Table 4 Analysis of MPFL outcomes between patients with allergies with and without psychiatric diagnoses
|  | No PRAs (n = 94) | PRAs without psychiatric disorder (n = 35) | PRAs with psychiatric disorder (n = 12) | p-Value |
|---|---|---|---|---|
Age at time of surgery (years) | 24 ± 9 | 28 ± 11 | 26 ± 5 | 0.04* |
Sex | ||||
 Male | 31 (33%) | 10 (29%) | 2 (17%) | 0.49 |
 Female | 63 (67%) | 25 (71%) | 10 (83%) | |
Sports participation | 42 (45%) | 16 (46%) | 6 (50%) | 1.00 |
Concomitant procedures | ||||
 Primary TTO | 43 (46%) | 15 (43%) | 6 (50%) | 0.91 |
 Meniscectomy | 3 (3%) | 2 (6%) | 0 (0%) | 0.75 |
 Chondroplasty | 45 (48%) | 13 (37%) | 4 (33%) | 0.66 |
 Loose body removal | 10 (11%) | 5 (14%) | 0 (0%) | 0.46 |
Subsequent surgery | ||||
 Any reoperation | 7 (7%) | 5 (14%) | 2 (17%) | 0.30 |
 Revision | 2 (2%) | 0 (0%) | 1 (8%) | 0.25 |
 Removal of hardware | 2 (2%) | 1 (3%) | 0 (0%) | 1.00 |
 MUA | 2 (2%) | 3 (9%) | 0 (0%) | 0.15 |
 Secondary TTO | 1 (1%) | 1 (3%) | 0 (0%) | 0.33 |
 TKA | 0 (0%) | 0 (0%) | 1 (8%) | 0.09 |
Follow-up time (months) | 45 ± 27 | 52 ± 26 | 49 ± 34 | 0.29 |
Outcomes | ||||
 Recurrent instability | 11 (12%) | 3 (9%) | 3 (25%) | 0.25 |
 VAS (overall) | 15 ± 21 | 13 ± 19 | 9 ± 19 | 0.30 |
 VAS (sports) | 28 ± 28 | 21 ± 25 | 33 ± 31 | 0.31 |
 Kujala score | 85 ± 16 | 86 ± 13 | 79 ± 20 | 0.67 |
 MPFL-RSI score | 59 ± 27 | 64 ± 28 | 52 ± 29 | 0.35 |
 Satisfaction score | 83 ± 27 | 88 ± 21 | 76 ± 31 | 0.47 |
 Would repeat surgery | 77 (82%) | 32 (91%) | 8 (67%) | 0.13 |
 Return to sport | 20 (48%) | 7 (44%) | 2 (33%) | 0.86 |
 Return to sport at presymptomatic level | 15 (36%) | 5 (31%) | 0 (0%) | 0.15 |
 Time to return to sport (months) | 9 ± 5 | 11 ± 8 | 11 ± 6 | 0.74 |