PDF(Pubmed)
Abstract：
BACKGROUND Unicameral bone cysts (UBCs) are benign tumor-like lesions that are the most common cause of pathological proximal femur fracture in children. This study aimed to present the outcomes of acute, unstable, pathological proximal femur fractures secondary to UBCs in children. MATERIAL AND METHODS We retrospectively reviewed data on 12 patients with a mean age of 9.3 years (7-12 years) who were initially treated with decompression and grafting, followed by stabilization using a 120° fixed-angle low-contact locking pediatric plate (LCLPP). The Musculoskeletal Tumor Society (MSTS) scores, Capanna classification of cyst repair, time to union, collodiaphyseal angle (CDA), and limb length discrepancy (LLD) were evaluated. RESULTS The mean follow-up was 33.1 months (range, 13-96 months). The mean union time was 9.5 weeks (8-14 weeks). The mean time for reparation of the cyst was 6.9 months (range 3-9 months). Four patients had Dormans type IB, while the remaining had type IIB fractures. According to the Capanna classification, repairs in 10 cases were grade I and in 2 cases grade II. At the last follow-up, the mean 120.8° of preoperative CDA was corrected to 140.9° (P<0.001) and there was no difference compared to the healthy side (P=0.214). The mean postoperative MSTS score was 97.1% (29.1 points). Two patients experienced LLD at the affected extremities, while the other 10 patients healed without any complications. CONCLUSIONS Fixation of acute unstable fractures secondary to UBCs with a 120° fixed-angle LCLPP is a reliable and successful option after decompression and grafting of the lesion.
摘要：
背景技术单房骨囊肿(UBC)是良性肿瘤样病变,是儿童病理性股骨近端骨折的最常见原因。这项研究旨在呈现急性，不稳定,病理性股骨近端骨折继发于儿童UBC。材料与方法我们回顾性分析了12例患者的资料，这些患者的平均年龄为9.3岁（7-12岁），最初接受减压和移植治疗。然后使用120°固定角度低接触锁定儿科钢板（LCLPP）进行稳定。肌肉骨骼肿瘤协会（MSTS）评分，Capanna囊肿修复分类，工会的时间，干胶角（CDA），并评估了肢体长度差异（LLD）。结果平均随访33.1个月(范围,13-96个月）。平均愈合时间为9.5周（8-14周）。平均囊肿修复时间为6.9个月（范围3-9个月）。四名患者患有DormansIB型，其余为IIB型骨折。根据Capanna的分类,修复10例为一级，2例为二级。在最后一次随访中，术前CDA的平均120.8°校正为140.9°(P<0.001),与健康侧相比无差异(P=0.214).术后平均MSTS评分为97.1%(29.1分)。两名患者在受影响的四肢出现LLD，其他10例患者均无并发症痊愈。结论120°固定角度LCLPP固定UBC继发急性不稳定骨折是减压和移植病灶后可靠和成功的选择。
