O
OS
OS is an abbreviation for 'orthopaedic surgeon'.
OSD
Abbreviation of 'Osgood Schlatter's disorder'.
Osgood Schlatter's disease
Osgood Schlatter's disease is an 'overuse' condition, where the attachment of the patellar tendon to the tibia bone becomes stressed.
Ossicle
An ossicle is a very small bone.
Osteitis
Osteitis is infection of the bone.
Osteoarthritis
Osteoarthritis of the knee is the most common form of knee arthritis. Page updated January 2024 by Dr Sheila Strover (Clinical Editor)
Osteoarticular transfer system
The Osteoarticular Transfer System is surgical procedure to core out a damaged bit of joint cartilage and replace it with a healthy bit from a donor.
Osteochondral allograft
An osteochondral allograft is transplant of a plug of bone and cartilage from a donor into a prepared matching defect in the patient.
Osteochondral Autologous Transfer System
Osteochondral Autologous Transfer System (OATS) is a surgical procedure where a plug of bone and cartilage is cored from a relatively unimportant area of knee cartilage and used to replace damage to an important area.
Osteochondral defect
An osteochondral defect occurs when a chunk of joint cartilage is lost, leaving a crater that extends into the underlying bone. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)