A comminuted proximal humerus fracture is treated with a shoulder hemiarthroplasty as shown in Figure A. The superior border of the pectoralis major tendon can be used to determine accurate restoration of which of the following?

A 53-year-old male laborer presents to his primary care physician with complaints of acute onset of left knee pain. He has had mild episodes of knee pain in the past and is two years status post a left partial medial meniscectomy. He has had mild relief with the use of anti-inflammatories. His past medical history is significant only for hyperparathyroidism and mild hypertension. He denies any fevers or chills. His exam reveals a moderate knee effusion and diffuse pain and tenderness with palpation and range of motion. Weightbearing radiographs are shown below. The most likely etiology of the patient's knee pain is characterized by which finding?

A 25-year-old man sustains a left leg injury during a motorcycle accident. A radiograph is provided in Figure A. The fracture is treated in a minimally invasive manner with a lateral locking plate and percutaneous screw fixation. A post-operative radiograph is provided in Figure B. Which of the following complications has been associated with this fixation construct?

A 44-year-old male presents with a 2 month history of posterior shoulder pain. He is noted to have normal forward flexion and abduction strength and isolated weakness on shoulder external rotation. He has slight atrophy of his periscapular area. He has no numbness or paraesthesias. Which pathology would best explain his symptoms?

A 17-year-old ballet dancer presents with 5 months of pain in the posterior aspect of the right lower extremity that is exacerbated with the ballet position shown in Figure A. Her symptoms returned with ballet activity following a 1 month course of full rest, nonsteroidal anti-inflammatory medication, and physical therapy. On physical examination she has no tenderness at the insertion of the achilles tendon at the calcaneus. Radiographs are shown in Figure B and a MRI is shown in Figures C-E. Which of the following options is the most appropriate next step in treatment?

A 39-year-old seasoned professional football player sustains...

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A 65-year-old male presents to the orthopedic clinic with progressive pain in his right knee (Figure A). The knee is aspirated, revealing a chronic PJI. You perform a two-stage revision of the knee with the post-op after the first stage depicted in Figure B and the second stage in Figure C. What is the purpose of the implant indicated by the yellow arrow in Figure C?

A 62-year-old male previously underwent unicompartmental knee arthroplasty (UKA), which has functioned well for him. He now presents with severe pain affecting the contralateral knee with radiographs shown in Figure A. Due to tricompartmental arthritis, he is offered total knee arthroplasty (TKA). He discusses the risks and benefits with his surgeon. Compared to UKA, he is counseled to expect which of the following after his TKA procedure?

What examination findings are most consisten...

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