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Open Meniscal Repair: Clinical and Magnetic Resonance Imaging Findings After Twelve Years

Thomas Muellner, MD^*,, Alexander Egkher, MD^*, Ajsa Nikolic^*, Martin Funovics, MD and Viktor Metz, MD

^* University Clinic of Traumatology, University of Vienna Medical School, Vienna, Austria
University Clinic of Radiodiagnostic, Surgical Division, University of Vienna Medical School, Vienna, Austria

Address correspondence and reprint requests to Thomas Muellner, MD, Universitaetsklinik für Unfallchirurgie, Waehringerguertel 18–20, A-1090 Wien, Austria

The purpose of this study was to document the long-term clinical, radiographic, and magnetic resonance imaging results after open meniscal repair. Twenty-two patients, with 23 open meniscal repairs, were evaluated after a mean follow-up of 12.9 years using patient history, physical examination, KT-1000 arthrometer testing, the "Orthopaedische Arbeitsgemeinschaft Knie" knee evaluation scheme, Tegner activity score, weightbearing radiographs, and magnetic resonance imaging. Two of the 22 patients had retears and both occurred in unstable knees. Radiographs revealed no degenerative changes in 17 of the 23 compartments. Grade III and IV signal alterations were present on magnetic resonance imaging scans in more than 50% of the repaired menisci. We concluded that the long-term survival rate of repaired menisci was 91%, and that magnetic resonance imaging is unsuitable for diagnosis of the healing process of a repaired meniscus.

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