| Methods | Randomised controlled, patient‐blinded control trial Exp: Uncemented hydroxyapatite‐ coated chrome‐cobalt Elektra screw cup C: DLC all‐polyethylene cup |
| Participants | Age (mean): Exp/C = 60/56 Gender (female/male): Exp/C = 12:1/12:2 Stage of OA (mean): Exp/C = not stated |
| Interventions | Surgery Exp/C: Exp: Uncemented hydroxyapatite‐coated chrome‐cobalt Elektra screw cup. Three weeks immobilisation post‐surgery. Return to full activities at 3 months. C: DLC all‐polyethylene cup. Three weeks immobilisation post‐surgery. Return to full activities at 3 months. |
| Outcomes | Pain: A 100 mm VAS was used to assess pain at rest and with activity. Physical function: DASH score. Patient global assessment: Not reported. Range of motion: Not reported. Trapeziometacarpal joint imaging: Stereoradiographs to measure implant migration over time. Adverse events: Not reported. |
| Notes | Follow‐up at "3 months, 6 months, 12 months, and 24 months after the operation". Primary outcome of study was to measure implant migration. |
C = control; Exp = experimental; OA = osteoarthritis.