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[Modelling metallic bars in an orthopaedic laboratory: postural and biomechanical analysis]
F Draicchio1, A Miccio, S Mari
1INAIL - Settore Ricerca, Dipartimento di Medicina del Lavoro - Laboratorio di Fisiologia, Ergonomia, Postura e Movimento - Monte Porzio Catone, Roma, Italy. f.draicchio@inail.it
Giornale Italiano Di Medicina Del Lavoro Ed Ergonomia
|February 15, 2013
Summary
This study used surface electromyography to evaluate upper limb biomechanical load in orthopedic prosthesis manufacturing. Titanium bars and a 110 cm workstation height increased shoulder muscle exertion.
Area of Science:
- Occupational biomechanics
- Ergonomics
- Biomedical engineering
Context:
- Manufacturing orthopedic prostheses involves repetitive upper limb tasks.
- Assessing biomechanical load is crucial for preventing work-related musculoskeletal disorders.
- Objective measurement techniques like surface electromyography (sEMG) provide reliable data.
Purpose:
- To objectively assess the upper limb biomechanical load in orthopedic prosthesis manufacturing workers.
- To compare the effects of different workstation heights (105 cm vs. 110 cm) on muscle activity.
- To investigate the influence of material type (aluminum, steel, titanium) on biomechanical load during bar modeling.
Summary:
- Surface electromyography revealed significant differences in upper limb muscle activation based on material and workstation height.
- Working with titanium bars resulted in distinct muscle activation patterns compared to aluminum and steel.
- A workstation height of 110 cm led to increased shoulder muscle exertion compared to 105 cm.
Impact:
- Findings provide crucial data for optimizing workstation design and material selection in orthopedic prosthesis manufacturing.
- This research can inform ergonomic interventions to reduce biomechanical load and prevent injuries.
- Objective biomechanical data supports evidence-based recommendations for improving worker health and safety.
