“IS CLOSED SUCTION DRAIN NECESSARY FOLLOWING UNICOMPARTIMENTAL KNEE REPLACEMENT? A PROSPECTIVE RANDOMIZED STUDY”

Abstract

Drainage of the surgical wound following major surgical procedures is advocated to avoid haematoma formation. Recently the need for of wound drainage in joint arthroplasty has been questioned. The aim of this prospective randomised study is to determine the benefits of a postoperative closed-suction drain after UKR.

In a prospective randomised trial we evaluated the use of a postoperative closed-suction drain in unicompartmental knee replacement. Seventy-eight patients were divided into two groups: one without a postoperative closed-suction drain (Group A) and one with a drain (Group B). Both groups were matched for age, sex, and pre-operative haemoglobin.

In group A we observed a lower day one post-operative analgesic requirement, smaller knee circumference 3 days postoperatively and less local wound complications. No deep infections occurred in either group during the follow-up period. Drain usage in UKR resulted in no significant advantage in postoperative pain, range of motion, and hospital stay. Post-operative drainage does however increase the cost of the procedure both in labour and equipment expenditure.

We conclude that avoiding postoperative closed-suction drainage in UKR does not influence the final outcome.