Deltoid
Note that the deltoid is responsible for abduction beyond roughly 70 degrees.
What our notes say
- Note that the deltoid is responsible for abduction beyond roughly 70 degrees. (muscuskeletal exam — Past Paper Questions & Answers)
- Identify and palpate each bony surface landmark: acromion, clavicle, scapula, deltoid muscle, supraspinatus region, infraspinatus region, teres minor region. (muscuskeletal exam — Past Paper Questions & Answers)
- A deltoid biopsy shows scattered inflammatory infiltrates with focal necrosis of the muscle fibers. (Immunopathology complete mcqs — Past Paper Questions & Answers)
- Clinical result of axillary nerve injury: deltoid paralysis and "regimental badge" sensory loss (Aponeurosis — Anatomy Question Bank)
- Part 2: thoracoacromial artery (clavicular, deltoid, pectoral, acromial branches); lateral thoracic artery (Master First-Year Anatomy: Must-Know Essays & Key Concepts)
Study material on Deltoid
Images
Practice questions on Deltoid
A 20-year-old woman has 6 months of symmetrical proximal muscle weakness. Deltoid biopsy shows inflammatory infiltrates and focal myofiber necrosis. ANA and anti-Mi-2 are positive; Jo-1 is negative. Most likely additional finding?
- Heart failure
- Malabsorption
- Peripheral neuropathy
- Skin rash
Answer: D. Anti-Mi-2 positive + proximal muscle weakness + inflammatory myopathy = dermatomyositis. The violaceous heliotrope skin rash is a characteristic feature, often subtle and limited to the face. ---