The Journal of arthroplasty | 2019

Comparison of Surgical Outcomes Between Standard and Elevated-Rim Highly Cross-Linked Polyethylene Acetabular Liners in Primary Total Hip Arthroplasty With Minimum 15-Year Follow-Up: Single-Center, Retrospective Cohort Study.



BACKGROUND\nThe aims of the present study are to (1) conduct the longest-to-date follow-up wear analysis of the highly cross-linked polyethylene acetabular liners, (2) assess the incidence of femoral and acetabular osteolysis, and (3) compare the surgical outcomes between standard and elevated-rim acetabular liners in primary total hip arthroplasty (THA).\n\n\nMETHODS\nIn this retrospective cohort study, we evaluated 112 primary THAs performed by a single experienced arthroplasty surgeon at our institution between March 2000 and December 2003. Patients were classified based on the type of acetabular liner used: standard or elevated-rim liner. For evaluation of surgical outcomes, the following data were collected: acetabular cup position (anteversion and inclination), wear rate (linear and volumetric), presence of osteolysis, history of reoperation (all-cause and wear-related), complications (deep joint infection, dislocation, and periprosthetic fracture), and Harris hip score at last follow-up.\n\n\nRESULTS\nLinear and volumetric wear rates were 0.028 mm/y (0.000-0.145 mm/y) and 11.641 mm3/y\xa0(0.000-70.000 mm3/y) in the standard group and 0.026 mm/y (0.000-0.094mm/y) and 9.706\xa0mm3/y (0.000-33.000 mm3/y) in the elevated-rim group, respectively. These rates were not significantly different between groups. One case of osteolysis was confirmed in the standard group, whereas no osteolysis was observed in the elevated-rim group.\n\n\nCONCLUSION\nWe suggest that elevated-rim highly cross-linked polyethylene acetabular liners might be a good implant option that can be used safely.

Volume None
Pages None
DOI 10.1016/j.arth.2019.12.026
Language English
Journal The Journal of arthroplasty

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