We report a case of persisting suprascapular nerve palsy after surgery unde
r general anaesthesia of short duration in a conventional position. Surgica
l exploration, eight months later, showed a suprascapular notch narrowed by
a hypertrophied and calcified superior transverse ligament. Such a lesion
and the practice of volley-ball by the patient are in favour of a pre-exist
ing infraclinical neuropathy. (C) 1999 Elsevier, Paris.