Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. Crenshaw, Campbell’s Operative Orthopaedics, 8th ed, p2019)
Bilateral primary osteoarthritis of knee
Unilateral primary osteoarthritis of knee
Unilateral primary osteoarthritis, unspecified knee
Unilateral primary osteoarthritis, right knee
Unilateral primary osteoarthritis, left knee
Bilateral post-traumatic osteoarthritis of knee
Unilateral post-traumatic osteoarthritis of knee
Unilateral post-traumatic osteoarthritis, unspecified knee
Unilateral post-traumatic osteoarthritis, right knee
Unilateral post-traumatic osteoarthritis, left knee
Other bilateral secondary osteoarthritis of knee
Other unilateral secondary osteoarthritis of knee
Osteoarthritis of knee, unspecified