Table 1 Demographics, operative characteristics, and postoperative outcomes of patients with reported drug allergies (PRAs) versus those without

Age at time of surgery (years)

25 ± 9

24 ± 9

28 ± 10

0.01*

Sex

 Male

43 (30%)

31 (33%)

12 (26%)

0.37

 Female

98 (70%)

63 (67%)

35 (74%)

Sports participation

64 (45%)

42 (45%)

22 (47%)

0.81

Concomitant procedures

 Primary TTO

64 (45%)

43 (46%)

21 (45%)

0.90

 Meniscectomy

5 (4%)

3 (3%)

2 (4%)

1.00

 Chondroplasty

61 (43%)

45 (48%)

17 (36%)

0.35

 Loose body removal

15 (11%)

10 (11%)

5 (11%)

1.00

Subsequent surgery

 Any reoperation

14 (10%)

7 (7%)

7 (15%)

0.23

 Revision

3 (2%)

2 (2%)

1 (2%)

1.00

 Removal of hardware

3 (2%)

2 (2%)

1 (2%)

1.00

 MUA

5 (4%)

2 (2%)

3 (6%)

0.33

 Secondary TTO

2 (1%)

1 (1%)

1 (2%)

1.00

 TKA

1 (1%)

0 (0%)

1 (2%)

0.33

Follow-up time (months)

47 ± 28

45 ± 27

51 ± 28

0.22

Outcomes

 Recurrent instability

17 (12%)

11 (12%)

6 (13%)

0.82

 VAS (overall)

14 ± 20

15 ± 21

12 ± 19

0.23

 VAS (sports)

27 ± 27

28 ± 28

24 ± 26

0.45

 Kujala score

85 ± 16

85 ± 16

84 ± 16

0.51

 MPFL-RSI score

60 ± 27

59 ± 27

61 ± 28

0.86

 Satisfaction score

84 ± 26

83 ± 27

85 ± 24

0.78

 Would repeat surgery

117 (83%)

77 (82%)

40 (85%)

0.63

 Return to sport

29 (45%)

20 (48%)

9 (41%)

0.61

 Return to sport at presymptomatic level

20 (31%)

15 (36%)

5 (23%)

0.40

 Time to return to sport

(months)

9 ± 6

9 ± 5

11 ± 7

0.49