Acetabular Debonding: An Investigation of Porous Coating Delamination in Hip Resurfacing Arthroplasty.

Conclusions: We identified implant system, postoperative time, and acetabular component placement as variables contributing to rate of debonding. We recommend minimizing acetabular inclination angle according to RAIL guidelines. Further, we evaluated manufacturing differences between the two implant systems but did not have access to proprietary data to identify the cause of debonding. Both implants met ASTM standards, yet only the Group 1 implant debonded. This suggests the second implant had greater fatigue shear strength. Because the Group 2 implant achieved a more durable interface that did not debond, we suggest the ASTM F1160 standard for fatigue shear strength be increased to that achieved by its manufacturer. Level of Evidence II: A retrospective evaluation of prospectively collected data. PMID: 30515334 [PubMed]
Source: Adv Data - Category: Epidemiology Authors: Tags: Adv Orthop Source Type: research