Clinical and radiological features and skeletal sequelae in childhood intra-/juxta-articular versus extra-articular osteoid osteoma

Table 2 Comparison of clinical and radiological features between the two types of osteoid osteoma

Variables	Intra- /juxta-articular (n = 11)	Extra-articular (n = 23)	p-value
Classic symptom	4	16	0.135^*
Synovitis	8	0	<0.001^*
Misdiagnosis	7	5	0.026^*
Typical nidus	4	18	0.026^*
Skeletal abnormality	5	1	0.008^*
Diagnostic delay (months)	12 (1.5 to 18)	1.5 (1 to 6)	0.002^**

Data presented as number of patients who had each clinical and radiologic feature, except diagnostic delay in which data presented as median (range). *Fisher’s exact test, **Mann–Whitney test.

ISSN: 1471-2474