Table 2.

Clinical scoring system for assessing dogs with osteoarthritis

Criterion	Grade	Clinical evaluation
Lameness	1	Walk normally
	2	Slightly lame when walking
	3	Moderately lame when walking
	4	Severely lame when walking
	5	Reluctant to rise and will not walk more than five paces
Pain at palpation	1	None
	2	Mild signs; dog turns head in recognition
	3	Moderate signs; dog pulls limb away
	4	Severe signs; dog vocalizes or becomes aggressive
	5	Dog will not allow palpation
Joint mobility	1	Full range of motion
	2	Mild limitation (10 ∼ 20%) in range of motion; no crepitus
	3	Mild limitation (10 ∼ 20%) in range of motion; crepitus
	4	Moderate limitation (20 ∼ 50%) in range of motion; ± crepitus
	5	Severe limitation (>50%) in range of motion; ± crepitus