II. Indications
- Knee Trauma
- Significant joint effusion
- No prior knee disease diagnosis
- Failed Osteoarthritis conservative therapy
III. Views
IV. Findings
- Joint space narrowing
- Medial tibiofemoral joint space narrowing
- Patellofemoral joint space narrowing
- Lateral joint space narrowing to lesser extent
- New subchondral bone formation
- Tibia lateral subluxation
- Osteophyte formation
- Medial osteophytes are most prominent initially
V. Grading: Kellgren-Lawrence Grading Systems for Knee Osteoarthritis
- Grade 0: No XRay Osteoarthritis findings
- Grade 1: Possible Osteoarthritis, but no significant joint space narrowing
- Grade 2: Definite Osteoarthritis with possible joint space narrowing
- Grade 3: Moderate osteophytes, definite joint space narrowing, subchondral sclerosis, possible bone end deformity
- Grade 4: Large osteophytes, marked joint space narrowing, severe sclerosis, definite bone end deformity
- Wing (2021) Skeletal Radiol 50(2):399-405 +PMID: 32780155 [PubMed]
VI. References
- Brower (1998) Arthritis Black and White, Saunders
- Klippel (1997) Primer Rheumatic Diseases, AF
- Boegard (1999) Skeletal Radiol 28:605-15 [PubMed]
- Peterson (1997) Ann Rheum Dis 56:493-6 [PubMed]
- Swagerty (2001) Am Fam Physician 64(2):279-86 [PubMed]