The purpose of this systematic review was to determine the clinical and radiologic benefit of hydroxyapatite coating in uncemented
primary total hip arthroplasty. A database of Medline articles published up to September 2007 was compiled and screened. Eight
studies involving 857 patients were included in the review. Pooled analysis for Harris hip score as a clinical outcome measure
demonstrated no advantage of the hydroxyapatite coating (WMD: 1.49,
P = 0.44). Radiologically, both groups showed equal presence of endosteal bone ingrowth (RR: 1.04,
P = 0.66) and radioactive lines (RR: 1.02,
P = 0.74) in the surface area of the prosthesis. This meta-analysis demonstrates neither clinical nor radiologic benefits on
the application of a hydroxyapatite coating on a femoral component in uncemented primary total hip arthroplasty.
Keywords Systematic review - Uncemented hip arthroplasty - Porous coating - Hydroxyapatite coating - Harris hip score - Long term follow-up - Radiologic outcome