Orthopedics questions

A 38-year-old male presents to an urgent care facility after a direct impact to his left knee during a fall down a flight of stairs. He reports immediate, sharp pain and significant swelling, making it difficult to bear weight. He also notes a feeling that his knee "gave out" when he tried to stand. On examination, there is marked left knee effusion and ecchymosis over the anterior aspect. Palpation elicits exquisite tenderness directly over the patella. He demonstrates a severely limited active range of motion, particularly an inability to perform a straight leg raise or actively extend the knee against gravity. Neurovascular assessment distal to the injury is intact. Plain radiographs are obtained. Considering the presentation and imaging findings, what is the most likely diagnosis and the most appropriate initial management?

A 27-year-old woman presents to an outpatient clinic for follow-up of persistent hand discomfort after a minor fall while rollerblading a week prior. She reports progressive numbness and tingling in her fingers, which she first noticed about a month ago, now significantly worsening. She works at a coffee shop, and describes her daily tasks as involving repetitive hand movements. Review of systems is notable for a recent weight gain of 25 pounds over the last three months, intermittent nausea, and increased food sensitivity triggering headaches. She also reports increased emotional lability and feeling very down at times, though denies suicidal ideation. Her vital signs are stable: temperature 36.4°C, blood pressure 122/82 mmHg, pulse 85/min, respirations 15/min, and oxygen saturation 98% on room air. Physical examination reveals an obese body habitus. Neurological examination of the upper extremities demonstrates numbness in the radial three and a half digits (thumb, index, middle, and radial half of ring finger) of both hands. A positive Tinel's sign is elicited at the carpal tunnel, and Phalen's test reproduces her symptoms bilaterally. A radiograph of the wrist previously performed was unremarkable for acute bony injury or dislocation. Given this patient's presentation, what is the most likely underlying condition and the initial recommended management strategy?

A 19-year-old avid runner presents to an outpatient clinic with a three-month history of progressive, atraumatic discomfort in her right knee, particularly noticeable during prolonged activities. She reports feeling a 'firm prominence' just above the inner aspect of her knee, which occasionally causes a dull ache and a sensation of impingement with deep knee flexion. She denies any history of trauma, fever, or night sweats. On physical examination, vital signs are stable. Inspection reveals a discrete, non-tender, fixed, hard mass measuring approximately 2 cm in diameter located proximal to the medial femoral condyle. The mass feels continuous with the underlying bone. Range of motion of the right knee is full but deep flexion elicits mild discomfort at the site of the mass. Neurovascular examination of the lower extremity is intact. Plain radiographs of the right knee demonstrate a broad-based, osseous projection arising from the distal femoral metaphysis, pointing away from the joint, with apparent continuity of the medullary cavity and cortex with the parent bone. Considering the presentation and imaging findings, what is the most likely diagnosis and the appropriate initial management strategy?

A 55-year-old female is admitted to an internal medicine ward after being discovered unresponsive on her apartment floor, where she had been lying on her left leg for an unknown duration, estimated to be over 18 hours. She has a documented history of chronic alcohol use disorder and poor social support. Upon arrival, she is somnolent, responding only to noxious stimuli, and exhibits generalized muscle tenderness with significant swelling and firmness of the affected limb. Her vital signs are: heart rate 52 beats/min, temperature 36.8°C, respiratory rate 16 breaths/min, and blood pressure 95/60 mmHg. An initial electrocardiogram reveals bradycardia with prominent, narrow-based, peaked T waves. Considering the patient's presentation and initial findings, what is the most appropriate immediate management strategy and a critical potential complication to monitor for?

A 35-year-old female is brought to the trauma resuscitation bay of a regional trauma center following a high-speed motor vehicle collision where she was an unrestrained passenger. Her initial Glasgow Coma Scale (GCS) is noted as 8. On rapid primary survey, extensive bruising and palpable instability of the pelvic region are identified, alongside significant ecchymosis over her dorsal spine. Her vital signs are: temperature 37.7°C, heart rate 118 beats/min, blood pressure 95/65 mmHg, respiratory rate 22 breaths/min, and oxygen saturation 96% on supplemental oxygen. Intravenous crystalloids are immediately initiated. Initial portable radiographs of the pelvis (Figure A) reveal a complex pelvic ring injury, while the chest radiograph (Figure B) appears unremarkable. Despite ongoing fluid resuscitation, her blood pressure is 92/60 mmHg after 15 minutes, and a focused assessment with sonography for trauma (FAST) exam is negative for intra-abdominal or intra-thoracic free fluid. Her initial laboratory results are pending. Considering these findings, what is the most likely diagnosis and the immediate critical intervention required to stabilize this patient?

A 35-year-old woman presents to an outpatient orthopedic clinic after sustaining a fall during a recreational activity. She describes landing directly on her outstretched hand, immediately experiencing severe pain in her left shoulder and an inability to move her arm. Her past medical history is unremarkable, and she takes no regular medications. On examination, her vital signs are stable: temperature 36.8°C, blood pressure 125/78 mmHg, pulse 88/min, respirations 16/min, and oxygen saturation 98% on room air. Inspection reveals a prominent anterior deltoid deformity on the left, and she is holding her left arm in a position of abduction and external rotation, resisting any attempt at movement. Palpation elicits significant tenderness over the glenohumeral joint. Sensory examination reveals diminished sensation over the lateral aspect of the deltoid region. Radiographic imaging of the left shoulder confirms an anterior glenohumeral dislocation. What is the most appropriate immediate management strategy and the common neurological complication to assess for in this patient?

A 35-year-old woman presents to an outpatient clinic complaining of persistent discomfort in her left knee, two days after an incident during a recreational volleyball game. She recalls an awkward landing after jumping, where another player inadvertently collided with her lower leg on the outer aspect of her left knee. She did not experience any distinct 'pop' or 'snap' at the time of injury, but she felt immediate pain on the inner side of her knee. She is able to bear weight, albeit with a noticeable limp, and reports some swelling and stiffness. On examination, the left knee shows mild effusion. Palpation reveals localized tenderness along the medial joint line and over the medial femoral epicondyle. Range of motion is slightly restricted due to pain, particularly with full flexion. A valgus stress test performed with the knee in 30 degrees of flexion elicits increased laxity with a distinct endpoint compared to the contralateral limb. However, no significant laxity is noted when the valgus stress is applied with the knee in full extension. Anterior and posterior drawer tests, along with the Lachman test, are negative. Lab results are generally within normal limits with a slightly elevated C-reactive protein. Given these findings, what is the most likely diagnosis and the appropriate initial management strategy?

A 30-year-old female is brought into the emergency department by bystanders. She was discovered pinned under heavy debris in a collapsed structure, where she had been trapped for an unknown duration, estimated to be several hours. Her past medical history is notable for schizophrenia and a history of non-adherence to medication, though no active substance use is reported. Upon arrival, she is lethargic, disoriented, and responds only to painful stimuli. Her left lower extremity appears markedly swollen and tense, with palpable muscle compartments. Vitals are HR 52 beats/min, T 36.4°C, RR 16 breaths/min, BP 95/60 mmHg. Capillary refill is sluggish at 4 seconds in the affected limb. Deep tendon reflexes are diminished globally. You obtain an electrocardiogram, which reveals broad QRS complexes and tall, peaked T waves. Based on her presentation and findings, what is the most likely diagnosis and the immediate priority for medical intervention in this patient?

A 65-year-old woman arrives at the emergency department after an awkward stumble, reporting an immediate sharp pain and a distinct "pop" sensation in her left knee. She is now unable to bear weight or straighten her leg. On examination, the left knee appears swollen, with a palpable defect noted superior to the patella. The patella itself is displaced inferiorly, and she exhibits a complete inability to actively extend the knee against gravity. Initial radiographs of the left knee confirm inferior displacement of the patella. Considering the patient's presentation and imaging findings, what is the most appropriate initial management strategy, and what acute complication should be vigilantly monitored?

A 52-year-old woman, who is an avid recreational runner with a history of well-controlled hypothyroidism and a recent corticosteroid injection for an unrelated orthopedic issue, presents to an outpatient clinic with sudden onset of excruciating pain in her right lower calf. She describes feeling a distinct 'pop' sound and sensation during a training run. Upon presentation, she reports difficulty bearing weight and an inability to push off her toes effectively. On physical examination, there is noticeable swelling and ecchymosis over the distal calf, approximately 4 cm proximal to the calcaneal insertion of the Achilles tendon. Palpation elicits significant tenderness in this region, and a palpable gap is noted. Further assessment reveals markedly diminished plantar flexion strength (1/5) on the affected side compared to the contralateral limb (5/5). She is unable to perform a single-leg heel raise. Additionally, a positive Thompson test is elicited. A plain film radiograph of the right ankle is obtained to rule out bony pathology. Considering her presentation, what is the most likely diagnosis and the immediate initial non-surgical management strategy?