Knee A to Z

OS is an abbreviation for 'orthopaedic surgeon'.

Abbreviation of 'Osgood Schlatter's disorder' or "Osgood-Schlatter's disease', which is an 'overuse' condition where the attachment of the patellar tendon to the tibia bone becomes stressed.

Osgood Schlatter's disease (or Osgood-Schlatter's disorder) is an 'overuse' condition, where the attachment of the patellar tendon to the tibia bone becomes stressed.

An ossicle is a very small bone.

Osteitis is infection of the bone.

Osteoarthritis of the knee is the most common form of knee arthritis.

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.

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 (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.

An osteochondral defect occurs when a chunk of joint cartilage is lost, leaving a crater that extends into the underlying bone.