AN10.1-13 | Axilla, Shoulder and Scapular region — Practice Quiz

The apex of the axilla (cervicoaxillary canal) is bounded by the clavicle anteriorly, the scapula posteriorly, and which structure medially?

The axillary artery is divided into three parts by the pectoralis minor muscle. How many branches arise from the third part?

During breast cancer surgery, the surgeon is concerned about metastasis to axillary lymph nodes. Which group of axillary lymph nodes receives lymph from the breast FIRST?

During axillary lymph node clearance for breast cancer, the surgeon accidentally damages a nerve running on the medial wall of the axilla along the serratus anterior. The patient later cannot raise her arm above her head and shows a 'winged scapula'. Which nerve was damaged?

The brachial plexus is formed by the ventral rami of which spinal nerve roots?

The three trunks of the brachial plexus are formed by specific combinations of roots. The upper trunk is formed by the union of:

A newborn delivered after difficult labour presents with the right arm hanging limply at the side, medially rotated, elbow extended, and forearm pronated. The hand grip is normal. This clinical picture is most consistent with injury to:

A patient who fell from a height and grabbed a branch presents with a claw hand deformity, loss of grip strength, sensory loss on the medial side of the hand, and ptosis with miosis on the same side. The most likely injury is to:

The rotator cuff muscles are remembered by the mnemonic SITS. Which of the following is the correct order from superior to posterior to anterior?

A 55-year-old patient presents with shoulder pain and a 'painful arc' — pain specifically between 60° and 120° of arm abduction. Which rotator cuff muscle is most likely torn?

The shoulder joint is the most commonly dislocated joint in the body. What is the most common direction of dislocation?

A 70-year-old woman falls on her outstretched hand and fractures the surgical neck of the humerus. On examination, she cannot abduct her arm beyond 15° and has loss of sensation over a patch of skin on the lateral aspect of the upper arm (regimental badge area). Which nerve is most likely injured?