What fictional medical condition affects Gregory House’s leg in House M.D.?

Gregory House’s leg was damaged by an infarction of the quadriceps muscle in House M.D. The infarction cut off blood supply to muscle tissue, causing severe damage and leaving House with chronic pain and a limp.

House explains that the injury occurred when a blood clot blocked circulation in his leg. Doctors initially treated the problem incorrectly, and House later chose a procedure that preserved the leg but left substantial muscle damage. The resulting disability becomes one of the character’s defining physical and psychological traits.

House uses a cane and relies on pain medication, especially Vicodin, to manage his chronic pain. His dependence on the drug is a recurring storyline and affects his judgment, relationships, and employment. The show connects his pain with his abrasive behavior, although it does not present the medical consequences as a simple explanation for every aspect of his personality.

The injury is often loosely described as a “leg infarction,” but the more specific condition is infarction of the quadriceps muscle. It was not presented as a fractured femur, torn Achilles tendon, or spinal cord injury.