广泛微孔涂层非骨水泥假体治疗Vancouver B2型假体周围骨折

目的 评价广泛微孔涂层非骨水泥长柄假体治疗Vancouver B2型股骨假体周围骨折的疗效.方法 2002年10月至2007年5月对10例初次全髋置换术后Vancouver B2型假体周围骨折患者采用广泛微孔涂层非骨水泥长柄假体予以翻修,其中初次置换股骨柄为骨水泥固定者4例,非骨水泥固定6例.结果 10例患者均获随访,平均随访时间44个月(12～67个月),Harris评分平均为87.6分.所有患者骨折均愈合,骨折平均愈合时间4.6个月.8例骨长入稳定,2例纤维稳定,无假体松动和下沉,1例出现大腿痛,3例股骨近端出现应力遮挡.结论 广泛微孔涂层长柄非骨水泥假体治疗Vancouver B2型假体周围骨折,很好地控制了骨折端轴向和旋转稳定性,且骨与假体有很好的骨整合,为骨折的愈合提供了良好的环境,骨折愈合率高.

The use of uncemented extensively porous-coated femoral components in the management of Vancouver type B2 periprosthetic femoral fractures

Objective To assess the outcome of patients with Vancouver type B2 periprosthetic fractures treated with femoral revision using an uncemented extensively porous-coated implant. Methods From October 2002 to May 2007, a retrospective clinical and radiographic assessment of 10 patients with Vancouver type B2 periprosthetic fractures treated with femoral revision was evaluated, among which 4 was cement fixation,6 was non-cement fixation in the index procedure. Results The mean follow-up for these patients was 44 months (range, 12 to 67 months). The mean Harris hip score was 87.6 points. All 10 reconstructions showed solid fracture union and a stable prosthesis, 8 was bone ingrowth, 2 was fibrous ingrowth. Complications in 4 patients included thigh pain in 1, stress shield in 3. Conclusions Vancouver type B2 periprosthetic fractures treated with uncemented extensively porous-coated femoral stems incorporate distally allowing stable fixation.