Abstract
In Kinshasa, professional motorcyclists (Wewa), known as Wewa, are exposed daily to biomechanical constraints that can promote the onset of musculoskeletal disorders (MSDs). However, data on their prevalence and risk factors remain limited. To determine the prevalence of MSDs and identify associated factors among motorcyclists in Kinshasa. An observational, descriptive, and analytical cross-sectional study was conducted among a sample of 422 professional motorcyclists recruited by non-probability convenience sampling in the city of Kinshasa. Data were collected using a structured questionnaire incorporating the Standardized Nordic Questionnaire. The overall prevalence of MSDs was 82.5%, with a predominance of lumbar (66.8%) and cervical (36.9%) disorders. Nearly 49% of participants reported an impact of MSDs on their daily performance. MSDs were significantly associated with age, years of professional experience, and carrying heavy loads (p < 0.001), whereas daily working hours were not significantly associated (p = 0.220). Multivariate logistic regression confirmed the independent association of age over 35, over 5 years of professional experience, and carrying heavy loads with the occurrence of MSDs. Musculoskeletal disorders are a serious and common problem among professional motorcyclists in Kinshasa. Older age, longer professional experience, and carrying heavy loads are important associated factors. Ergonomic prevention measures and improved working conditions are necessary to improve the working conditions of motorcyclists.
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