By performing a surgical hip dislocation, full access to the hip joint is gained.  Nine patients (10 hips) with osteonecrosis of the femoral head were treated with surgical hip dislocation and varus osteotomy. 
Surgical hip dislocation
Osteosynthesis is performed with an angular stable screw or a blade plate. 
angular stable screw
Osteosynthesis is performed with an angular stable screw or a blade plate. 
blade plate
A passive motion device is installed during hospital stay beginning immediately after surgery to prevent capsular adhesions. 
passive motion device
After surgery, patients are mobilized with partial weight-bearing of 15 kg with the use of crutches for at least 8 weeks. 
crutches