Arm and Cubital Fossa Flashcards Preview

MSI Module II > Arm and Cubital Fossa > Flashcards

Flashcards in Arm and Cubital Fossa Deck (10):

Three major superficial veins of the upper extremity

Cephalic vein

Basilic vein

Median cubital vein

  • Often used for taking blood


Muscles in anterior compartment of arm

Biceps brachii




Innervation by musculocutaneous nerve


Muscles in posterior compartment of arm

Triceps brachii



Innervation by radial nerve


Functions of each head of biceps brachii at glenohumeral and elbow joints

  • Both heads cause forearm flexion at elbow joint
  • Both heads cause shoulder flexion at the glenohumeral joint
  • The long head (not short head) is involved in abduction at glenohumeral joint


Role of biceps brachii in pronation and supination of forearm

Insertion at radial tuberosity allows it to cause supination of foreare at the proximal radio-ulnar joint (not involved in pronation)


Courses of median, ulnar, and radial nerves around the elbow


Biceps tendonitis

  • The tendon of the long head of the biceps brachii muscle lies in intertubercular groove and has a synovial membrane around it
  • Movement of the tendon in the synovial joint can cause inflammation
  • Presents with pain and tenderness over anterior shoulder
  • Can progress to tendon rupture


Popeye deformity

Rupture of tendon on long head of biceps brachii causes the muscle belly to retract in the arm causing the Popeye deformity


Student's bursitis

Repeated pressure on elbow can cause inflammation of teh subcutaneous bursa which is found superficial to the olecranon of the ulna in the subcutaneous tissue


Elbow fractures expected in children versus adults

Common mechanism for albow fracture is falling on an outstretched hand

  • Children recieve supracondylar fractures of the distal humerus
  • Adults more commonly receive wrist fractures