Publication:

Study on correlation between combined femoral and acetabular anteversion in patients undergoing total hip arthroplasty using CT scan

Background The concept of hip Arthroplasty started as a very simple rudimentary idea of excising the hip joint (excision Arthroplasty), through to fusion of the hip, to actual replacement of the joint surfaces with various artificial substances ranging from glass, plastic, pig's bladder, ivory, ceramic polyethylene (PE) and more recently to actual metal-on metal hip replacement. Hip replacement is usually considered only after other therapies, such as physical therapy and pain medications, have failed. To determine the combined femoral and acetabular anteversion in patients undergoing total hip arthroplasty using CT scan.

Methods Patients admitted in hospital who underwent total hip arthroplasty from July 2013 to July 2015 were included in the study.

Results The study comprised of 40 patients, there were 15 (37.5%) females and 25 (62.5%) males. There were 7(17.5%) patients with less than 30º femoral component anteversion, 26 (65%) patients were in the range of 30º - 50º anteversion and 7 (17.5%) patients were in the range of more than 50º anteversion. There were 10 (25%) patients with less than 40 º combined anteversion, 23 (57.5%) patients were in the range of 40 º - 70 º anteversion and 7 (17.5 %) patients were in the range of more than 70 º anteversion.

Conclusions The functional outcome of the patients was better when the combined anteversion was between 4-7ff as compared to the functional outcome when the combined anteversion was either less than 40 " or more than 70'.  However, we required larger group of study to validate the findings.