total hip arthroplasty via the mini posterior approach. This approach was first described by Kocher and Langenbeck and later modified by Gibson in 1950. There is a convex incision centered on the posterior rim of the major trochanter. The incision follows the curve of the buttock and at the height of the posterior lip of the major trochanter, it is peripherally oriented along the posterior outer surface of the femur. The major gluteus is divided along the muscle fibers. Guiding sutures are inserted into the tendon mass of the hip rotor muscles just prior to their origin on the major trochanter and dissected to expose and subsequently retract the posterior hip capsule.

The anterior approach is a modification of the classic Smith- Peterson anterior hip approach as described by Berend et al in 2009 [7]. This approach utilizes the intermuscular plane between the tendon fascia lata and the sartorius muscle, and laterally repairs the fibers of the rectus femur to expose and enclose the anterior pubic joint. A surgical traction table may be used during surgery.

The anterior approach is a modification of the classic Smith- Peterson anterior hip approach as described by Berend et al in 2009 [7]. This approach utilizes the intermuscular plane between the tendon fascia lata and the sartorius muscle, and laterally repairs the fibers of the rectus femur to expose and enclose the anterior pubic joint. A surgical traction table may be used during surgery.

Total hip replacement in patients suffering from hip osteoarthritis using the mini posterior approach

Investigate and quantify at the biochemical level with all available biomarkers the extent of tissue damage caused during a hip arthroplasty between different hip surgical approaches.

All patients will be subjected to imaging with a hip MRI

All patients will be monitored postoperatively for the prescribed period and data will be recorded.