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  • Title: [Investigation in a slaughter house and processing of pork meat. Repetitive task work and osteo-articular and musculotendinous pathology of the upper limbs].
    Author: Rovetta S, Bosco MG, Tornese C, Rischia G, Emili A, Morino S.
    Journal: Med Lav; 1996; 87(6):693-703. PubMed ID: 9148126.
    Abstract:
    The investigation concerned 47 workers (43 males and 4 females), whose average age was 41.5 years and average length of service 12 years. The aim of the study was to quantify the presence in an abattoir and meat processing plant of risk factors represented by repetitive movements requiring the use of force, and to describe the work-related musculo-skeletal disorders (WMSDs) of the upper limbs found in a group of workers exposed to such risk factors. The work was found to feature high speeds and very particular operations which, for most of the workers, required highly repetitive actions often associated with the use of force. Almost all the tasks had duration cycles of less than 30 seconds and a medium-high rate of actions/minute (from 20 to 60), with peak rates reached in the boning operations; the postural involvement was also considerable, particularly for the right wrist. The amount of force employed-calculated as a percentage of the Maximum Voluntary Contraction-averaged 50%. With very few exceptions, there were no significant pauses during the cycle. The group displayed a high prevalence of pain and paraesthesia and joint disorders, particularly in the over 35 age groups; statistically significant differences emerged with respect to the data from a matched population sample given the same anamnestic and clinical protocol. The group also exhibited significantly different Carpal Tunnel Syndromes with respect to the control population: 7 right-hand CTSs and five left-hand. CTS affected two out of every three women aged over 35 and 3 out of every 23 men over 35. The authors discuss the results in the light of previous studies and of the definition of CTS. The study concludes that investigating and preventing WMSDs in the meat processing industry is a justified, albeit very difficult, task whilst the protection afforded by current legislation appears to be most inadequate.
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