Anderson Anthony W, Polga David J, Ryssman Daniel B, Trousdale Robert T
Mayo Clinic, Rochester, MN 55905, USA.
Knee. 2009 Aug;16(4):295-8. doi: 10.1016/j.knee.2008.12.003. Epub 2009 Jan 26.
Periprosthetic patellar fracture with marked loss of bone stock presents a significant problem in total knee arthroplasty. Treatment outcomes are often unsatisfying and may lead to disruption of the extensor mechanism of the knee. We present a patient with a Type IIIb periprosthetic patellar fracture treated by a novel approach. Three Steinmann pins were used to reduce the patella and form scaffold for bone graft and a patellar button was cemented into the construct. At 7 years followup, the patient has maintained excellent range of motion, reports no knee pain, has healed the patella fracture, and has restored patellar bone stock.
假体周围髌骨骨折伴明显骨量丢失在全膝关节置换术中是一个重大问题。治疗结果往往不尽人意，可能导致膝关节伸肌机制破坏。我们报告一例采用新方法治疗的Ⅲb型假体周围髌骨骨折患者。使用三根斯氏针复位髌骨并形成骨移植支架，将髌骨纽扣固定在该结构中。随访7年时，患者保持了极佳的活动范围，无膝关节疼痛，髌骨骨折已愈合，髌骨骨量得以恢复。
