Table 2. Surgical characteristics.
| Variable | PJK | Pseudarthrosis | DDD |
|---|---|---|---|
| Number of patients | 6 | 5 | 5 |
| Anterior release | 4 | 1 | 1 |
| Posterior instrumentation replaced | 4 | 2 | 3 |
PJK, proximal junctional kyphosis; DDD, degenerative disk disease.
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