G7 Acetabular System vs. Exceed ABT Acetabular System in THA
G7 Acetabular System vs. Exceed ABT Acetabular System in THA
Evaluate the safety and effectiveness of patients who received G7 Acetabular system in
 conjunction with Ceramic on Ceramic articulation and Taperloc Complete Microplasty stem
 compared to patients who received the Exceed ABT Acetabular system with the same combination
This study will be a multi-center randomized controlled study. Eligible patients will be
 randomly assigned to receive a combination of G7 Acetabular system with CoC articulation and
 Taperloc Complete Microplasty stem or Exceed ABT Acetabular system with CoC articulation and
 Taperloc Complete Microplasty stem. Patient demographics, preoperative clinical outcomes,
 operative information, postoperative clinical outcome, radiographic assessment, incidence of
 squeaking, incidence of dislocation, implant survivorship and adverse events will be
 collected prospectively.
Inclusion Criteria:

 1. Non-inflammatory degenerative joint disease, including osteoarthritis and avascular
 necrosis.

 2. Rheumatoid arthritis.

 3. Correction of functional deformity.

 4. Treatment of non-union, femoral neck fracture, and trochanteric fractures of the
 proximal femur with head involvement, unmanageable by other techniques.

 5. Revision of previously failed total hip arthroplasty.

 6. age over 20 years old

 Exclusion Criteria:

 1. uncooperative patient or patient with neurologic disorders who are incapable of
 following directions,

 2. osteoporosis,

 3. metabolic disorders which may impair bone formation,

 4. osteomalacia,

 5. distant foci of infections which may spread to the implant site,

 6. rapid joint destruction, marked bone loss or bone resorption apparent on
 roentgenogram, and

 7. vascular insufficiency, muscular atrophy, or neuromuscular disease.