Table 1.

Patient characteristics by bone bruise status.

	N	no		yes		Combined
		N = 106		N = 419		N = 525
Injury Chronicity weeks	265	9.1 20.4 41.0	(74.7±170.2)	4.3 8.3 14.1	(37.6±136.7)	4.6 9.3 20.4	(44.5±143.8)
Pain Chronicity weeks	352	5.7 14.9 26.7	(54.0±154.3)	4.3 7.3 12.6	(16.9± 65.2)	4.4 7.9 14.1	(22.9± 86.9)
Giving-way Episodes	439	2.0 4.0 10.0	(11.5±20.3)	1.0 2.0 5.0	(5.2± 9.9)	1.0 3.0 6.0	(6.6±13.1)
Reinjuries	440	0.0 1.0 2.0	(3.0±9.3)	0.0 0.0 1.0	(0.8±2.2)	0.0 0.0 1.0	(1.3±4.8)
Sex	525
male		60%	$\frac{64}{106}$	57%	$\frac{240}{419}$	58%	$\frac{304}{525}$
female		40%	$\frac{42}{106}$	43%	$\frac{179}{419}$	42%	$\frac{221}{525}$
Age	525	19 30 41	(31±13)	17 22 32	(25±11)	17 23 34	(26±11)
Baseline BMI	525	23.0 26.1 29.5	(27.1± 5.8)	22.1 24.4 27.6	(25.6± 5.5)	22.1 24.8 28.0	(25.9± 5.6)
Activity at Injury	465
Baseball/softball		2%	$\frac{2}{101}$	4%	$\frac{16}{364}$	4%	$\frac{18}{465}$
Basketball		14%	$\frac{14}{101}$	20%	$\frac{73}{364}$	19%	$\frac{87}{465}$
Football		8%	$\frac{8}{101}$	18%	$\frac{66}{364}$	16%	$\frac{74}{465}$
Other Sport		24%	$\frac{24}{101}$	21%	$\frac{78}{364}$	22%	$\frac{102}{465}$
Skiing		9%	$\frac{9}{101}$	7%	$\frac{26}{364}$	8%	$\frac{35}{465}$
Soccer		16%	$\frac{16}{101}$	16%	$\frac{60}{364}$	16%	$\frac{76}{465}$
Non-sport		28%	$\frac{28}{101}$	12%	$\frac{45}{364}$	16%	$\frac{73}{465}$
Contact Injury	525
no		83%	$\frac{88}{106}$	72%	$\frac{302}{419}$	74%	$\frac{390}{525}$
yes		17%	$\frac{18}{106}$	28%	$\frac{117}{419}$	26%	$\frac{135}{525}$
”Pop” at Injury	525
no		29%	$\frac{31}{106}$	34%	$\frac{141}{419}$	33%	$\frac{172}{525}$
yes		71%	$\frac{75}{106}$	66%	$\frac{278}{419}$	67%	$\frac{353}{525}$
Injured Jumping	525
no		65%	$\frac{69}{106}$	76%	$\frac{319}{419}$	74%	$\frac{388}{525}$
yes		35%	$\frac{37}{106}$	24%	$\frac{100}{419}$	26%	$\frac{137}{525}$
Marx Activity Score	521	4.0 12.0 16.0	(9.6± 5.8)	10.0 14.0 16.0	(12.3± 4.8)	9.0 13.0 16.0	(11.7± 5.1)
KOOS Pain	521	53 75 83	(68±20)	56 72 83	(70±19)	56 72 83	(69±19)
KOOS Symptoms	519	50 68 82	(65±20)	50 64 79	(63±19)	50 64 79	(64±19)
SF36 Bodily Pain	523	42.0 44.0 51.0	(44.3± 8.9)	41.0 44.0 52.0	(45.7±10.2)	41.0 44.0 52.0	(45.4±10.0)