In House M.D., what is the name of House’s injured leg muscle?

House’s injured leg muscle in House M.D. is the quadriceps.

House suffers an infarction in his right quadriceps muscle, causing permanent damage and chronic pain. The injury is a crucial part of his backstory because it explains his limp, his use of a cane, and his dependence on pain medication.

The infarction occurred before the series begins. House initially receives treatment that leaves him with severe disability, and he later undergoes surgery intended to preserve the leg. The result is a lasting injury rather than a complete recovery, so pain remains a major part of his daily life and behavior.

The quadriceps is a group of four muscles at the front of the thigh that helps extend the knee. It is not the calf or hamstring, two areas sometimes confused with House’s injury. The medical detail also connects the character’s physical condition to the show’s central theme: diagnosis can explain damage without restoring what has been lost.