Knee Replacement
Knee replacement operations are becoming more and more successful allowing many otherwise housebound people the opportunity to become mobile again. The reason behind the need for this operation can vary, but basically the articular surfaces between the long bone of the thigh (Femur), and the larger of the two leg bones (Tibia), where they hinge at the knee, becomes so badly eroded and distorted that pain is produced whenever movement occurs.
This erosion can arise as a result of normal heavy wear and tear, abnormal wear due to earlier injury to that joint surface or disease such as Rheumatoid arthritis attacking the surface. Cartilage would normally cover the two articular surfaces allowing the joints to glide over each other. The absence of cartilage means that eroded bony surfaces articulate with each other, and friction and pain results.
In order to cure this problem, a new artificial articular surface that contains no pain producing fibres is used to replace one or both surfaces, the original surface being surgically removed. Soon after the operation the patient is encouraged to start using the leg, with supports such as crutches etc. initially.
The sooner mobility is encouraged the quicker the muscle tone will develop to support the knee and encouragement to stretch out the tissues around the joint operation site is essential to improve overall movement. Physiotherapy, hydrotherapy and gentle continuous exercise regimes, are all positive aids to recovery. Complete recovery can vary from person to person, but an average of 3months is usual.
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