TABLE II.
Comparison of Demographic, Surgical, and Rehabilitation Characteristics As Well As Baseline Patient-Reported Outcome Measures Between Patients with Follow-up and Those Lost to Follow-up
| Patients with Follow-up* (N = 695) | Patients Lost to Follow-up* (N = 148) | |
| Demographics | ||
| Sex | ||
| Male | 379 (55%) | 103 (70%) |
| Female | 316 (45%) | 45 (30%) |
| Age† (yr) | 28.9 ± 10.5, 27 (20, 36) | 28.0 ± 10, 25 (20, 34) |
| BMI† (kg/m2) | 25.9 ± 4.6, 25.1 (22.5, 28.3) | 26.9 ± 4.9, 26.5 (23.1, 30.5) |
| Smoking status | ||
| Never | 537 (77%) | 107 (72%) |
| Quit | 85 (12%) | 24 (16%) |
| Current | 63 (9%) | 13 (9%) |
| Blank | 10 (1%) | 4 (3%) |
| Education level† (yr of school) | 14.7 ± 2.9, 15 (12, 17) | 14.3 ± 3.0, 14 (12, 16) |
| Surgical | ||
| Time from last ACL reconstruction† (yr) | 6.2 ± 6.0, 4.0 (1.5, 10.0) | 4.5 ± 4.4, 3.0 (1.3, 6.5) |
| Graft type for revision | ||
| Autograft | 345 (50%) | 78 (53%) |
| Allograft | 329 (47%) | 64 (43%) |
| Both | 21 (3%) | 6 (4%) |
| Graft source for revision | ||
| Bone-patellar tendon-bone | 354 (51%) | 82 (55%) |
| Soft tissue | 333 (48%) | 63 (43%) |
| Other | 8 (1%) | 3 (2%) |
| Rehabilitation | ||
| Restriction of passive range of motion | ||
| No | 612 (88%) | 133 (90%) |
| Yes | 79 (11%) | 15 (10%) |
| Blank | 4 (<1%) | 0 |
| Restriction of active range of motion | ||
| No | 597 (86%) | 125 (84%) |
| Yes | 93 (13%) | 22 (15%) |
| Blank | 5 (<1%) | 1 (<1%) |
| Restriction of postoperative full weight-bearing (without support) | ||
| No | 417 (60%) | 90 (61%) |
| Yes | 275 (40%) | 57 (39%) |
| Blank | 3 (<1%) | 1 (<1%) |
| Prescription of motion control brace (i.e., knee immobilizer) postoperatively | ||
| No | 320 (46%) | 60 (41%) |
| Yes | 371 (53%) | 87 (59%) |
| Blank | 4 (<1%) | 1 (<1%) |
| Prescription of ACL derotation brace for postoperative rehabilitation | ||
| No | 595 (86%) | 120 (81%) |
| Yes | 96 (14%) | 28 (19%) |
| Blank | 4 (<1%) | 0 |
| Prescription of ACL derotation brace for return to sports | ||
| No | 482 (69%) | 91 (62%) |
| Yes | 197 (28%) | 56 (38%) |
| Blank | 16 (2%) | 1 (<1%) |
| Baseline patient reported outcomes† | ||
| IKDC | 52 ± 18, 52 (40, 63) | 50 ± 19, 51 (32, 65) |
| KOOS | ||
| Symptoms | 67 ± 20, 68 (54, 82) | 64 ± 21, 68 (50, 82) |
| Pain | 72 ± 19, 75 (61, 86) | 70 ± 22, 75 (56, 89) |
| Activities of daily living | 81 ± 18, 87 (69, 96) | 78 ± 22, 85 (68, 96) |
| Sports/recreation | 47 ± 28, 45 (25, 65) | 45 ± 27, 43 (25, 60) |
| Quality of life | 34 ± 20, 31 (19, 44) | 31 ± 22, 31 (13, 44) |
| Marx activity level | 9 ± 6, 11 (4, 16) | 9 ± 6, 10 (2, 14) |
*
The variables are reported as the number (percentage) except as indicated.
†
The variables are reported as the mean ± standard deviation, median (25th, 75th percentiles).