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Published on: March 26, 2015
Reconstructing the chronically disrupted knee extensor mechanism after total knee arthroplasty: Hourglass variant of
C Fiquet1, A Schneider1, R Ballis2
1Centre Albert-Trillat, hôpital universitaire Lyon Nord, 103, Grande Rue de la Croix-Rousse, 69004 Lyon, France.
Abstract:
Allograft reconstruction is a valuable treatment option for patients with chronic extensor mechanism disruption after total knee arthroplasty. Here, an hourglass variant of the original partial allograft technique is described. An hourglass-shaped patellar bone block is press-fit into the native patella. The graft is fixed to both the patella and the tibia then sutured with the knee fully extended. Outcomes of this technique were assessed in 5 patients after at least 24months' follow-up. The mean knee and function Knee Society Score values were 77.8 and 64.0, respectively. Extension lag was less than 10 in all 5 patients. This hourglass variant of the partial allograft technique is a useful treatment option that can be used even after patellar resurfacing.
