There was a high correlation between cervical vertebral maturation and skeletal maturation of the hand-wrist. The formula was: Y=35.052+3.549X(Y: hand-wrist bone age, X: cervical vertebral bone age).

• 腕骨骨龄与颈椎骨龄具有高度相关性；相互转化的回归方程为:Y=35.；052+3