Highly Cross-Linked Polyethylene Improves wear and Mid-Term Failure Rates for Young Total Hip Arthroplasty Patients. Issue 5 (September 2015)

• Record Type: Journal Article
• Authors: Keeney, James A.; Martell, John M.; Pashos, Gail; Nelson, Christopher J.; Maloney, William J.; Clohisy, John C.
• Is Part Of: Hip international. Volume 25:Issue 5(2015)
• Page Start: 435
• Page End: 441
• Publication Date: 2015-09
• Subjects: Polyethylene wear -- Active THA patient -- Young THA patient -- Mid-term Follow-up; Hip joint -- Pathophysiology -- Periodicals; Hip joint -- Diseases -- Periodicals; Hip joint -- Surgery -- Periodicals; 617.581005
• DOI: 10.5301/hipint.5000242
• Languages: English
• ISSNs: 1120-7000

Abstract

We compared clinical outcomes and polyethylene wear for 2 young primary THA patient cohorts (<50 years of age) at mid-term follow-up. In total, 72 patients (84 hips) received a coventional polyethylene liner (CPE) and 84 patients (89 hips) received a highly cross-linked polyethylene liner (HXLPE). Mean Harris Hip Score improved to 81 points for both groups. UCLA activity scores were higher for HXLPE patients (6.0 vs 5.3, p = 0.03), with lower mean linear wear (0.02 vs 0.13 mm/year, p<0.001) and lower mean volumetric wear (75.1 vs 229.8 mm 3, p<0.001) at an average of 70 months follow-up. No HXLPE patient required revision for wear related concerns, compared to 5 CPE patients with revision for aseptic loosening or impending radiographic failure (0% vs 5.9%, p = 0.02). HXLPE is associated with reduced wear among young, active THA patients without increased risk of early mechanical failure.