Outcome of Allogeneic Adult Stem Cell Therapy in Dogs Suffering from Osteoarthritis and Other Joint Defects

Table 1

The Kellgren-Lawrence grading of osteoarthritis.

Grading	Radiographic features	OA
Grade 0	No abnormalities	No features of OA
Grade 1	Minute osteophytes	Doubtful
Grade 2	Definite osteophytes	Minimal
Grade 3	Diminished joint space	Moderate
Grade 4	Greatly diminished joint space + sclerosis of the subchondral bone	Severe

Adapted from Arden and Nevitt [25], Best Practice and Research Clinical Rheumatology.