Table 1.
Demographics at time of ACL reconstruction, intraoperative findings, and repeat non-ACL surgerya
| Variable | Level | Median (interquartile range) or Number (percentage) |
|---|---|---|
| Age, years | 21 (19, 25) | |
|
| ||
| Sex | Male Female |
65 (49%) 68 (51%) |
|
| ||
| Body Mass Index (BMI), kilograms/meters2 | 22.9 (21.0, 25.1) | |
|
| ||
| Smoking status | Current Quit Never smoked |
4 (3%) 8 (6%) 121 (91%) |
|
| ||
| ACL graft type | BTB autograft Hamstring autograft Allograft |
82 (62%) 47 (35%) 4 (3%) |
|
| ||
| Marx activity score | 16 (12, 16) | |
|
| ||
| Medial meniscus status | Normal Stable untreated tear Stable tear, trephination Repaired tear Partial meniscectomy |
84 (63%) 12 (9%) 2 (1.5%) 22 (16.5%) 13 (10%) |
|
| ||
| Lateral meniscus status | Normal Stable untreated tear Stable tear, trephination Repaired tear Partial meniscectomy |
58 (44%) 24 (18%) 2 (1.5%) 10 (7.5%) 39 (29%) |
|
| ||
| Medial compartment articular cartilage status | Grade 0–1 Grade 2+ |
121 (91%) 12 (9%) |
|
| ||
| Lateral compartment articular cartilage status | Grade 0–1 Grade 2+ |
111 (83%) 22 (17%) |
|
| ||
| Patellofemoral compartment articular cartilage status | Grade 0–1 Grade 2+ |
124 (93%) 9 (7%) |
|
| ||
| Additional ipsilateral surgery (non-ACL surgery) | No | 108 (81%) |
| Yes | 25 (19%) | |
| Surgery for arthrofibrosisb | 14/25 (56%)c | |
| Partial meniscectomy | 11/25 (44%)c | |
| Removal tibial hardware | 2/25 (8%)c | |
| Chondroplasty | 2/25 (8%)c | |
| Microfracture | 1/25 (4%)c | |
| Removal loose body | 1/25 (4%)c | |
|
| ||
| Additional contralateral surgery (non-ACL surgery) | No Yes |
133 (100%) 0 (0%) |
Key: ACL= anterior cruciate ligament; BTB=bone-patellar tendon-bone; Grade = modified Outerbridge articular cartilage grade
a
Reported values are for the 133/146 subjects with bilateral radiographs at 10 years follow-up who did not undergo revision ipsilateral ACL surgery or contralateral primary ACL surgery.
b
Surgery for arthrofibrosis included arthroscopic anterior debridement, synovectomy, and/or manipulation under anesthesia.
c
Percentages equal greater than 100% as one or more procedures couple be performed at time of repeat non-ACL surgery