Table 1.

Demographic, clinical, and surgical characteristics of MO patients

Characteristics		Overall (N = 128)
Demographic features
Age, years	Mean [SD]	14 [10]
Sex	N [%]
Male		61 [47.7%]
Female		67 [52.3%]
Comorbidity	N [%]
No		113 [88.3%]
Yes		15 [11.7%]
Anthropometric features
Heighta	Mean [SD]
cm		158.50 [10.62]
z-score		− 0.87 [0.82]
Weightb	Mean [SD]
kg		40 [17.67]
z-score		− 0.28 [1.27]
BMIb	Mean [SD]
kg/m2		18.18 [4.90]
z-score		− 0.10 [1.17]
Clinical features
IOR classification	N [%]
Class I		35 [27.3]
Class II		58 [45.4]
Class III		35 [27.3]
N. of OCs	Median [IQR]	10 [0, 35]
Upper limbs OCs		4 [0–26]
Lower limbs OCs		5 [0–18]
Trunk OCs		0 [0–4]
N. of deformities	Median [IQR]	2 [0–11]
Upper limbs deformities		0 [0–6]
Lower limbs deformities		1 [0–10]
Trunk deformities		0 [0–3]
N. of limitations	Median [IQR]	0 [0–5]
Upper limbs limitations		0 [0–4]
Lower limbs limitations		0 [0–4]
Trunk limitations		0 [0–1]
Surgery	N [%]
No		74 [57.8%]
Yes		54 [42.2%]
Age at first surgery, years	Mean [SD]	11 [7]
N. of surgeries	Median [IQR]	2 [1–7]

SD standard deviation; IQR interquartile; BMI body mass index; OCs osteochondromas

^aData were missing for 13 (10.2%) patients

^bData were missing for 17 (13.3%) patients