made Chase a paraplegic

Can you elaborate on this one?

This is what Wikipedia says as a plot summary, which doesn’t really support your interpretation:

As Chase attempts to biopsy the patient’s rash, the patient suffers another psychotic episode and stabs Chase with a scalpel, lacerating his heart. Chase survives surgery but is left paralyzed. House concludes that the paralysis is caused by a blood clot. Chase regains feeling when surgery is performed to remove the clot that is pressing on his spine, but he faces extensive physical therapy.