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Trauma

OPEN WEDGE HIGH TIBIAL OSTEOTOMY RESULTS FOR MEDIAL COMPARTMENT OSTEOARTHRITIS

Scottish Committee for Orthopaedics and Trauma (SCOT), February 2017 Meeting



Abstract

High tibial osteotomy (HTO) is a common procedure for treating medial compartment knee arthritis. The main goal is to reduce knee pain by transferring weight-bearing loads to the relatively unaffected lateral compartment and thus delaying the need of total knee replacement (TKR) by slowing or stopping destruction of medial compartment.

Between 2002 and 2010, 34 HTO's were carried out in 32 patients (Mean age 44.2). Results were reviewed in 23 patients with an average follow-up of 10.2 years (range 6–14 years). Oxford knee score (OKS) assessment was carried out on those patients. Of the remaining 11 patients, one was excluded, 2 were lost to follow-up, and 2 had died. Five cases had TKR at an average 8.8 years since having HTO.

OKS results revealed nine cases (39.1percnt;) scored (40–48) which indicate satisfactory joint function and don't require treatment. Three cases (13percnt;) scored (30–39) indicating mild to moderate arthritis. Six cases (26.1percnt;), scored (20–29) indicating moderate to severe arthritis. Five cases (21.8percnt;) scored (0–19) indicating severe arthritis.

Only five patients (14.7percnt;) had TKR (6–14) years after there HTO. The majority of cases had an OKS suggesting satisfactory joint function. Even those with scores suggesting moderate to severe arthritis were able to function normally for more than 6 years.

The successful outcome of HTO can be maintained for more than 6–16 years. We conclude that HTO should be recommended for the treatment of medial compartment arthritis of the knee in young and active patients for symptomatic improvement and maintenance of activity levels.


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