[Atypical entrapment syndrome of the distal suprascapular nerve of the incisura scapulae. Case report and overview of the literature].
Entrapment neuropathy of the suprascapular nerve is a rare disease of the peripheral nerve system. Of Mumenthaler's 3465 patients with peripheral nerve lesions, only 15 had suprascapular nerve damage. Since Thompson's and Kopell's first description of suprascapular entrapment neuropathy in 1959, some reports have been published. In the majority of cases the lesion is normally located in the suprascapular notch with clinical involvement of the supra- and infraspinatus muscle. Here we report on an uncommon lesion of the suprascapular nerve with sparing of the supraspinatus muscle in a volleyball player. The current literature will be reviewed. The anatomical basis, examination, differential diagnosis and therapy of this type of entrapment neuropathy will be discussed.