Disadvantages

This approach has a slightly higher dislocation rate following prosthetic implant in the hip joint than does an anterior approach. There is also some risk of damage to the sciatic nerve, which is not the case with the anterior approach. Also, in children, there is risk to the blood supply to the femoral epiphysis, which largely comes through the capsule. The most critical blood vessels come in at the pos-terosuperior corner of the capsule. For this reason, the posterior approaches to the hip are generally avoided in children with an open growth plate at the hip.

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