Assessment of Polyethylene Wear, Migration and Clinical Outcome in Total Hip Replacement

Assessment of Polyethylene Wear, Migration and Clinical Outcome in Total Hip Replacement - A Prospective Randomized Control Trial

The objective of the study is to investigate head penetration, cup migration, and clinical outcome in total hip replacements using a factorial design. Treatment groups are E-Poly versus ArComXL liners, and 36 mm versus 32 mm head size.

Inclusion Criteria:

• Primary idiopathic arthritis,
• Eligible for uncemented total hip arthroplasty
• 40 to70 years of age,
• Cup size of 54mm and above

Exclusion Criteria:

• Anteversion where non-standard stem can be used,
• Dysplasia (Center-edge angle of Wiberg < 20°),
• Malignant condition
• Prior radiotherapy
• Physical or psychological condition that renders it impossible for the patient to take part in our usual rehabilitation programme (as stated in the department's standard operation procedure),
• Complications during surgery (requiring screws in shell or femoral cerclage)