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Thursday, October 7, 2010, 16:50-17:40Session B8: Management of Complications in TKAExtensor Mechanism Allograft Reconstruction in TKA for Ruptures orAnkylosis*Andrea Baldini - . - Prato, ItalyLuca Manfredini - IFCA Clinic - Florence, ItalyPierpaolo Ceruli Mariani - Ospedale Civile Misericordia E. Dolce - Prato, ItalyBernardo Barbanti - IFCA Clinic - Florence, Italy*Email: drbaldiniandrea@yahoo.itExtensor mechanism disruption in total knee arthroplasty (TKA) occurs infrequently but often requires surgicalintervention. We compared two cohorts undergoing extensor mechanism allograft reconstruction, one group had anextensor mechanism rupture, and the other had a recurrent ankylosed knee. Thirteen consecutive patients withextensor mechanism disruption or ankylosis after TKA were treated. Two different types of extensor mechanismallografts were used: quadriceps tendon-patella-patella tendon-tibial tubercle, and Achilles tendon allograft(Fig1).Demographic factors, diagnosis at extensor failure, Knee Society clinical rating scores, radiographs, and patientsatisfaction were recorded. The average time from extensor mechanism disruption to surgery was 6.6 months (range,1-24 months). At a mean followup of 24 months (range, 6-46 months), all patients were community ambulators. Noneof the patients showed a postoperative extensor lag. Average postoperative maximum flexion was 97° (90-115°) forthe ruptured group and 80° (75-90) for the ankylosed grup. All patients thought their functional status had improved,and 87% were satisfied with the results of the allograft reconstruction (Fig 2, 3, 4, 5). One patient had allograft failuredue to recurrent infection after re-revision for sepsis. The total extensor mechanism allograft and Achilles tendonallograft both were successful in the treatment of the failed extensor mechanism and showed promising results for thetreatment of the ankylosed knee.FiguresFigure 1 Figure 2 Figure 3 Figure 4 Figure 5Saturday, October 9, 2010, 14:00-14:40Session A21: Knee ArthroplastyExtramedullary Femoral Reference Without Navigation for Total KneeArthroplasty. a Multicenter Randomized Clinical Trial*Andrea Baldini - . - Prato, ItalyEttore Sabetta - Ospedale Civile - Reggio Emilia, ItalyVincenzo Madonna - Ospedale Sacro Cuore Don Calabria - Verona, ItalyClaudio Zorzi - Ospedale Sacro Cuore Don Calabria - Verona, ItalyPaolo Adravanti - Città di Parma Hospital - Parma, ItalyLuca Manfredini - IFCA Clinic - Florence, Italyfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]