三角肌侧束怎么了

Lateral Deltoid

Side deltoid

肩膀外侧常见

这块肌肉是什么

三角肌中间肌束，负责手臂侧向抬起（外展），是形成肩部"圆润"轮廓的主要部分。

为什么会不舒服

过度侧举训练后酸痛；肩部撞击不适时侧束区域不适；肩部不适时的代偿性紧张。

常见不适表现

肩膀外侧酸胀；手臂侧抬到60-120°时疼痛（"疼痛弧"）；肩部外侧压痛。

缓解方法

肩部放松拉伸；减少侧举训练量；⚠️ 如出现"疼痛弧"或持续疼痛，建议就医检查。

在三维人体上查看三角肌侧束

相邻的肌肉

Side deltoid

Outer shoulder · Common

What this muscle is

The middle part of the deltoid. It lifts the arm out to the side, and it is the main part of a rounded shoulder outline.

Why it gets uncomfortable

Soreness after too many lateral raises; discomfort here when the shoulder is pinching; the side fibers tighten to compensate when the shoulder is unhappy.

How it usually feels

A sore, full feeling on the outside of the shoulder; pain when the arm lifts out to the side through about 60–120° (a "painful arc"); tenderness on the outer shoulder.

What helps

Relax and stretch the shoulder. Do fewer lateral raises. ⚠️ If you get a "painful arc" or the pain keeps going, see a doctor.

本内容为运动健康科普，仅供参考，不构成医疗建议；不适持续或加重请及时就医。 General movement and health information, not medical advice. See a doctor if it continues or gets worse.