👨⚕️ Dr. Boss 的聊天室|Episode 12:伸肌群(Extensor Muscles)
Boss Doctor’s Chatroom|Episode 12: Extensor Muscles of the Fingers
副標 / Subtitle👨⚕️ Dr. Boss × 🐨 Koala | 打開手指與穩定控制的關鍵
👨⚕️ Dr. Boss × 🐨 Koala | The Key to Opening and Stabilizing Fingers
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🟦 對話稿 Dialogue(中英對照)
Koala:
Boss 醫生,我們可以握拳,那為什麼也能把手指打開?
Doctor Boss , we can make a fist, but how do we open our fingers?
Boss 醫生:
這就是伸肌群的作用,它們讓手指伸直與打開。
That’s the job of the extensor muscles, which straighten and open the fingers.
Koala:
所以屈肌負責彎曲,伸肌負責伸直?
So flexors bend fingers and extensors straighten them?
Boss 醫生:
完全正確,兩者互相平衡,才能讓手指精準控制。
Exactly, both work in balance for precise finger control.
Koala:
如果伸肌無力會怎樣?
What happens if extensors are weak?
Boss 醫生:
手指會難以伸直,甚至影響抓握穩定性。
Fingers may not fully extend, affecting grip stability.
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🟦 結構篇 Structure(中英對照)
Boss 醫生:
伸肌群主要位於前臂後側:
Extensor muscles are located on the back of the forearm:
肌肉 Muscles
伸指肌 Extensor digitorum
伸拇肌 Extensor pollicis longus
伸小指肌 Extensor digiti minimi
尺側伸腕肌 Extensor carpi ulnaris
橈側伸腕肌 Extensor carpi radialis
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起點 Origin
肱骨外上髁 Lateral epicondyle of humerus
前臂骨 Forearm bones
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止點 Insertion
指背 Extensor expansion of fingers
手腕與掌骨 Metacarpals
拇指指骨 Thumb phalanges
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功能 Function
伸直手指 Extend fingers
打開手掌 Open hand
穩定手腕 Stabilize wrist
協助手部精細動作 Assist fine motor control
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🟦 日常使用 Daily Use(中英對照)
Koala:
伸肌群平常什麼時候會用到?
When do we use extensor muscles daily?
Boss 醫生:
只要你打開手或放開東西,就會用到。
Whenever you open your hand or release objects.
舉例 Examples:
放開物品 Releasing objects
打字 Typing
使用滑鼠 Using a mouse
彈琴 Playing piano
手指伸展 Stretching fingers
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🟦 習慣與保養 Habits & Care(中英對照)
Boss 醫生:
伸肌群疲勞常見原因:
Common causes of extensor muscle fatigue:
長時間滑手機 Excessive phone use
手腕姿勢不良 Poor wrist posture
重複手指動作 Repetitive finger movements
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改善方式 Tips for Improvement:
手背伸展 Wrist extensor stretch
輕柔按摩前臂後側 Massage back of forearm
避免長時間固定姿勢 Avoid prolonged static posture
熱敷放鬆 Warm compress
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🟦 小知識 Mini Note(中英對照)
Koala:
為什麼滑手機久了手背會痠?
Why does the back of the hand feel sore after phone use?
Boss 醫生:
因為伸肌群長時間維持手指穩定,導致肌肉疲勞。
Because extensor muscles work continuously to stabilize fingers, causing fatigue.