From 2001 to 2012, total hip arthroplasty implant usage trends favored cementless fixation, metal-on-polyethylene or ceramic-on-polyethylene bearings, modular acetabular cups and large diameter femoral heads, according to study results.
Researchers analyzed 105,291 total hip arthroplasty (THA) procedures to evaluate trends in implant utilization from 174 hospitals throughout the United States.
Study results showed an increase in cementless THA constructs from 46% in 2001 to 93% in 2012, with cementless stems used 94% of the time and cemented stems used 5.8% of the time. There was a decrease in the use of metal on highly cross-linked polyethylene bearings for primary THA from 63% in 2011 to 59% in 2012, as well as a decrease in ceramic-on-ceramic bearings from 11% in 2004 to 1% in 2012, according to the researchers.
Although the researchers found a decline in use of metal-on-metal implants from 11% in 2010 to 1% in 2012, there was an increase in the use of ceramic heads and poly liners from 6% in 2001 to 38% in 2012. Of the acetabular cups used in 2012, modular two-piece cups accounted for 99% and one-piece acetabular cups accounted for 1%.
Among the acetabular liners used in 2012, 98% were highly cross-linked polyethylene. Additionally, 61% of the femoral heads used in primary THA were metal vs. 39% of ceramic heads, according to the researchers.
Fifty-one percent of femoral heads were 36 mm and 28% were 32 mm.
Disclosure: See the study for a full list of all authors’ relevant financial disclosures.