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. 2023 May 22;11(5):23259671231162398.
doi: 10.1177/23259671231162398. eCollection 2023 May.

Serial Changes in Clinical Outcomes After Arthroscopic Osteocapsular Arthroplasty for Primary Elbow Osteoarthritis: A Medium-term Follow-up Study

Sang-Pil So  1 , Jae-Man Kwak  2 , Jun-Bum Lee  1 , Hui Ben  1 , Keun Ho Kim  1 , Kyoung-Hwan Koh  1 , In-Ho Jeon  1
Affiliations

Serial Changes in Clinical Outcomes After Arthroscopic Osteocapsular Arthroplasty for Primary Elbow Osteoarthritis: A Medium-term Follow-up Study

Sang-Pil So et al. Orthop J Sports Med. .

Abstract

Background: Arthroscopic osteocapsular arthroplasty (OCA) shows promising short-term outcomes for primary elbow osteoarthritis (OA). However, serial changes in clinical outcomes for medium-term follow-up are not well known.

Purpose: To evaluate clinical outcomes after arthroscopic OCA in primary elbow OA from preoperative to short- and medium-term follow-up and to analyze the correlation between the time from short- to medium-term follow-up and the changes in clinical outcomes between the periods.

Study design: Case series; Level of evidence, 4.

Methods: Patients with primary elbow OA who were treated with arthroscopic OCA between January 2010 and April 2020 were evaluated. Elbow range of motion (ROM), visual analog scale (VAS) for pain, and Mayo Elbow Performance Score (MEPS) were assessed preoperatively and at short-term (3-12 months) and medium-term (≥2 years) follow-up. The correlation between the time from short- to medium-term follow-up and the changes in clinical outcomes was analyzed using the Pearson correlation coefficient.

Results: Included were 56 patients who underwent short-term follow-up (mean [range], 5.9 [3-12] months) and medium-term follow-up (62.2 [24-129] months) after arthroscopic OCA. When compared with preoperative values, significant improvements were seen at short-term follow-up: ROM (from 89.4° to 111.7°; P < .001), VAS for pain (from 4.9 to 2.0; P < .001), and MEPS (from 62.3 to 83.7; P < .001). From short- to medium-term follow-up, ROM decreased (from 111.7° to 105.4°; P = .001) while VAS for pain (from 2.0 to 1.4; P = .031) and MEPS (from 83.7 to 87.8; P = .016) improved. All outcomes improved significantly at medium-term follow-up as compared with preoperative values (P < .001 for all). The time between short- and medium-term follow-up had a significant positive correlation with decreased ROM (r = 0.290; P = .030) and a significant negative correlation with improvement in MEPS (r = -0.274; P = .041).

Conclusion: Serial assessment of patients with primary elbow OA who underwent arthroscopic OCA showed that the clinical outcomes improved from preoperative assessment to short- and medium-term follow-up, although ROM decreased between short- and medium-term follow-up. VAS for pain and MEPS showed continued improvement until medium-term follow-up.

Keywords: arthroscopy; elbow arthrolysis; elbow osteoarthritis; osteocapsular arthroplasty.

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Conflict of interest statement

The authors declared that there are no conflicts of interest in the authorship and publication of this contribution. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto.

Figures

Figure 1.
Figure 1.
Serial assessment of (A) ROM, (B) VAS pain, and (C) MEPS at the preoperative, short-term follow-up, and medium-term follow-up evaluations. The Xs represent the means, the horizontal lines represent the medians, the boxes represent interquartile ranges, and the whiskers represent maximum and minimum values. ROM, range of motion; VAS, visual analog scale; MEPS, Mayo Elbow Performance Score. *P < .05.
Figure 2.
Figure 2.
Correlation between time from short- to medium-term follow-up and changes in clinical outcomes according to (A) ROM subtraction, (B) ROM ratio, (C) VAS pain, and (D) MEPS. ROM, range of motion; VAS, visual analog scale; MEPS, Mayo Elbow Performance Score. *P < .05.
Figure 3.
Figure 3.
Kaplan-Meier survival curve for revision-free survival after primary arthroscopic OCA in patients with primary elbow OA.
See this image and copyright information in PMC

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