revealed that stage III led to worsened VAS score and MEPS than stage I or II. Conclusions: Arthroscopic osteocapsular arthroplasty can be recommended for its favorable overall treatment outcomes for elbow osteoarthritis. However, stage III shows worse clinical and radiologic outcomes compared with stage I or II according to CT-based classification. (C) 2019 Journal of Shoulder and Elbow Surgery Board of Trustees. All rights reserved.

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