Mr Waterfield is currently involved in several clinical trials and his research interests include the following areas:

Trial of 28mm diameter heads in metal-on-metal total hips versus large (40mm to 56mm) heads.

Trial of cementless Hi-Nek stem (preserves femoral neck) in total hip replacement.

Trial of cemented Hi-Nek stems in total hip replacement. The Hi-Nek Total Hip replacement is a cemened prosthesis that is designed to allow the preservation of the whole of the meial femoral neck (see image). Studies indicate that medial femoral neck preservation both improves torsional stability and reduces distal migration. Furthermore, finite element testing analysis has suggested that there is improved weight distribution over the retained neck segment, therby reducing the forces acting at the calcar and preventing overload of the proximo-medial cement mantle.

Trial of "Orthovisc"  visco-supplementation of hip joints after arethroscopic debridement / washout of hip joints.