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Allograft Reconstruction of Extensor Mechanism Disruption after TKA

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The Achilles tendon is then draped over the anterior tibia and patella. (see above) The allograft tendon is then sutured to the native extensor mechanism to augment the repair (Figure 24). Care should be taken to achieve stable repair.  In addition, it is imperative that the graft is tensioned in full extension to prevent extensor lag.


Figure 24: Final . Final repair utilizing non-absorbable suture

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Rand J, Morrey B, Bryan R. Patella tendon rupture after total knee replacement. Clin Orthop Relat Res 1989;(244):233-8
Lynch A, Rorabeck C, Bourne R. Extensor mechanism complications following total knee arthroplasty. J Arthroplasty 1987;2(2):135-40
Rand J. Extensor mechanism complications following total knee arthroplasty. J Knee Surg 2003;16(4):224-8
Burnett S, Berger R, Paprosky W, Della Valle C, Jacobs J, Rosenberg A. Extensor mechanism allograft reconstruction after total knee arthroplasty. A comparison of two techniques. J Bone Joint Surg Am 2004;86-A(12):2694-9

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