title: Serratus anterior paralysis as an occupational injury in scaffolders: two case reports.
abstract: BACKGROUND
  Shoulder complaints in scaffolders are very common and may result in permanent disability.
  
  
  METHODS
  We present two case reports of patients who developed acute shoulder complaints. After lifting weights up to 50 kg both patients suffered an isolated lesion of the long thoracic nerve resulting in serratus anterior paralysis.
  
  
  RESULTS
  Physical signs are unilateral winging of the scapula and loss of strength in the arm. A combined effect of pressure and stretching of the nerve resulted in an occupational injury with a different prognosis of reversibility in both patients.
  
  
  CONCLUSIONS
  Shoulder pads in the overall and limiting the weight to carry may prevent future injuries.
authors.affiliation: Department of Public Health, Erasmus University Rotterdam, The Netherlands. elders@mgz.fgg.eur.nl
authors.forename: L A
authors.initials: LA
authors.lastname: Elders
authors.forename: F G
authors.initials: FG
authors.lastname: Van der Meché
authors.forename: A
authors.initials: A
authors.lastname: Burdorf
mesh_terms: D000293:Adolescent; D000328:Adult; D004185:Disability Evaluation; D004576:Electromyography; D005500:Follow-Up Studies; D006801:Humans; D017770:Lifting / Q000009:adverse effects*; D008297:Male; D009784:Occupational Diseases / Q000175:diagnosis* / Q000209:etiology; D010243:Paralysis / Q000175:diagnosis* / Q000209:etiology; D010369:Pectoralis Muscles / Q000294:innervation / Q000503:physiopathology; D010808:Physical Examination; D020069:Shoulder Pain / Q000175:diagnosis / Q000209:etiology*; D013900:Thoracic Nerves / Q000293:injuries*