Replacement of the knee joint has been performed in Portsmouth since June 1972. A few excellent results were obtained before the present series was started in 1976 but there were difficulties with alignment, patello-femoral pain, wear and loosening. Knee replacement is much more difficult proposition than hip replacement because, from the anatomical position, movement at the new joint must be prevented in all directions except flexion and, to a small extent, rotation. It is the need to restrict unwanted movements between the long bones of the thigh and tibia and yet provide a good range of flexion which has been the main obstacle to longterm success in knee replacement.
KeywordsFemoral Component Knee Replacement Tibial Component Card Index Severe Deformity
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