J Korean Acad Rehabil Med.  2002 Dec;26(6):819-821.

Suprascapular Nerve Injury Restricted to the Infraspinatus Muscle by a Ganglion Cyst: A case report

• Shim DS
• Rah UW
• Moon HW
• Lee IY
• Eom JH

Abstract

Suprascapular nerve injury restricted to the infraspinatus muscle is an uncommon condition. We present a 29 year-old man who complained of right shoulder pain and weakness for 8 months. Physical examination revealed atrophy of right infraspinatus muscle and T2 weighted MRI of the right shoulder revealed a mass with homogeneous high intensity at the spinoglenoid notch and atrophy of right infraspinatus muscle. EMG study revealed abnormal spontaneous activities and reduced recruitment pattern of motor units in right infraspinatus muscle. Symptoms improved after the excision of a mass which was a ganglion cyst by pathologic examination. We were reporting a case of suprascapular nerve injury restricted to the infraspinatus muscle.

Keyword

Suprascapular nerve; Ganglion cyst; Infraspinatus muscle; Spinoglenoid notch

MeSH Terms

Adult
Atrophy
Ganglion Cysts*
Humans
Magnetic Resonance Imaging
Physical Examination
Shoulder
Shoulder Pain