Ulcero-necrotic wounds (UWN) are acute bacterial infections of the deep layers of the skin by aerobic and/or anaerobic bacteria of varied topography and microbiology [1] [2]. It progresses to chronicity when there is an absence of healing within 4 - 6 weeks has failed to follow the normal methodical process of healing [3]. Ulcero-necrotic wounds are a medical-surgical emergency whose evolution may lead to septicemia, which is sometimes fatal for the patient. The germs frequently found are beta-hemolytic Streptococcus and Staphylococcus aureus, but a poly-microbial association is sometimes noted [3]. There is a male predominance with preferential involvement of the lower limbs. PUN presents as a blackish necrotic lesion on an inflamed, edematous, and very painful limb associated with other local signs: oedema, induration, haemorrhagic bullae, cyanotic placard, greyish livid zone, cutaneous hypoesthesia, snowy crepitation, muscle deficit. The chronicity of ulcero-necrotic wounds is a public health problem. In France, according to the inter-regime health insurance information system, in 2012, 670,000 patients were treated for chronic wounds [4]. In the United States, 500,000 to 600,000 patients are treated for chronic limb ulcers per year [5]. In sub-Saharan Africa, several studies have suggested an infectious etiology of ulcero-necrotic wounds [6] [7]. Because of their chronicity, ulcero-necrotic wounds have a major repercussion on the quality of life of the patients and decrease their autonomy; they have an impact on the socio-economic development of the patient’s family and the State through the hospital social assistance service.

During the study period, 57 patients were recorded, i.e. 1.3% of our activities; they were 43 men (75.4%) and 14 women, i.e. a sex ratio of 3. The mean age was 40.7 years, with a standard deviation of 8.4 and extremes of 7 years and 80 years. The average consultation time was 25.1 days. The socio-occupational activity was agropastoralism in 65% of cases. The most predominant factors were traditional treatment in 49 cases (86%), followed by neglected traumatic wounds in 34 cases (59.6%) (see Table 1, Figure 1). The site of the UIPs varied, they were located on the lower limb in 39 cases (68.5%) (see Table 2). Antibiograms were performed in 35 cases (61.4%), the most common germ was staphylococcus aureus in 21 cases (36.8%). The clinical signs of severity were hyperthermia in 22 cases (38.6%), severe anemia in 20 cases (35.1%) and tetanus in 2 cases (3.5%). Local care (see Table 3) was excision of necrotic tissue in 48 cases (84.2%), for some patients table sugar (see Figure 2) was used in 9 cases (15.7%) and maggot

therapy in 2 cases (3.5%) (see Figure 3), skin grafting was performed in 9 cases (15.7%) and limb amputation in 8 cases (14%). The evolution (see Table 4) was marked by recovery without sequelae in 18 cases (31.6%), recovery with sequelae was observed in 30 cases (52.7%), the sequelae (Table 5) were predominantly in

Limb disability: amputation, stiffness, ankylosis. OMI: edema of the lower limbs.

the limbs in 24 cases (80%). The average duration of hospitalization was 38 days. Hospital care was provided by the social welfare service in 35 cases (61.4%) and by the patient’s family in 17 cases (29.8%) (see Table 6). 19 cases (39.5%) did not fully resume socio-economic and professional activities and 11 cases (23%) partially resumed (see Table 7). The overall mortality was 15.7%.

In our study, the predominant population was male, i.e. 75.4% of the cases. This male predominance has been found in the literature [6] [8]. The mean age was 47.3 years, which is identical to those found by other authors [8] [9] [10]. In the African series, young adult males are more frequent, contrary to the European series where elderly (65 - 74 years) female subjects are predominant [11]. The most represented socio-occupational stratum was agropastoralism in 65% of the cases; in Mali this stratum contributes to the gross domestic product of the economy in 44% of the cases [12]. The average delay of consultation was 25.1 days, Traoré A. [8] in Bamako found 1.2 months. This delay in consultation was due to the lack of means and the choice of traditional treatment as first-line treatment. The most common factor found was neglected traumatic wounds (59.6%), which are the entry point for germs. This is identical to other African studies [13]; in Europe, UTIs are of vascular etiology [14] [15].

The lesions were located on the lower limb in 68.5% of cases, in line with other studies [16] [17].

The germ found after antibiotic susceptibility testing was staphylococcus aureus in 36.8% of cases

A. Traoré [8] in Bamako found the same germ in 50.6% of cases. During local care, because of the high cost and the small quantity of hydrogels in relation to the surface of the wound, we resorted to an old practice, which is the use of table sugar in 15.7% of cases, which gave us a good result, with one case of hyper-budding. This practice has been studied by Andrew. B. J. [18]. Maggot therapy was used in 3.5% of cases. The maggots were collected from the wound; the wound was cleaned with saline and then the same maggots were placed on the wound with a dressing for 48 hours. This procedure gives a good result on fibrin. The only problem with this treatment is the refusal of patients to undergo this protocol. According to Dumville J. C. [19], maggot therapy significantly reduces the time required for debridement. Self-grafting of the skin was performed in 15.7% of cases in our study; in the literature, this rate varies according to the authors [8] [16]. We performed more skin grafting in pellets, which is inexpensive and is done under local anesthesia. Healing with sequelae was 52.7%, the total non-resumption of socio-professional activity was observed in 39.5% of cases. Hospital care was provided by the social welfare service in 61.4% of cases, which confirms the difficulty of managing PUN. The average duration of follow-up was 2.7 months; A. Souissi [20] in Tunisia found 11.35 months, which could be explained by the etiology of PUN. Depending on the nature of the after-effects, patients were referred to the orthopaedic rehabilitation center, physiotherapy or the orthopaedic trauma department. The overall mortality in our series was 15%, it has not been mentioned by other authors, during our study the deaths were due to tetanus and sepsis.

Our study has allowed us to show that ulcero-necrotic wounds are complex to manage. Poverty is a factor of delay in consultation and difficulty in management. The after-effects are sometimes disabling and can influence the socio-professional and economic activity of the patients for life.

The authors declare no conflicts of interest regarding the publication of this paper.

Traore, L.I., Sangare, S., Sogoba, G., Kouyate, M., Cisse, A., Skeita, B., Dembele, S., Goita, L., Sdiakité, A., Sanogo, M., Camara, M. and Traore, D. (2022) Ulcero-Necrotic Wound: Socio-Economic Impact, Kayes, Mali. Surgical Science, 13, 280-287. https://doi.org/10.4236/ss.2022.136035