A 34 Y/O F, who delivered her first child 2 months ago, c/o R wrist pain x3 weeks. The pain is localized over the radial styloid and is exacerbated when she lifts her baby. O/E: There is tenderness to palpation over the first dorsal compartment. No swelling or erythema is noted. Which of the following physical examination maneuvers is most specific for confirming the suspected diagnosis?

72 Y/O F trips and falls onto her outstretched right hand. She presents to the ED with severe wrist pain, swelling, and a visible deformity. O/E: Marked dorsal displacement of the distal radius, tenderness over the radiocarpal joint, and limited range of motion. Distal neurovascular status is intact. An X-ray confirms a transverse fracture of the distal radius with dorsal angulation. What is the most likely eponym for this fracture pattern?

A 34 Y/O M is brought to the ED after a fall onto his outstretched R arm. He c/o severe arm pain and inability to "lift his hand up." O/E, there is marked tenderness and deformity over the mid-shaft of his humerus. Neurological exam reveals weakness of wrist and finger extension (wrist drop) and ↓ sensation over the dorsal first web space. An X-ray confirms a closed, displaced fracture of the humeral shaft. Injury to which of the following nerves is the most likely cause of this patient's neurological findings?

A 35 Y/O M graphic designer presents with a 6-week Hx of intermittent R wrist pain and tingling in his thumb and index finger. Symptoms are exacerbated after long hours of using a computer mouse and frequently awaken him from sleep. O/E, sensation is mildly reduced in the median nerve distribution. There is no thenar atrophy. His symptoms are reproduced by wrist flexion (Phalen's test). What is the most appropriate initial management for this patient?

A 28 Y/O M sustains a closed, comminuted fracture of the radial shaft in a motor vehicle accident. Following successful closed reduction and splinting, he is admitted for observation. Four hours later, he c/o escalating 10/10 pain in his forearm, which is poorly responsive to IV opioids. O/E, the forearm is visibly swollen and feels tense and "woody" on palpation. He has excruciating pain on passive extension of his fingers. A weak radial pulse is palpable. Sensation to light touch is diminished over the dorsum of the hand. What is the most likely diagnosis?

A 6 Y/O M is brought to the ED after falling from a playground slide onto his outstretched left hand. O/E, there is marked swelling and tenderness over the lateral aspect of his left elbow. He has a restricted range of motion 2° to pain. Distal neurovascular examination is intact. An X-ray of the elbow reveals a Salter-Harris IV fracture of the lateral condyle with 3 mm of displacement, but the articular surface appears congruent. What is the most appropriate initial management for this patient?

An 8 Y/O F presents to the clinic 1 day after falling on her right arm. Her parents thought it was a sprain, but the pain has worsened. O/E, there is significant tenderness and swelling over the distal humerus. Sensation to light touch is intact in all nerve distributions, and a weak radial pulse is palpable. During the neurological exam, the patient is specifically asked to make an "OK" sign with her thumb and index finger. She is unable to flex the distal joint of her index finger and the interphalangeal joint of her thumb, resulting in a "pinch" gesture instead. This specific examination finding is most suggestive of an injury to which nerve?

A 45 Y/O F presents after falling down a flight of stairs, landing on her left side. She has isolated left arm pain. O/E: Significant angular deformity and ecchymosis of the mid-upper arm. The skin is intact. A comprehensive neurovascular exam is normal. Ix: X-ray reveals a closed, transverse fracture of the humeral diaphysis with 35 degrees of varus angulation and 4 cm of shortening. What is the most appropriate definitive management?

A 45 Y/O M with a known Hx of chronic lower back pain presents to the ED c/o acute worsening of pain radiating bilaterally down his legs x12 hrs. He also reports new-onset numbness in his groin and difficulty initiating urination. O/E: BP 140/85, HR 92, afebrile. Neurological exam reveals 3/5 power in ankle dorsiflexion bilaterally, ↓ sensation in the perineal "saddle" area, and ↓ anal tone on DRE. Patellar and Achilles reflexes are absent. What is the next best investigation to confirm the suspected diagnosis?