Table 3.

Outcomes

	Grooveplasty (n = 18)	Trochleoplasty (n = 15)	P Value
Mean follow-up (range), mo	50.8 (6.1-94.4)	42.7 (5.6-80.6)	.423
Mean arc of motion	131.7	125.5	.134
Recurrent instability	0 (0.0)	5 (33.3)	.013∗
Persistent patellofemoral pain	5 (27.8)	2 (13.3)	.413
Patellofemoral chondrosis	8 of 18 (44.4)	3 of 15 (20.0)	.266
Chondrosis prior to procedure	6 (75)	2 (66.7)
Complications	3 (16.7)	2 (13.3)	>.999
Wound infection	1 (5.6)	0 (0.0)
Arthrofibrosis	2 (11.1)	2 (13.3)
Reoperations	4 (22.2)	2 (13.3)	.665
MUA and/or LOA	2 (11.1)	2 (13.3)
Wound irrigation	1 (5.6)	0 (0.0)
Trochlear chondroplasty	1 (5.6)	0 (0.0)
Tibial osteotomy	1 (5.6)	0 (0.0)
PRO, median (IQR)
Kujala score	82.0 (74.5, 91.0)	69.0 (63.5, 82.0)	.059
Tegner score	6.0 (4.0. 6.5)	4.0 (3.0, 5.0)	.052
Subjective IKDC score	70.1 (58.1, 81.6)	59.2 (55.2, 82.2)	.870

NOTE. Data are presented as number (percentage) unless otherwise indicated.

IKDC, International Knee Documentation Committee; IQR, interquartile range; LOA, lysis of adhesions; MUA, manipulation under anesthesia; PRO, patient-reported outcome.

^∗Statistically significant (P < .05).