Palmer & Dorsal Hand Published on August 31, 2020 by ehudspeth Hand & Upper Limb Joints During the first day of anatomy dissection, Dr. Throckmorton cut the tip of his finger requiring stitches. Which of the following explains why it bled like the dickens? There are lots of recurrent arteries in the hand He nicked his superficial palmar arch He nicked his deep palmar arch The capillary beds have more blood in them There are more proprioceptors in the fingertips Which of the following is the least stable joint? Glenohumeral joint Sternoclavicular joint Acromioclavicular joint Humeroradial joint Proximal radioulnar joint A patient presents to the ED after a game of intramural flag football and is unable to extend their DIP joint on their right 2nd finger. During their physical exam you also notice that they have blood visible beneath their nailbed. Which of the following injuries did they most likely sustain? Extensor tendon rupture Avulsion injury of the distal manual phalanx Avulsion injury of the distal pedal phalanx Dislocation Sesamoid formation An inability to abduct the thumb would result from which of the following? Damage to the deep ulnar nerve Damage to the superficial branch of the radial nerve Damage to the recurrent branch of the median nerve Damage to the median nerve Damage to the ulnar nerve A 12 year old male patient presents to the emergency department after following an ATV accident. Imaging confirms avulsion of the medial epicondyle of the humerus. The patient complains of paresthesia in the fifth digit and the medial half of the fourth digit. Which action of the thumb is most likely weakened or absent in this patient? Adduction Abduction Extension Flexion None of the above While cheering, Kali is dropped from a stunt landing directly on her shoulder, which of the following is the MOST LIKELY injury? Tear of her glenohumeral ligament Tear of her coracohumeral ligament Fracture of her humeral diaphysis Tear of her transverse humeral ligament Dislocation of her shoulder A patient presents to your clinic after a recent wrist injury and you notice they are able to hyper-abduct their wrist. What structures are likely to be involved in this injury? Posterior radiocarpal and anterior joint capsule Radial collateral and lateral part of joint capsule Bony apposition between styloid process of radius and scaphoid Bony apposition between radius and carpal bones Anterior radiocarpal and anterior part of joint capsule Time is Up!