Lateral meniscus extrusion on preoperative MRI and its impact upon mid-term clinical outcomes following mobile-bearing unicompartmental knee arthroplasty.

Autor: Fukai Y; Department of Orthopaedic Surgery and Joint Surgery Centre, Takatsuki, General Hospital, 1-3-13, Kosobe-Cho, Takatsuki, Osaka, 561-1115, Japan., Hiranaka T; Department of Orthopaedic Surgery and Joint Surgery Centre, Takatsuki, General Hospital, 1-3-13, Kosobe-Cho, Takatsuki, Osaka, 561-1115, Japan., Koide M; Department of Orthopaedic Surgery and Joint Surgery Centre, Takatsuki, General Hospital, 1-3-13, Kosobe-Cho, Takatsuki, Osaka, 561-1115, Japan., Fujishiro T; Department of Orthopaedic Surgery and Joint Surgery Centre, Takatsuki, General Hospital, 1-3-13, Kosobe-Cho, Takatsuki, Osaka, 561-1115, Japan., Okamoto K; Department of Orthopaedic Surgery and Joint Surgery Centre, Takatsuki, General Hospital, 1-3-13, Kosobe-Cho, Takatsuki, Osaka, 561-1115, Japan.
Jazyk: angličtina
Zdroj: Journal of orthopaedics [J Orthop] 2024 Dec 01; Vol. 65, pp. 15-19. Date of Electronic Publication: 2024 Dec 01 (Print Publication: 2025).
DOI: 10.1016/j.jor.2024.11.026
Abstrakt: Background: The presence of full-thickness cartilage in the lateral compartment on valgus stress radiography is a criterion for medial mobile-bearing unicompartmental knee arthroplasty (UKA). However, the appropriateness of medial UKA is uncertain when preoperative MRI shows extrusion of the lateral meniscus. We therefore assessed how preoperative MRI-detected lateral meniscus extrusion affects mid-term functional outcomes after mobile-bearing UKA.
Methods: We retrospectively reviewed the records of our patients that underwent mobile-bearing medial UKA between January 2017 and December 2019. Crema's classification system was used to assess MRI of the lateral meniscus, categorizing patients as either grade 0 or ≥ grade 1. We preoperatively evaluated patient-reported outcomes using the Oxford knee score and Knee Society functional score, and then again at the latest follow-up. We also measured range of motion pre- and postoperatively. We compared preoperative individual data with outcome data obtained for at least three years.
Results: The lateral meniscus extrusion group included 19 knees, and the remainder included 98 knees. Clinical outcomes were similar between these groups ( p  > 0.05). No progression of lateral arthritis was observed in either group during the follow-up period.
Conclusion: Excluding UKA as an option for cases with lateral meniscus extrusion findings on preoperative MRI may require reconsideration.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 Published by Elsevier B.V. on behalf of Professor P K Surendran Memorial Education Foundation.)
Databáze: MEDLINE
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