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What are the types of artificial hip joint?

Artificial hip joints are  broadly divided into three categories:

• Conventional Total Hip in which femoral head is sacrificed and an artificial ball of smaller head size is implanted with thick polyethylene cup. The conventional hip joints are broadly divided on the basis of their fixation with the bone. Cemented total hip is the one where the components are fixed in pelvis and thighbone with bone cement. Uncemented total hip prosthesis do not require bone cement for fixation, rather it is snugly fitted. This implant has the potential to allow bone to grow into it and therefore preferred in younger patients. In some cases only femur may be fixed with cement and the socket is cementless. This prosthesis is known as Hybrid total hip.

Surface Hip X-ray

• Conservative or Surface Hip Replacement in which the femoral head is not sacrificed but reshapened thereby allowing an artificial ball of the size same as patient’s femur head. The advantage is more movements and stability thereby allowing patients to pursue Indians lifestyle such as sitting on the floor. This process is more suitable for young arthritic patients with good bone quality.

                                                                                       LDH X-Ray                         Implant

Implant

• Large Diameter  Metal on Metal Hip Replacement in which femoral head is sacrificed but the artificial ball of the size same as patients femur head is used. The advantages are same as Surface Hip Replacement.

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