Lilly, a 22-year-old full time bank worker and casual weeken…
Lilly, a 22-year-old full time bank worker and casual weekend soccer player, presents to the clinic with an ankle injury she sustained earlier today, following what she described as a “mild roll” of the ankle. She used crutches she borrowed from a friend because she said she can’t bear any weight on the ankle without significant pain. She said the pain began immediately upon the injury. Physical examination findings include moderate swelling, moderate hematoma, moderate joint instability, pain on palpation, ROM limited, and a positive anterior drawer test. Which of the following does the primary care provider suspect?