半肢骨骺发育异常是一种很少见的肿瘤样骨发育异常,通常好发于下肢,尤其是股骨、胫骨远端骨骺和距骨。本文报告3例,其中2例分别位于髋臼骨骺和胫骨近端前结节骨骺,实属罕见;另1例,虽见于好发部位(胫骨远端),但同时患有纤维性骨缺损,亦未见有报告。本病的诊断主要靠X线检查。其特征性的X线表现是:一侧骨骺软骨的内或外半侧过度增生和骨化中心的早出现,并且常呈多中心性骨化或钙化,最终多融合为一体而形成骨骺的偏侧肥大。主要临床表现是关节附近的无痛性肿块和轻微的膝(或踝)外(内)翻畸形。还讨论了纤维性骨缺损的有关问题。 Abnormal development of the epiphysis of the limbs is a rare tumor-like bone dysplasia. It usually occurs in the lower extremities, especially the femur, the distal tibia and the talus. This article reports 3 cases, 2 of which are located in the acetabular iliac crest and the proximal humerus anterior bone nodule, it is rare; the other case, although found in the predileous site (distal humerus), but also suffering from fibrous bone defects, No report was found. The diagnosis of this disease depends mainly on X-ray examination. Its characteristic X-ray findings are: hyperplasia of the inner or outer half of the cartilage of one side and early appearance of the ossification center, and often show multi-centralized ossification or calcification, eventually becoming more integrated and forming the epiphysis. Side hypertrophy. The main clinical manifestations are painless masses near the joints and minor knee (or ankle) external (introversion) malformations. The issues related to fibrous bone defects are also discussed.