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An injury to any one of these systems can lead to shoulder pain and dysfunction. Aiding the deltoid to its heavy lifting is a group of four muscles whose tendons join together in a cuff to form the rotator cuff.

The motion of the shoulder is powered by several muscles the largest and most powerful is the deltoid. Shoulder stability is provided by the labrum which is like a rubber “O” ring that goes around the socket and deepens and provides a physical restraint similar to a speed bump. Both are lined by a thin layer of articular cartilage that help the shoulder move freely without friction. The socket (glenoid) is rather flat and has a larger radius than the ball (humeral head). The bony architecture of the shoulder is that of a ball and socket joint. Four structures contribute to this function – bone, cartilage, tendon, and ligaments. It straddles a razors thin edge between stability and instability – which is what allows it to have such an incredible range of motion. Mount Sinai Morningside and Mount Sinai WestThe shoulder is one of the most complex joints with the greatest range of motion of any joint in the human body.Language English Position ASSOCIATE PROFESSOR | Orthopedics Hospital Affiliations Seneviratne received additional training in complex shoulder problems as well as articular cartilage injuries in his traveling fellowship to Harvard University, Rush University and the San Antonio Orthopedic Center. He works in New York, NY and 4 other locations and specializes in Orthopedic Surgery and Sports Medicine. He received the Lewis Clark Wagner Award for Excellence in Orthopedic Research during his orthopedic residency at the Hospital for Special Surgery. He received his fellowship in sports medicine from Lenox Hill Hospital where he participated in the care of athletes from the New York Jets, New York Islanders and Hofstra University athletic teams. Seneviratne graduated from the New York Medical College in 1995. He received his undergraduate degree from the University of California and his MD from New York Medical College. Seneviratne grew up in southern California. His academic work has been presented nationally and internationally at several specialty meetings.īorn in Sri Lanka, Dr. Seneviratne has authored several peer-reviewed, scientific articles and book chapters.

He also specializes in robotic partial and total knee replacements.ĭr. He investigates and uses cell based therapies/biologics in carefully selected patients during rotator cuff surgery to promote the possibility of a quicker and more durable healing and recovery. Seneviratne extracts bone marrow from Seamus's pelvis, spins it down to concentrate the stem cells, and then goes about reattaching the torn rotator cuff tendon to the bone. He is on the forefront of utilizing advanced open and arthroscopic. SLMANA President Dr Aruna Milinda Seneviratne said several generations of Sri Lankan-American doctors have worked diligently together to raise funds for. He utilizes advanced open and arthroscopic surgical techniques to restore damaged joints, ligaments, and bones. Seneviratne specializes in shoulder, knee, and all sports-related injuries/disorders. Aruna Seneviratne is a fellowship-trained Orthopaedic Surgeon who specializes in disorders of the shoulder, knee, and all sports-related injuries.