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Postarthroscopic osteonecrosis of the knee: A case report and literature review

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Post-arthroscopic osteonecrosis is a rare complication of arthroscopic surgery. The present study reported on a case of knee osteonecrosis after arthroscopic surgery. The patient, an 81yearold male, presented with left knee pain and limited range of motion without any history of trauma. MRI revealed medial meniscus tear. Medial partial meniscectomy was performed using arthroscopy. The pain was found to be relieved due to the operation. However, there was an aggravation of pain after two months postoperatively. Xray revealed that the subchondral bone in the medial femoral condyle (MFC) had collapsed. MRI revealed a large area of bone marrow edema in the MFC with cartilage delamination and subchondral flattening. Considering the age of the patient and the large area of bone necrosis, total knee arthroplasty was performed. At the 1year followup, the Knee Society Knee Score improved from 44 points preoperatively to 90 points and the Knee Society Functional Score was elevated from 35 to 90 points. Patientreported outcome measures were assessed in the form of the Oxford Knee Score, which was 16. Furthermore, previous case reports of postarthroscopic osteonecrosis were reviewed and the clinical and radiographic features, as well as the treatment, were summarized. If the patient complains of persistent and worsening pain after arthroscopy, particularly in elderly osteoporotic patients with meniscal tears or chondral lesions, the possibility of postarthroscopic knee osteonecrosis should be considered. Diagnosis and treatment at the early stages are likely to be beneficial for the outcome.
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Document Type: Research Article

Affiliations: 1: Department of Joint Surgery and Orthopedic Trauma, The Third Affiliated Hospital of Sun Yatsen University, Guangzhou, Guangdong 510630, P.R. China 2: Department of Spine Surgery, The Third Affiliated Hospital of Sun Yatsen University, Guangzhou, Guangdong 510630, P.R. China 3: Department of Laboratory Medicine, The Third Affiliated Hospital of Sun Yatsen University, Guangzhou, Guangdong 510630, P.R. China

Publication date: October 1, 2020

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  • Experimental and Therapeutic Medicine aims to ensure the expedient publication, in both print and electronic format, of studies relating to biology, gene therapy, infectious disease, microbiology, molecular cardiology and molecular surgery. The journal welcomes studies pertaining to all aspects of molecular medicine, and studies relating to in vitro or in vivo experimental model systems relevant to the mechanisms of disease are also included.

    All materials submitted to this journal undergo the appropriate review via referees who are experts in this field. All materials submitted follow international guidelines with regard to approval of experiments on humans and animals.
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