Epidemiology of upper limb necrotising fasciitis in England: A national study (1998-2018).

BACKGROUND: Necrotising fasciitis (NF) is a surgical emergency characterised by rapidly progressive infection of the subcutaneous tissues and fascial planes, leading to widespread fascial necrosis and systemic toxicity. Although NF can affect any part of the body, the upper limbs are a notable site, accounting for 27% of cases. Antibiotics and surgical debridement form the basis of treatment. METHODOLOGY: We conducted a retrospective study on NF of the upper limb requiring surgical intervention from 1998-2018 using data from Hospital Episode Statistics. Age, sex, deprivation index, length of stay (LOS) and complications were analysed. RESULTS: We identified 728 patients, comprising 468 males and 260 females, with a mean age of 54.97 years (95% CI: 53.76-56.17 years). The incidence of NF in the upper limb increased from 0.0035 per 100,000 in 1998 to 0.01 per 100,000 in 2018. Lower index of multiple deprivation scores correlated with higher NF prevalence, with 67.32% (n=474) presenting scores between 0 and 5. The average LOS was 27.55 days (95% CI: 25.08-30.02 days). Complications within 30 days of surgery included 8 (1.10%) cases of renal failure, 8 (1.10%) urinary tract infections (UTIs), and 103 (14%) deaths. Meanwhile, 90-day complications included 23 (3.15%) cases of renal failure, 6 (0.82%) pulmonary embolisms, 22 (3.02%) UTI, and 113 (16%) deaths. CONCLUSION: This study highlights the impact of upper limb NF and provides crucial insights into its incidence, demographic correlations, and clinical outcomes, which can inform clinical management.