Aman who doesn't exercise often accepts his friend's invitation to a pickup basketball game. when attempting a jump shot, he falls to the ground in pain, grasping at the calf of his leg. there is an enormous bulge in his leg immediately below the knee, and he is unable to plantar flex that foot. most likely he has injured his and the bulge is

Most likely he has injured his Calcaneal tendon and the bulge is triceps surae or calf muscle.

Explanation:

The calcaneal tendon is the thickest tendon, which is present at the back of the lower leg and begins at the middle of the calf. It is covered with skin and fascia and connects the bones with the muscles.

The calf muscles or the triceps surae, are the muscles present in the calf of the leg.The calf muscles act via the tendon and cause flexion of the knee and the ankle.

While exercising, an overuse of the calcaneal tendon, can result in pulling of the calf muscles from the Achilles tendon. Thus causing a tear in the calf muscle, which appears like a bulge.

answer:

call 911 ofcourse if at all possible

i know it happens all the time :