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Journal of Bone and Joint Surgery - British Volume, Vol 86-B, Issue 4, 510-514.
doi: 10.1302/0301-620X.86B4.14561  
Copyright © 2004 by British Editorial Society of Bone and Joint Surgery
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Computer-assisted revision total knee replacement

J. M. Sikorski, MD, FRCS, FRACS, Orthopaedic Surgeon

8/95 Hollywood Specialist, Monash Avenue, 6010, Western Australia.

A technique for performing allograft-augmented revision total knee replacement (TKR) using computer assistance is described, on the basis of the results in 14 patients. Bone deficits were made up with impaction grafting. Femoral grafting was made possible by the construction of a retaining wall or dam which allowed pressurisation and retention of the graft. Tibial grafting used a mixture of corticocancellous and morsellised allograft. The position of the implants was monitored by the computer system and adjusted while the cement was setting. The outcome was determined using a six-parameter, quantitative technique (the Perth CT protocol) which measured the alignment of the prosthesis and provided an objective score.

The final outcomes were not perfect with errors being made in femoral rotation and in producing a mismatch between the femoral and tibial components. In spite of the shortcomings the alignments were comparable in accuracy with those after primary TKR. Computer assistance shows considerable promise in producing accurate alignment in revision TKR with bone deficits.




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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General