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. 2022 Jul 21:2022:7266233.
doi: 10.1155/2022/7266233. eCollection 2022.

Clinical Outcomes of Repair of Complete Detachment of Medial Collateral Ligament at the Tibial Insertion in Bilateral Total Knee Arthroplasty

Cheng Jin  1 , Eun-Kyoo Song  2 , Quan-He Jin  3 , Jong-Keun Seon  2 , Si-Mei Sun  1
Affiliations

Clinical Outcomes of Repair of Complete Detachment of Medial Collateral Ligament at the Tibial Insertion in Bilateral Total Knee Arthroplasty

Cheng Jin et al. Evid Based Complement Alternat Med. .

Abstract

Purpose: Complete detachment of the medial collateral ligament (MCL) may occur during medial release of total knee arthroplasty (TKA) in patients with severe varus knee osteoarthritis. This study was to determine functional and stability outcomes of repaired knee with complete detachment of MCL compared to those of contralateral nondetached MCL in patients with bilateral TKA.

Methods: Records of 1052 consecutive knees undergoing bilateral TKA from 2003 to 2015 were retrospectively reviewed. Of which, 45 patients were repaired for complete MCL detachment injury (2.1%) at tibial insertion in one side (repaired group). MCL was not detached in the contralateral side (control group). Clinical evaluation was performed preoperatively and at the final follow-up using KS and WOMAC scores between two groups. Similarly, stability was compared on a valgus stress radiograph between two groups.

Results: Two patients had insufficient data. Hence, 43 patients were included after a minimum of 5 years follow-up. There were no significant differences in terms of alignment and clinical outcomes between the two groups either preoperatively or at the final follow-up (p > 0.05). Radiographic stability also showed no differences between repaired and control groups in extension and 30° of flexion (p=0.208 and p=0.125).

Conclusions: For tibial detachment of the MCL during TKA, repair with suture anchor provided good clinical and stability results, similar to TKA without MCL injury. Therefore, repair with a suture anchor is a reliable method that provides good clinical and stability outcomes in patients with MCL injury during TKA.

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Conflict of interest statement

The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Figure 1
Figure 1
Flow chart of subjects in the retrospective study.
Figure 2
Figure 2
(a) Postoperative teleroentgenography. (b) Valgus stress radiographs of right knee extension; (c) Valgus stress radiographs of left knee extension.
Figure 3
Figure 3
(a) Opening in 30° of knee flexion under valgus stress test (b) Detatchment injury of MCL from tibial attachment site; (c) MCL repositioned to tibial site and fixed with suture anchor.
See this image and copyright information in PMC

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