Outcome After Treatment of Distal Fibula Fractures Using One-Third Tubular Plate, Locking Compression Plate or Distal Anatomical Locking Compression Plate

Abstract

Surgical treatment of lateral distal fibula fractures is associated with high risk of reoperation and complications. The primary aim was to report risks of surgical site infection (SSI) and reoperation ≤1 year after treatment with one-third tubular plate, locking compression plate (LCP) or distal anatomical LCP. Secondary to investigate associations between patient, fracture and operative factors and risk of SSI and reoperation. Retrospectively, we evaluated a consecutive cohort of 588 patients having osteosynthesis of distal fibula with a one-third tubular plate (n=417), LCP (n=115) or distal anatomical LCP plate (n=56) at Bispebjerg Hospital, Denmark from January 2010 to December 2015 with 1-year follow-up. The risk of SSI was 15% (95% confidence interval [CI] 12-18) after treatment with one-third tubular plate, 30% (95% CI 23-39) after LCP and 41% (95% CI 29-54) after distal anatomical LCP. We found a significant association of SSI and LCP (p=.005) and distal anatomical LCP (p < .001). Other factors associated with increased risk of SSI were age>70 years (p < .001), smoking (p=.004), DM (p=.007), surgery time ≥90 minutes (p=.006) and surgery delay of 3-6 days (p=.007). The risk of reoperation ≤1 year was 10% (95% CI 6-11) for one-third tubular plate, 21% (95% CI 14-29) for LCP and 25% (95% CI 16-38) for distal anatomical LCP. We found a significant association between distal anatomical LCP and risk of reoperation (p=.008). The only other risk factor associated with risk of reoperation was surgery delay of more than 7 days (p=.004). We conclude that LCP plate and the distal anatomical LCP plate should only be used after careful considerations.