frictional torque with large diameter heads
Research type
Research Study
Full title
Trunion wear due to high frictional torque in large 40mm heads in V40 taper of Exeter stem - clinical problem or urban myth?
IRAS ID
198872
Contact name
Rajkumar Thangaraj
Contact email
Sponsor organisation
The Shrewsbury and Telford Hospital NHS Trust
Duration of Study in the UK
0 years, 3 months, 30 days
Research summary
Large diameter heads are used in hip replacements to achieve better stability and range of motion. As increase in diameter increases frictional torque, it is suspected there is an increase in debris from the interface between head and femoral stem. It is unclear whether this is a hypothetical problem or a clinical issue. The study compares the mid term survival of patients with 40mm heads with national average assuming if there is a higher wear due to metal debris, there should be a higher rate of failure resulting in early revision. The national data is a combination of all size heads. individual data is limited.
REC name
East Midlands - Leicester South Research Ethics Committee
REC reference
16/EM/0117
Date of REC Opinion
7 Mar 2016
REC opinion
Favourable Opinion