Improvement in Wound Healing With Negative Pressure Wound Therapy for Postoperative Total Hip Arthroplasty

実験的：PREVENA Group

Patients will be treated with the PREVENA negative pressure device following total hip arthroplasty. This dressing will be used for a period of seven days.

デバイス：PREVENA

The device is a sealed negative pressure wound therapy tool. The device will be placed on the skin during surgery and left in place until their followup at 7 days.

他の名前：

• KCI PREVENA Incision Management system

介入なし：Standard group

Patients will be treated with the standard absorptive dressing following total hip arthroplasty.

Mean Wound Healing Scores by the ASEPSIS Criteria

A method of evaluating wounds for infection risk that incorporates multiple wound healing factors such as erythema, drainage, and dehiscence is the ASEPSIS (Additional treatment, presence of Serous discharge, Erythema, Purulent exudate, Separation of the deep tissue, Isolation of bacteria, and duration of inpatient Stay) wound scoring system. Originally developed and validated for cardiac surgery sternal wounds, ASEPSIS evaluates the wound for the severity of multiple factors linked with surgical site infection. This includes dehiscence, exudate/discharge, and erythema. The higher the score, the more likely a surgical site infection will be present. This score will give us a more diverse picture of postoperative wound healing and the influence of Negative Pressure Wound Therapy. Scores can range from 0 to 65, with most scores expected at the lower scale.

Number of Participants With Infection

The investigators will continue to monitor the patients for development of an acute postoperative infection. A deep infection refers to an infection below the superficial soft tissue and likely involving the prosthesis. This will be evaluated by the musculoskeletal infection society consensus on total joint infection.

Criteria include:(Either one major criteria or four minor criteria) Major criteria Sinus track communicating with the prosthesis Two separate cultures from the joint positive for the same organism

Minor criteria Elevated erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) Elevated synovial leukocyte count Elevated synovial neutrophil percentage Purulent drainage from the joint One positive fluid culture from the joint Histological analysis of tissue showing more than 5 neutrophils per high power field in 5 fields