The AO Pediatric Comprehensive Classification of Long Bone Fractures (PCCF)

Figures & data

Table 1. Demographics of patients with 548 lower extremity fractures

Parameter	Patients n (%)
Number of patients	534
Age^a, years
Mean (SD)	7.4 (4.8)
Median (range)	7 (0–17)
Age classes
Infants and toddlers (< 2 years)	78 (15)
Pre-school children (2 to <6 years)	134 (25)
Schoolchildren^b (6 to <11 years)	141 (26)
Adolescents (11 to 17 years)	181 (34)
Sex
Girl	204 (38)
Boy	330 (62)
BMI classes^c
Severely thin	9 (6)
Thin	8 (5)
Normal	90 (59)
Overweight	28 (18)
Obese	17 (11)

a Age at the time of event, truncated.

b Corresponds to middle childhood.

c The body mass index classes according to the WHO could be only determined for patients in Bern who were older than 2 years and for whom height and weight measurements were available (n = 152).

Table 2. Distribution of fractures according to segment and type within bones. Values are n (%)

			Infants/	Pre-school	School-
Bone	Type	toddlers	children	children	Adolescents	Total
Femur (3)		23	40	35	37	135
Proximal	E	0	0	0	1	1
	M	1	2	0	4	7
Shaft	D	12	33	24	24	93
	M	10	4	7	3	24
Distal	E	0	1	4	4	9
Multilevel^a		0	0	0	1	1
Tibia/Fibula (4)		55	96	112	150	413
Tibia		37 (67)	63 (66)	55 (49)	65 (43)	220 (53)
Proximal	E	0	2	5	9	16
	M	10	9	1	3	23
Shaft	D	17	46	41	16	120
	M	10	6	1	5	22
Distal	E	0	0	7	32	39
Fibula		4 (7)	6 (6)	36 (32)	24 (16)	70 (17)
Proximal	E	0	0	0	0	0
	M	0	0	0	0	0
Shaft	D	3	0	0	3	6
	M	1	1	0	1	3
Distal	E	0	5	36	20	61
Combined		14 (26)^b	27 (28)	21 (19)^c	61 (41)^d	123 (30)
Total		78	136	147	187	548

D: diaphyseal; E: epiphyseal; M: metaphyseal.

a One fracture event with 2 fracture locations.

b Including 1 fracture event with 3 fracture locations in the tibia and fibula.

c Including 2 fracture events with 2 fracture locations in the tibia.

d Including 3 fracture events with 2 fracture locations in the tibia and 2 events with 3 locations in the tibia and fibula.

Isolated fractures of the lower extremity (femur, tibia, and fi bula), according to age group and fracture location.