Table 1 Spondylolisthesis versus no spondylolisthesis: patient demographics, preoperative characteristics, spinal deformity measurements, postoperative outcomes
From: Spondylolisthesis and mismatch deformity affect outcomes after total knee arthroplasty
No spondylolisthesis | Spondylolisthesis | p value | |
|---|---|---|---|
n = 44 | n = 49 | ||
Patient characteristics | |||
Sex, female | 79.5% (35) | 77.3% (34) | 0.64 |
Age, mean | 69.0 | 71.4 | 0.19 |
BMI, mean | 29.7 | 28.6 | 0.33 |
Osteoporosis/penia | 22.7% (10) | 53.1% (26) | 0.002 |
Laterality (right) | 20 | 25 | 0.60 |
Pre-op characteristics | |||
ROM less than 0–120 | 45.5% (20) | 57.1% (28) | 0.26 |
Arc of motion, mean | 111 | 113 | 0.52 |
Opiate use | 11.4% (5) | 12.2% (6) | 0.90 |
Coronal deformity | 70.5% (31) | 65.3% (32) | 0.60 |
Measurements | |||
Mismatch deformity (PI–LL > 10) | 12.5 | 22.2 | < 0.001 |
Pelvic incidence | 53.3 | 61.7 | < 0.001 |
Lumbar lordosis | 43.9 | 49.4 | 0.21 |
Pelvic tilt | 16.9 | 24.7 | < 0.001 |
Sacral slope | 37.2 | 36.6 | 0.81 |
Outcomes | |||
MUA | 0.0% (0) | 12.2% (6) | 0.016 |
ROM less than 0–120 | 68.2% (30) | 42.9% (21) | < 0.001 |
Arc of motion, mean | 118 | 111 | 0.024 |
Delta arc of motion, mean | 110 | 104 | 0.21 |
Revisions | 4.55% (2) | 0% (0) | 0.13 |
Flexion contracture | 11.4% (5) | 12.2% (6) | 0.90 |