A 46-year-old man is brought to the emergency department after sustaining an injury to the dominant right wrist. Examination shows a 6-cm-diameter wound on the dorsal surface of the wrist. Significant contamination of the wound and segmental tendon loss are noted. Neurovascular status is intact. The patient is unable to extend the index, long, and ring fingers. Which of the following is the most important next step in management? 

A 25-year-old man is scheduled to undergo muscle transfer with the gracilis muscle to restore finger flexion. To optimize function, the muscle should be inset under which of the following? 

A 35-year-old man undergoes coverage of a soft-tissue defect on the posterior right elbow with a reverse lateral arm flap. He does not have a history of serious illness and has never smoked cigarettes. Vascular examination shows no abnormalities. Arterial blood to the flap is provided primarily by which of the following arteries? 

A 52-year-old man is brought to the emergency department after sustaining injuries in a motor vehicle collision. Physical examination shows a traumatic degloving injury to the dorsum of the right hand with exposed, intact extensor tendons. Reconstruction with a fascial free flap and full-thickness skin grafting are planned. Which of the following arteries supplies blood to the most appropriate choice of flap? 

A 55-year-old woman is scheduled to undergo surgery for soft-tissue coverage of an open joint elbow wound. The vascular pedicle of the flap in the photograph shown passes between which of the following tendons?