Radiographic measurement of wear in 5 cohorts of patients observed for 5 to 22 years.

摘要: Standardized wear measurements using a tablet digitizer were made on long-term serial radiographs for 5 cohorts of total hip replacements to determine any differences in acetabular component polyethylene rates. The groups included 4 cemented series and 1 cementless series. Comparing the rates linear groups, 22-mm-head components had similar when compared with 28-mm-head components, both uncemented, volumetric greater than components. Although molded less machined there was no statistically significant difference between 2. uncemented metal-backed articulation showed accelerated at shorter 5-year followup. constant variable all femoral component.