| Autor: |
Michael D, Kurdziel, Michael D, Newton, Samantha, Hartner, Kevin C, Baker, Jerome Michael, Wiater |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Journal of orthopaedic research : official publication of the Orthopaedic Research Society. 36(7) |
| ISSN: |
1554-527X |
| Popis: |
Polyethylene wear is a known complication in total joint arthroplasty, however, in vivo wear rates in reverse total shoulder arthroplasty (RTSA) remain largely unknown. This study aimed to quantify volumetric and surface deviation changes in retrieved RTSA humeral liners using a novel micro-computed tomography (μCT)-based technique. After IRB-approval, 32 humeral liners (single manufacturer and model) with term-of-service greater than 90 days were analyzed. Clinical demographics and surgical data were collected via chart review. Unworn liners were used as geometric controls. Retrieved and unworn liners underwent μCT scanning. Retrieved liner volumes were isolated, co-registered to controls of matching geometry, and surface deviations of the articulation surface and rim were computed. Differences in total volume loss (TVL), volumetric wear rate (VWR), and surface deviation were reported. Semi-quantitative grading evaluated rim damage presence and severity. Mean term-of-service for all liners was 2.07 ± 1.33 years (range: 0.30-4.73). Mean TVL and VWR were 181.3 ± 208.2 mm |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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