Exploring the Relationship Between Sagittal Shoulder C7 Angle and Musculoskeletal Health in College Students: A Longitudinal Study

The sagittal plane angle of the shoulder at the C7 vertebra is a crucial metric for assessing shoulder alignment. Typically, it's determined by the intersection of the line connecting the C7 vertebra (the prominent bone at the base of the neck) and the midpoint of the acromion. This metric is widely used to detect irregularities such as anterior head positioning or hunched shoulders, providing valuable insights into posture and alignment trends, especially among college student. A total 194 college going male and female students are included in this study to establish the normative reference of sagittal shoulder C7 angle. The C7 angle was calculated in two phases. Firstly, we took photographs of neck and head of participants in sagittal plane and angle was calculated by Kinovea software which was reliable methods. Normative was establish for the participants which came to be normal. The p value obtained was greater than 0.05(p=0.200) Hence the normative value is represented in terms of Mean±SD. The analysis was successful and normative score for C7 angle was 53.09±6.12.

肩部在第七颈椎（位于颈底部显著骨骼）处的矢状面角度是评估肩部对齐的关键指标。通常，该角度通过连接第七颈椎与肩峰中点的线条的交点来确定。此指标被广泛应用于检测如头部前倾或耸肩等不规则性，为姿态和对齐趋势提供了宝贵的见解，尤其在大学生群体中。本研究共纳入194名男女大学生，以建立肩部矢状面C7角度的规范性参考值。C7角度的计算分为两个阶段。首先，我们对参与者的颈部和头部在矢状面进行拍照，并使用Kinovea软件（一种可靠的方法）计算角度。对于达到正常水平的参与者建立了规范性参考。所得p值大于0.05（p=0.200），因此规范性值以平均值±标准差的形式表示。分析成功，C7角度的规范性得分为53.09±6.12。