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. 2021 Dec 9;63(1):72–81. doi: 10.3349/ymj.2022.63.1.72

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 (%).