Aprin H
Department of Orthopaedic Surgery, Long Island Jewish Medical Center, New Hyde Park, NY.
Clin Orthop Relat Res. 1994 Dec(309):222-9.
Nine patients underwent femoral lengthening by callus distraction with cortical apposition (Z-osteotomy). The average amount of lengthening was 4.8 cm (range, 2.9-6.0 cm). The average time of external fixator use was 70 days (range, 33-100 days). The average time for using the cast brace was 3.5 months. All patients had complete union. No patient required bone grafting. No patient had premature consolidation of the osteotomy. Complications included cellulitis around the pins in 2 patients, transient peroneal nerve palsy in 1 patient, and fracture after removal of external fixator in 2 patients. In this procedure the alignment and rotation is controlled by a strong external fixating device. The large area of cortical contact after z-osteotomy assists in rapid union of the distracted bone.
9例患者采用骨痂牵张结合皮质骨对合（Z形截骨术）进行股骨延长。平均延长量为4.8厘米（范围2.9 - 6.0厘米）。外固定器平均使用时间为70天（范围33 - 100天）。使用管型支具的平均时间为3.5个月。所有患者均实现完全愈合。无患者需要植骨。无患者发生截骨部位过早骨愈合。并发症包括2例患者针道周围蜂窝织炎、1例患者短暂性腓总神经麻痹以及2例患者外固定器拆除后骨折。在此手术中，对线和旋转由坚固的外固定装置控制。Z形截骨术后大面积的皮质骨接触有助于牵张骨的快速愈合。
