HXLPE Vs CPE Cups Under 50 Years

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

59 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-10-01

Study Completion Date

2023-07-01

Brief Summary

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This randomized controlled trial evaluated the long-term wear of cemented highly cross-linked polyethylene (HXLPE) versus conventional polyethylene (CPE) acetabular cups in patients under 50 years undergoing primary total hip arthroplasty (THA).

All surgeries were performed at Radboud University Medical Center by three surgeons using a posterolateral approach. Acetabular components included either highly cross-linked polyethylene (HXLPE) cups (X3 RimFit) or conventional polyethylene (CPE) cups (Exeter Contemporary Flanged). Both were implanted with bone cement, and femoral components consisted of Exeter V40 stems with 28 mm cobalt-chromium heads. Impaction bone grafting (IBG) was routinely used, with mesh applied in cases of acetabular bone defects.

Radiographs were taken preoperatively and at 10-year follow-up using standardized protocols. Polyethylene wear was assessed with PolyWare software, creating 3D models from baseline and 10-year radiographs to calculate linear and volumetric wear. Cup inclination and osteolysis were evaluated in three acetabular zones (DeLee and Charnley classification).

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Detailed Description

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Conditions

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Osteoarthritis, Hip

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

After obtaining informed consent, the participants were randomized to a surgical intervention with the use of 60 sealed envelopes which were opened by the surgeon in theatre just before surgery.

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants