Glenohumeral joint instability in normal adolescents. Incidence and significance

J Bone Joint Surg Br. 1991 May;73(3):406-8. doi: 10.1302/0301-620X.73B3.1670438.


One hundred and fifty asymptomatic shoulders in 75 schoolchildren were studied. The shoulders were tested for instability and a hyperextensometer was used to assess joint laxity. Signs of instability were found in 57% of the shoulders in boys and 48% in girls; the commonest sign was a positive posterior drawer test which was found in 63 shoulders. A positive sulcus sign was found in 17 shoulders and 17 subjects had signs of multidirectional instability. General joint laxity was not a feature of subjects whose shoulders had positive instability signs.

MeSH terms

  • Adolescent
  • Biomechanical Phenomena
  • Female
  • Humans
  • Incidence
  • Joint Instability / diagnosis
  • Joint Instability / epidemiology
  • Joint Instability / physiopathology*
  • Male
  • Sex Distribution
  • Shoulder Joint / physiology*