Aims. Diabetes mellitus is the most common co-morbidity associated with necrotising fasciitis. This study aims to compare the clinical presentation, investigations, Laboratory Risk Indicator for Necrotising Fasciitis (LRINEC) score, microbiology and outcome of management of this condition in diabetic and non-diabetic patients. Patients and Methods. The medical records of all patients with surgically proven necrotising fasciitis treated at our institution between 2005 and 2014 were reviewed. Diagnosis of necrotising fasciitis was made on findings of ‘dishwater’ fluid, presence of greyish necrotic deep fascia and lack of bleeding on muscle dissection found intra-operatively. Information on patients’ demographics, presenting symptoms, clinical signs, investigations, treatment and outcome were recorded and analysed. Results. A total of 127 patients with surgically proven necrotising fasciitis were included in this study. In all, 78 (61.4%) were diabetic and 49 (38.6%) were non-diabetic. Diabetics tended to have polymicrobial infections (p = 0.03), renal impairment (p < 0.001), end-stage renal disease (p = 0.001) and multiple co-morbidities (p < 0.001). They presented atypically, with less tenderness (p = 0.042) and less hypotension (p = 0.034). This resulted in higher rates of misdiagnosis (p = 0.038) and a longer time to surgery (p = 0.05) leading to longer hospital stays (p = 0.043) and higher rates of amputation (p = 0.045). However, the rate of mortality is comparable (p = 0.525). A LRINEC score of > 8 appears to be more sensitive in diabetic patients (p < 0.001). However, the increased sensitivity in diabetic patients may be related to hyperglycemia and electrolyte abnormalities associated with renal impairment in these patients. Conclusion. The LRINEC score must be used with caution in diagnosing necrotising fasciitis in diabetic patients. A high index of suspicion is key to the early diagnosis and subsequent management of these patients. Cite this article: Bone Joint J 2016;98-B:1563–8

External fixation is widely used in orthopaedic and trauma surgery. Infections around pin or wire sites, which are usually localised, non-invasive, and are easily managed, are common. Occasionally, more serious invasive complications such as necrotising fasciitis (NF) and toxic shock syndrome (TSS) may occur.

We retrospectively reviewed all patients who underwent external fixation between 1997 and 2012 in our limb lengthening and reconstruction programme. A total of eight patients (seven female and one male) with a mean age of 20 years (5 to 45) in which pin/wire track infections became limb- or life-threatening were identified. Of these, four were due to TSS and four to NF. Their management is described. A satisfactory outcome was obtained with early diagnosis and aggressive medical and surgical treatment.

Clinicians caring for patients who have external fixation and in whom infection has developed should be aware of the possibility of these more serious complications. Early diagnosis and aggressive treatment are required in order to obtain a satisfactory outcome.

Cite this article: Bone Joint J 2015;97-B:1296–1300.

Between January 1992 and December 1998, we treated 24 patients with necrotising fasciitis of a limb. There were 15 men and nine women with a mean age of 59.8 years (5 to 86). The infection was usually confused with cellulitis. Exquisite pain and early systemic toxicity were the most consistent clinical features. Diabetes mellitus and hepatic cirrhosis were the most commonly associated medical diseases. One third of the patients died. Those with involvement of the limbs above the knee or elbow on admission had a significantly higher rate of mortality than those with distal lesions (Fisher’s exact test, p = 0.027). There was no correlation between mortality and advanced age (Student’s t-test, p = 0.22) or between amputation and survival (Fisher’s exact test, p = 0.39)

Necrotising fasciitis (NF) of the extremities is a rapidly progressive, potentially life threatening soft tissue infection. Recent advances in its management, like hidrobisturi-assisted debridement (Versajet®), negative pressure wound therapy (NPWT), or Intravenous Immunoglobulin (IVIG) have not clearly influenced in mortality and morbidity rates, still high. We therefore sought to study the necrotising fasciitis of the extremities diagnosed in the last four year in our hospital. We investigate (1) the morbidity and mortality rates, (2) the microbiologic characteristics of the infection, and (4) the management focusing on the use of new treatment technologies. This is a 4-year retrospective chart review of all NF of the extremities who presented in our hospital, from 2010 through 2013. We collected data on demographics, comorbidities, diagnostic test, LRINEC score and microbiological information. We evaluated the therapeutic management of these patients, focusing in the intensive care necessities, the use of hidrobisturi and NPWT as well the treatment with IVIG. 20 patients satisfied our inclusion criteria. Lower extremity was the most common location of infection (60%). Blood cultures were available in 14 cases, 7 with a negative culture result (50%). The average LRINEC score on the day of presentation was 6 (range: 0–11). All the patients were treated operatively with 2.5 interventions on average (range: 1 to 5 operations). In the operative samples, one or more causative microorganisms were identified in 18/20 (90%) of the NF cases, with two culture negative cases. Overall, type II NF (Group A β-haemolytic streptococci) was found in 11 cases (55%) and Type I (synergistic polymicrobial) in 7 cases (35%). Versajet® was used in the first debridement in 40% (8 out 20) of the cases and in the second-look in 80% of the cases. In 5 cases (25%) a direct wound closure was selected and in 75% cases a VAC closure was the technique of choice. Thirteen patients (65%) were admitted in the intensive care unit, with a medium stay of 12 days. The overall mortality was 30 % with LRINEC score, glucose level and creatinin level being an independent risk factor of death (p < .05). Five amputations were identified in this series (25%). According our data, despite surgical advances, pharmacological new drugs and intensive care improvements, NF remains a disease with high mortality and morbidity. New technologies have been used widely in the last four years in our center without appearing to influence the final outcome of the disease