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Quadrilateral space syndrome: a case study and review of the literature
  1. W T Hoskins1,
  2. H P Pollard1,
  3. A J McDonald2
  1. 1Department of Health and Chiropractic, Macquarie University, NSW 2109, Australia
  2. 2South Sydney Sports Medicine, Kensington, NSW 2033, Australia
  1. Correspondence to:
 Mr Hoskins
 Department of Health and Chiropractic, Macquarie University, NSW 2109, Australia;


Quadrilateral space syndrome is an uncommon injury. The true prevalence is unknown because of a lack of literature and possible misdiagnosis. Prevalence may increase as knowledge of the syndrome increases. The case is presented of a recreational triathlete who had a spontaneous onset of quadrilateral space syndrome. The diagnosis was made by physical examination and confirmed with magnetic resonance imaging. A conservative, yet aggressive rehabilitation programme resulted in functional improvement within six weeks. Results have been maintained for eight weeks.

  • MRI, magnetic resonance imaging
  • PCHA, posterior humeral circumflex artery
  • QS, quadrilateral space
  • QSS, quadrilateral space syndrome
  • axillary nerve
  • peripheral neuropathy
  • quadrilateral space syndrome

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  • Competing interests: none declared

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