What question did this study set out to answer?

To determine the necessary cervical kyphosis correction angle (NeckCA) for ideal cervical alignment in spinal deformities.

March 16, 2026

Necessary cervical kyphosis correction angle (NeckCA) for ideal alignment in cervical spinal deformity.

Puntos clave

To determine the necessary cervical kyphosis correction angle (NeckCA) for ideal cervical alignment in spinal deformities.
Analyzed 29 cases of cervical spinal deformity (CSD) corrections.
Assessed the relationship between cervical lordosis (CL) and T1 slope (T1S) adjustments.
Investigated the role of an additional corrective angle using COG-T1.
Identified NeckCA as a practical parameter for achieving optimal alignment.
Found that increasing CL alone led to undercorrection due to compensatory T1S increases.

Resumen

In CSD correction, increasing CL alone to meet a T1S - CL < 15° often results in compensatory increases in T1S, leading to undercorrection. To counteract this, preoperative planning should include an additional corrective angle represented by the COG-T1. The authors' analysis of 29 cases confirms the use of NeckCA as a practical and predictive parameter for achieving optimal cervical alignment.

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