先天性胫骨长度缺损(胫侧半肢畸形)是一种罕见的先天性异常,典型的有胫骨缺如或缺损,腓骨相对完整.这种独特的异常常伴有膝关节不稳定,肢体缩短,足的位置严重畸形,足跟呈内翻直线位.常有足的长度缺损.胫骨长度缺损应与腓骨长度缺损(腓侧半肢畸形)相鉴别.腓侧半肢畸形是腓骨的长度缺损或缺如,足的外半常有缺损;胫骨的远端生长有缺损,胫骨向前呈弓形.1961～1983年,作者检查或治疗了66名(83个肢体)胫侧半肢畸形的病人,随访了其中57名病人(71个肢体)的长期结局,有14名病人为双侧损害.作者回顾性地将71个肢体分成各放射学亚型.Ia型:胫骨完全缺如,股骨远侧端发育不全.Ib型:有 Congenital loss of tibial length (tibial hemivertebra malformation) is a rare congenital anomaly, typically with absence or absence of the tibia and relatively complete fibula, a unique anomaly often associated with unstable knee, shortened limbs, Foot position deformity, the heel was inverted straight position. Often the length of the defect. Tibial length defects should be fibular length defects (fibular half-limb deformity) phase identification .Fibular half-limb deformity is the length of the fibula defect or In the absence of the external half of the foot, there was often a defect in the outer half of the foot, defects in the distal growth of the tibia and arching of the tibia forward.1961-1983 The authors examined or treated 66 patients (83 limbs) with tibial hemivertebra malformations, Of the 57 patients (71 limbs) who were followed for a long-term outcome of 14 patients with bilateral lesions, the authors retrospectively segmented 71 limbs into radiologic subtypes. Type Ia: complete absence of the tibia, distal femur End hypoplasia. Ib type: Yes