Exostosis in the Hand: Case Series and Literature Review

IntroductionThis study reviews the exostosis in hand in our locality and compares those in the literature.MethodsA retrospective study was conducted by reviewing the cases collected from 2000 to 2010. Literatures were also reviewed to look into the current concept of exostosis in the hand.ResultsThere were nine patients with a total of 11 lesions of exostosis in the hand. Two cases were parosteal osteochondroma (Nora lesion). The male to female ratio was 4:5. The average presented age at the first consultation was 49.7 years of age. The most common site was distal phalanx. Six lesions had incorrect preoperative diagnoses by clinical assessment and standard two-view radiographs of the hand. Three of the six lesions were corrected after intraoperative Xi-scan screening.ConclusionThe clinical picture of exostosis in the hand in our locality seems to be different from that of Western countries. Lesions of the hand were difficult to be visualized in the radiographs due to overlapping of bones. Xi-scan may help in making the diagnosis.

中文摘要簡介 : 本研究回顧手部外生骨疣的病例，並與文獻記載作出比較。方法 : 我們做了一個回顧性的研究，收集了本醫院在2000至2010年間處理的手部外生骨疣的病例。並且翻閱了文獻，從而了解現時醫學界對手部外生骨疣的概念。結果 : 共9位病人的手部發現有11個外生骨疣的病例，當中兩個是骨膜外骨軟骨瘤;。男女的比例為4比5。首次求診的平均年齡為49.7歲。最常見的部位是在末指節骨。經過臨床和手部標準X光評估，有6個錯誤的術前診斷。其中三個診斷可在手術中Xi-掃描檢查後得到更正。結論 : 本地區的手部外生骨疣在之臨床情況似乎與西方國家不同。由於骨骼在X光片中重疊，手部的病變有時難以看清。Xi-掃描可能有助其診斷。