Table 1. Distribution of fractures of the long tubular bones during the period of skeletal development.

Two-digit fracture site code	Region	Number	Percentage
1.1.	Proximal humerus	73	4.1
1.2.	Humeral diaphysis	20	1.1
1.3.	Distal humerus	278	15.6
2.1.	Proximal forearm	68	3.8
2.2.	Diaphyseal forearm	193	10.8
2.3.	Distal forearm	728	40.8
Sum	Upper extremity	1360	76.3
3.1.	Proximal femur	11	0.6
3.2.	Femoral diaphysis	57	3.2
3.3.	Distal femur	25	1.4
4.1.	Proximal lower leg	36	2.0
4.2.	Diaphyseal lower leg	128	7.2
4.3.	Distal lower leg	166	9.3
Sum	Lower extremity	423	23.7
Total		1783	100

The two-digit fracture site codes are identical in the AO and Li-La classifications. The data are modified from (9). AO, Arbeitsgemeinschaft Osteosynthese—Association for the Study of Internal Fixation; Li-La, Light and Laughter for Sick Children—Efficiency in Medicine