Table 1.

Study Demographic Data

Author	Year	Journal	Mean Patient age (Years)	Sex	Initial Cohort	Length of Follow-up (Years)	Percent Follow-up
Mayer	2012	AJSM	20.4 (14–30)	9 male: 16 female	31 knees, 25 patients	9.6 (6–14)	27/31 (87.1%)
Marteau	2011	OTSR	28.2 (16–47)	5 male, 8 female	16 knees, 13 patients	7.5 (2–17)	14/16 (87.5%)
Pritsch	2007	KSSTA	21 (15–54)	26 male, 40 female	80 knees, 66 patients*	6.2 (2–13)	69/80 (86.2%)
Simmons	1992	CORR	12.7 (17–31)	6 male, 8 female	15 knees, 14 patients	4.5 (3–7)	15/15 (100%)
Caton	1990	RCO	17 (13–20)	10 male, 40 female	61 knees, 50 patients	6.2	NR

AJSM = American Journal of Sports Medicine

OSTR = Orthopaedics and Traumatology: Surgery and Research

KSSTA = Knee Surgery, Sports Traumatology, and Arthroscopy

CORR = Clinical Orthopaedics and Related Research

RCO = Revue de Chirurgie Orthopédique et Traumatologique

NR = Not Reported

^*Cohort includes 63 knees with patellar instability at 17 with anterior knee pain