Use of fast-setting hydroxyapatite cement for secondary craniofacial contouring

Patients who have previously had surgical correction of major craniofacial deformities will often have residual contour deformities they wish to have improved at a later date. The development of hydroxyapatite cement has simplified these procedures. The setting time is reduced to 5 to 8 minutes by mixing the cement with a phosphate-based solution, increasing the tensile strength, and maintaining the same biocompatibility and osseoconductivity. This study includes 48 patients who presented with a variety of residual contour irregularities secondary to a craniofacial congenital anomaly or a posttraumatic defect. All but one of the patients with congenital craniofacial conditions had their initial surgical correction performed by the senior author (Magee) and had regular follow-up visits. Variable amounts of hydroxyapatite cement were used according to the size of the defect to be corrected. Five patients had a postoperative complication: two infections, one seroma, one persistent swelling, and one drain retention. Patients were followed from 6 months to 3 years (mean, 1 year 5 months). Good results were achieved in 38 patients, acceptable results with minor asymmetries were seen in seven patients, and three other patients required a second intervention to obtain a better contour. Cranioplasty with fast-setting hydroxyapatite cement is a simple and reliable procedure, with a low complication rate. Attention to simple technical and operative principles can provide excellent results.