Table 2.

Assessment of Ankle Osteoarthritis in Patients With Achondroplasia Aged <40 Years in the Surgical and Nonsurgical Groups.

	Total (174 ankles)	Surgical group (64 ankles)	Nonsurgical group (110 ankles)	P
Van Dijk score				0.527
0	153 (88)	54 (84)	99 (90)
I	17 (10)	8 (13)	9 (8)
II	4 (2)	2 (3)	2 (2)
III	0 (0)	0 (0)	0 (0)
K-L scale				0.419
0	136 (78)	46 (72)	90 (82)
1	22 (13)	11 (17)	11 (10)
2	12 (7)	5 (8)	7 (6)
3	4 (2)	2 (3)	2 (2)
4	0 (0)	0 (0)	0 (0)

Data are presented as number of patients (%). K-L, Kellgren and Lawrence.