Hip Stability in Primary Total Hip Arthroplasty Using an Anatomically Sized Femoral Head Study by  Milton J. Smit, MD

http://www.orthosupersite.com/view.asp?rID=41028

ORTHOPEDICS 2009; 32:489Dislocation after total hip arthroplasty (THA) remains a problem despite many advances in technique and prosthetic design over the 5 decades since the introduction of total joint replacement. This article reports the short-term results (1 year of follow-up) of THA in 235 patients who received a large, anatomically sized femoral head (BFH Technology; Wright Medical Technology, Inc, Arlington, Tennessee) with modular necks for hip stability……This study indicates that using a large femoral head may reduce the incidence of dislocation and may enable early return to activities postoperatively.