St. Joseph Hospital in Orange is under state investigation for mistakenly doing knee-repair surgery on a patient's good knee, the third "wrong-site" procedure to occur at Orange County's largest hospital since January 2006. The Feb. 15 operation was intended to repair a patient's left knee but was "inadvertently performed on the right knee," according to a prepared statement released by the hospital in response to questions from The Times. Citing privacy concerns, the hospital declined to identify the patient or release other details.
3 Wrong Knee surgeries in 2 years....BD
Hospital in Orange probed for medical mix-up - Los Angeles Times