Table 3.

Comparison of mean IKDC scores based on activities between patients who returned and did not return to sport following ACL.

Activities	Total (n = 110)		Return to sport				p-value
			Yes (n = 40)		No (n = 70)
	Mean	SD	Mean	SD	Mean	SD
1. The highest activity level can be performed without significant knee pain	60.00	24.93	81.88	24.67	47.50	14.21	<0.001*
2. Frequency of pain in the last 4 weeks or since injury	68.39	30.23	85.00	17.80	60.48	32.01	0.011*
3. Pain severity	70.65	27.32	84.00	17.76	64.29	29.08	0.028*
4. Stiff or swollen knee in the last 4 weeks or since injury	87.10	24.04	95.00	10.54	83.33	27.76	0.103
5. Highest activity level without significant swelling in knee	69.35	25.58	100.00	.00	54.76	16.99	<0.001*
6. Knee lock or catch in the past 4 weeks or since injury	87.10	34.08	80.00	42.16	90.48	30.08	0.433
7. Highest activity level can be performed without significant giving way	73.39	24.95	100.00	.00	60.71	20.27	<0.001*
8. Activities can be participated on a regular basis	63.71	24.87	95.00	15.81	48.81	9.61	<0.001*
9. Knee effect on ability
9.1 Go up stairs	91.36	18.06	97.50	7.60	87.86	21.17	0.001*
9.2 Go down stairs	90.91	18.15	99.38	3.95	86.07	21.13	0.001*
9.3 Kneel on the front of your knee	68.06	35.82	67.76	35.79	68.21	36.10	0.951
9.4 Squat	75.68	32.39	81.88	27.14	72.14	34.72	0.130
9.5 Sit with your knee bent	85.68	23.08	88.75	21.89	83.93	23.71	0.294
9.6 Rise from a chair	95.91	13.34	99.38	3.95	93.93	16.17	0.009*
9.7 Run straight ahead	87.05	25.51	98.75	5.52	80.36	29.76	<0.001*
9.8 Jump and land on your involved leg	71.80	36.14	90.44	18.48	59.62	39.65	<0.001*
9.9 Stop and start quickly	77.67	33.19	92.50	14.10	68.25	38.15	<0.001*
10.1 Pre-injury use of the knee	94.52	14.10	99.00	3.16	92.38	16.70	0.093
10.2 The current use of the knee	79.03	19.21	94.00	10.75	71.90	18.34	<0.001*
Total IKDC SCORE	78.32	17.19	88.13	8.92	72.72	18.29	<0.001*

p-value from Student t-test, *Significant at p < 0.05.