A Comparison of the Device-Related Complications of Intramedullary Lengthening Nails Using a New Classification System

Table 3

Device-related complication.

Complication	ISKD	PRECICE1	PRECICE2
Ia	18 (51%)		1 (2.2%)
	Runaway nail: 6; Difficult to distract nail: 12		Running back
Ib	4 (12%)	2 (5.9%)	1 (2.2%)
	Nondistracting nail: 3; Failure of lengthening mechanism: 1	Dense regenerated callus	Nonfunctioning nail
Ic
Total type I	22 (63%)	2 (5.9%)	2 (5.9%)
IIa	3 (8.6%)	3 (8.8%)	19 (41%)
	Nail bending without breakage: 2	Nail bending without breakage	Nail bending without breakage: 7
	Breakage of rotation coupling without instability: 1		Breakage of rotation coupling without instability: 12
IIb		1 (2.9%)	2 (4.3%)
		Nail breakage	Rotational stability
IIc
Total type II	3 (8.6%)	4 (11.8%)	21 (46%)
III

Note. Actually, Type III (other device-related complications) complication was not observed.