New Physicians Joining OSI in September

Asif Jillani, M.D.

Dr. Asif Jillani is board certified in Physical Medicine and Rehabilitation and Pain Medicine

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Adam Rivadeneyra, M.D.

Dr. Riva is a Board Certified Primary Care Sports Medicine physician with a background in Family Medicine specializing in non-surgical Orthopaedics and Sports Medicine

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Welcome to Orthopaedic Specialty Institute

Orthopaedic Specialty Institute is one of Southern California’s premier orthopaedic medical groups located in Orange County, California.

OSI offers a broad line of professional orthopedic services including Spine Surgery, Total Joint Replacement, Sports Medicine, Foot and Ankle, Hand and Upper Extremity and General Orthopedics. In addition to the physician's clinic, the center offers physical and hand therapy as well as digital X-ray and MRI.

Research Foundation of Southern California

The Orthopaedic Education and Research Foundation of Southern California (or OSI Foundation) is dedicated to providing educational forums to the public, allied health providers and physicians..

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More educational videos from

Anterior Hip

Direct Total Anterior Hip Replacement by Dr Steven Barnett from CCJR meeting in Las Vegas

Latest News


The Cleveland Clinic announced that they and five additional orthopedic centers of excellence across the nation will begin to contract directly with employers to provide superior orthopedic care at bundled rates for hip, knee and spine surgeries. This new orthopedic venture will be known as the National Orthopedic & Spine Alliance.

Hoag Orthopedic InstituteSuperior Orthopaedics