Suprascapular neuropathy introduction Suprascapular nerve entrapment syndrome (SNES) is an uncommon condition that is often overlooked when evaluating shoulder pain and weakness.
Suprascapular neuropathy introduction Suprascapular nerve entrapment syndrome (SNES) is an uncommon condition that is often overlooked when evaluating shoulder pain and weakness. There are certain high risk populations that sports medicine providers will likely experience. An increased awareness of this condition may help ensure a proper diagnosis is not missed.
The suprascapular nerve (SN) originates from the superior trunk of the brachial plexus, where it passes deep to the trapezius toward the scapula to innervate the supraspinatus and infraspinatus muscles. It carries motor nerve fibers to these muscles and sensory nerve fibers from several structures in the posterolateral shoulder. The SN is vulnerable to injury at many locations along its path.
The SN is particularly susceptible to entrapment at the suprascapular notch and the spinoglenoid notch. Etiologies of SNES can be described as compressive or traction lesions. Traction lesions occur in the setting of ligament tension, hypertrophy, or calcification due to rotator cuff tears, overuse in overhead athletes or overhead laborers.
Traction injuries can also be exacerbated or directly caused by anatomical variants of the suprascapular notch, spinoglenoid notch, and accompanying ligaments. Compression injuries occur via mass effect, most commonly from ganglion cysts, soft tissue masses, vascular abnormalities, and malignancies. The relationship between overhead activities and SNES has been documented in the literature.
Sports such as volleyball, tennis, and swimming increase the risk of dynamic entrapment caused by repetitive compression and subsequent swelling, fibrosis, and demyelination of the SN. Protraction and retraction of the scapula during the throwing motion puts significant pressure on the SN. Volleyball spikes and overhead serves can cause cumulative microtrauma and neuropathy of the SN.
If you are experiencing symptoms that may be related to suprascapular neuropathy, it is important to see a sports medicine physician. Early evaluation and treatment typically lead to better outcomes. Do not ignore pain or symptoms that are limiting your activity.
*This article is for educational purposes only and does not substitute for professional medical advice. Always consult a qualified healthcare provider.*
Connect with a doctor, physical therapist, or imaging center near you.
Find a Provider Near You โ