Givon U, Schindler A, Ganel A
Pediatric Orthopaedic Unit, Sheba Medical Center, Tel Hashomer, Israel.
J Pediatr Orthop. 2001 Mar-Apr;21(2):238-41.
Hemichondrodiastasis has been reported for treatment of angular deformities in children close to skeletal maturity. The use of distraction through the physis in younger children was not recommended. The authors report three children 3 to 7 years of age who underwent bilateral proximal tibial hemichondrodiastasis for correction of genu varum due to bone dysplasia. Ilizarov external fixators were applied in all cases. The patients underwent gradual angular correction at a rate of 0.5 mm/d. Distraction was continued until a normal mechanical axis was achieved. Normal alignment was achieved in two patients and slight overcorrection in the third. The patients were followed for 3 to 11 years, and no adverse affects on the physis were identified. This is the first report of physeal distraction in patients this young. Our results are good, and we believe that hemichondrodiastasis can be safely used for correction of angular deformities in young children.
半骨骺撑开术已被报道用于治疗接近骨骼成熟的儿童的角状畸形。不建议在年幼儿童中通过骨骺进行撑开。作者报告了三名3至7岁的儿童，他们因骨发育异常接受了双侧胫骨近端半骨骺撑开术以矫正膝内翻。所有病例均应用了Ilizarov外固定架。患者以每天0.5毫米的速度进行逐渐的角状矫正。撑开持续进行直至获得正常的机械轴。两名患者实现了正常对线，第三名患者出现了轻微的过度矫正。对患者进行了3至11年的随访，未发现对骨骺有不良影响。这是关于如此年幼患者进行骨骺撑开的首次报告。我们的结果良好，并且我们认为半骨骺撑开术可安全用于矫正幼儿的角状畸形。
