Table 2 Demographics, operative characteristics, and postoperative outcomes of subjects with antibiotic allergies versus those without
|  | No antibiotic PRAs (n = 109) | With antibiotic PRAs (n = 32) | p-Value |
|---|---|---|---|
Age at time of surgery (years) | 25 ± 10 | 25 ± 7 | 0.29 |
Sex | |||
 Male | 31 (28%) | 12 (38%) | 0.33 |
 Female | 78 (72%) | 20 (62%) | |
Sports participation | 47 (43%) | 17 (53%) | 0.28 |
Concomitant procedures | |||
 Primary TTO | 51 (47%) | 13 (41%) | 0.55 |
 Meniscectomy | 5 (5%) | 0 (0%) | 0.59 |
 Chondroplasty | 48 (44%) | 13 (41%) | 1.00 |
 Loose body removal | 12 (11%) | 3 (9%) | 1.00 |
Subsequent surgery | |||
 Any reoperation | 11 (10%) | 3 (9%) | 1.00 |
 Revision | 3 (3%) | 0 (0%) | 1.00 |
 Removal of hardware | 2 (2%) | 1 (3%) | 0.54 |
 MUA | 4 (4%) | 1 (3%) | 1.00 |
 Secondary TTO | 2 (2%) | 0 (0%) | 1.00 |
 TKA | 0 (0%) | 1 (3%) | 0.23 |
Follow-up time (months) | 46 ± 29 | 51 ± 24 | 0.21 |
Outcomes | |||
 Recurrent instability | 15 (14%) | 2 (6%) | 0.36 |
 VAS (overall) | 16 ± 21 | 7 ± 15 | 0.007* |
 VAS (sports) | 29 ± 28 | 21 ± 25 | 0.13 |
 Kujala score | 84 ± 16 | 86 ± 15 | 0.66 |
 MPFL-RSI score | 59 ± 27 | 61 ± 28 | 0.79 |
 Satisfaction score | 83 ± 26 | 85 ± 26 | 0.40 |
 Would repeat surgery | 89 (82%) | 28 (88%) | 0.44 |
 Return to sport | 22 (47%) | 7 (41%) | 0.69 |
 Return to sport at presymptomatic level | 15 (32%) | 5 (29%) | 1.00 |
 Time to return to sport (months) | 9 ± 5 | 11 ± 8 | 0.66 |