Table 2.

Injury Incidence Characterized by Primary Contributing Mechanism and Associated Body Part Most Affected

Mechanism of Injury	NEISS Cases	National Estimate	%	Most Common Body Part
Non-contact twisting	300	11,108	35.47%	Ankle
Hit/collision	139	5,298	16.92%	Knee
Tackle	144	4,723	15.08%	Ankle
Fall	64	2,380	7.60%	Knee
Stepped on	23	1,012	3.23%	Foot
Kicked	11	260	0.83%	Lower leg
Other	19	989	3.16%	Knee
Not specified	145	5,548	17.72%	Knee

NOTE. “Not specified” indicates primary mechanism unable to be determined from case narrative.

NEISS, National Electronic Injury Surveillance System.