Supraspinatus

Anatomy and function

The supraspinatus is supplied mainly by the suprascapular nerve and contributes to shoulder abduction and dynamic glenohumeral stability across a range of arm positions. Abduction is a coordinated action involving the deltoid, other cuff muscles and scapular motion; the common claim that supraspinatus alone “starts” exactly the first 15–30 degrees is an oversimplification. Its subacromial course does not by itself prove an impingement mechanism or make every symptom a supraspinatus injury.

StatPearls · Anatomy, Rotator Cuff

HYROX^® relevance

Wall Balls, Farmers Carry, Sandbag Lunges, Row and Sled Pull load the shoulder in different ways. The supraspinatus may contribute to movement or joint control, but the rulebook specifies task standards rather than muscle requirements. No direct evidence reviewed here establishes cumulative tendon damage from the prescribed repetitions, prevention of inferior subluxation during pulling, direct performance transfer from isolated exercises, or supraspinatus tendinopathy prevalence or cause in HYROX^® athletes.

HYROX^® Singles Rulebook 2026/27 · StatPearls · Anatomy, Rotator Cuff

Exercise evidence

Full-can, empty-can and prone full-can exercises produced similar acute supraspinatus EMG in one fine-wire study; full-can used less deltoid activity. This does not show that scaption is uniquely best, that full-can prevents injury, or that prone Y raises and band pull-aparts specifically transfer to Wall Balls. Exercise may help people with rotator-cuff-related shoulder pain, but evidence is heterogeneous and low certainty. Select a tolerable exercise, range and progressive dose rather than prescribing 2–5 kg, fixed repetitions or every warm-up for everyone.

Reinold et al. · supraspinatus/deltoid EMG study · Tena-Portilla et al. · exercise for rotator-cuff-related shoulder pain

Pain and diagnosis

Pain during elevation, pain while lying on the shoulder and weakness can occur with several shoulder conditions. A painful arc or other single test cannot identify a supraspinatus lesion with certainty. Persistent symptoms, trauma, marked weakness or loss of motion warrant qualified assessment; training logs may describe timing and load but cannot diagnose the involved tissue.

Gismervik et al. · shoulder-test diagnostic meta-analysis

Frequently Asked Questions

Why can the supraspinatus become painful?

Possible contributors include tendon or bursal loading, age-related tissue change, trauma and other shoulder conditions. Anatomy alone does not prove that overhead movement mechanically “pinches” the tendon or that strengthening prevents the problem.

StatPearls · Anatomy, Rotator Cuff · Tena-Portilla et al. · exercise for rotator-cuff-related shoulder pain

How do I know whether the supraspinatus is injured?

Symptoms alone are not specific enough. A clinician combines history, examination and, when indicated, imaging; no single painful arc or strength test establishes the diagnosis.

Gismervik et al. · shoulder-test diagnostic meta-analysis

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Repz training logs can help identify when symptoms correlate with specific training loads.