Wound drains in proximal femoral fracture surgery: a randomized prospective trial of 177 patients

Abstract

We report on a prospective randomized trial on the effect of wound drains on wound healing following surgery for proximal femoral fractures. One hundred and seventy-seven consecutive patients admitted to Queen's Medical Centre Nottingham, undergoing AO dynamic hip screw (DHS) or hemiarthroplasty were randomized whether or not to receive wound drainage. Wound healing was assessed in terms of ultrasound examination, the ASEPSIS wound score system and overt infection rates. All patients were followed up at 6 weeks and 6 months. Ultrasound examinations showed that drains were indeed ineffective in preventing haematoma formation, the first time this has been demonstrated objectively. However, using drains failed to prevent late seroma formation. Patients who received wound drainage showed statistically better wound healing on the ASEPSIS wound scoring system and a reduced infection rate. The ASEPSIS scores on day 2 and 5 postoperatively proved an accurate predictor of poor wound healing. This study conflicts with previous smaller studies which failed to show an effect of wound drainage upon wound healing, and strongly supports the use of wound drains.