Osteoarthritis of the hip Musculoskeletal Diseases Osteoarthritis
Conditions
Interventions
In all patients the Metha short stem (monoblock with 130° CCD angle and 0° ante-, retrotorsion) or the Bicontact stem (AESCULAP AG, Tuttlingen, Germany) was implanted by three experienced senior surge
Sponsors
German Research Council (Deutsche Forschungsgemeinschaft [DFG]) (Germany)
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Indication for unilateral implantation of the Bicontact stem or the Metha short stem due to osteoarthritis of the hip 2. Patients' ages between 35 and 70 years of either sex 3. Written informed consent
Exclusion criteria
Exclusion criteria: 1. Manifestly overweight (body mass index [BMI] greater than 35 kg/m^2) 2. History of previous surgeries on the same hip 3. Femoral fractures 4. Metabolic bone diseases 5. Use of steroids or other drugs affecting bone metabolism 6. Intraoperative cracks 7. Severe osteoarthritis of the contralateral hip 8. Received total hip arthroplasty (THA) on the contralateral hip during the study period 9. Patients in whom an event leading to restricted weight bearing on the ipsi- or contralateral hip occurred
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| BMD (g/cm^2) in Gruen Zones 1 - 7 per DEXA, measured 1 day pre-operatively, and 1 week, 6 months, 1 year, 2 years, 3 years and 4 years post-operatively. | — |
Secondary
| Measure | Time frame |
|---|---|
| Harris Hip Score per questionaire and clinical examination, measured 1 day pre-operatively, and 1 week, 6 months, 1 year, 2 years, 3 years and 4 years post-operatively. | — |
Countries
Germany
Outcome results
None listed