Table 1. Patient Demographics.
Characteristics | Artificial disc replacement (n=125) | |
---|---|---|
Age (yr) | 42.78±9.57 | |
Sex, male:female | 59:66 | |
Underlying problem | ||
Radiculopathy | 100 (80.00) | |
Myelopathy | 7 (5.60) | |
Mixed | 18 (14.40) | |
BMD (T-score) | -0.03±1.44 | |
Symptom duration (weeks) | 6.81±8.31 | |
Follow-up (months) | 37.59±24.51 | |
Operation level | ||
C3–4 | 4 (3.20) | |
C4–5 | 23 (18.40) | |
C5–6 | 55 (44.00) | |
C6–7 | 35 (28.00) | |
C3–4–5 | 2 (1.60) | |
C4–5–6 | 2 (1.60) | |
C5–6–7 | 4 (3.20) | |
Artificial prosthesis | ||
Semi-constrained | 81 (64.80) | |
Unconstrained | 44 (35.20) |
BMD, bone mineral density.
All data are expressed as a mean±SD or n (%).