Lateral Unicompartmental Knee Arthroplasty for a Secondary Osteonecrosis of the Lateral Femoral Condyle. A Case Report

Overview

Journal BMC Musculoskelet Disord

Publisher Biomed Central

Specialties Orthopedics
Physiology

Date 2020 Sep 2

PMID 32867743

Citations 1

Authors

Tao Yang

Huaming Xue

Tong Ma

Tao Wen

Long Xue

Mengyin Guan

Yihui Tu

Affiliations

Soon will be listed here.

Abstract

Background: Secondary osteonecrosis of the knee is a rare event. There are few reports regarding management of this condition. The aim of the present study is to report treatment outcomes for secondary osteonecrosis of the lateral condyle treated with unicompartmental knee arthroplasty (UKA).

Case Presentation: A 54-year-old woman with idiopathic thrombocytopenic purpura, who received low-dosage corticosteroids, complained of knee pain for 5 years and difficulty walking in the last 5 months. Fixed-bearing lateral UKA was performed under general anesthesia combined with midthigh saphenous nerve block. The patient could walk without ambulation aid shortly after the operation and achieved satisfactory knee joint function at the 6-week follow-up. The knee society score (KSS) increased from 68 to 91. The follow-up period was up to 1 year. There was no pain, loosening, or fracture of the prosthesis at the latest follow-up.

Conclusions: This case study demonstrates successful management of secondary osteonecrosis of the lateral femoral condyle is possible with a fixed bearing lateral UKA. Early diagnosis, rigorous indication, and appropriate surgical techniques were critical to maximizing prosthesis stability in lateral UKA.

Citing Articles

Treatment options for secondary osteonecrosis of the knee.

Zmerly H, Moscato M, Akkawi I, Galletti R, Di Gregori V Orthop Rev (Pavia). 2022; 14(3):33639.

PMID: 35775038 PMC: 9239350. DOI: 10.52965/001c.33639.

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