👨⚕️ Dr. BOSS 的聊天室|Episode 05:腕掌關節(CMC)
BOSS Doctor’s Chatroom|Episode 05: Carpometacarpal Joints (CMC)
副標 / Subtitle
👨⚕️ Dr. BOSS × 🐨 Koala | 拇指抓握的秘密武器
👨⚕️ Dr. BOSS × 🐨 Koala | The Secret Weapon for Thumb Grip
🟦 對話稿 Dialogue(中英對照)
Koala:
BOSS醫生,CMC 是哪裡? Doctor BOSS, where is the CMC joint?
BOSS 醫生:
CMC 連接掌骨與腕骨,是手指和手掌的中樞關節。 The CMC connects the metacarpals to the wrist bones, acting as a central hub for hand movements.
Koala:
是不是拇指 CMC 最重要? Is the thumb CMC the most important?
BOSS 醫生:
對!它能對掌,讓拇指跟其他手指相碰,抓握、捏取都靠它。 Yes! It enables thumb opposition, letting the thumb meet other fingers for gripping and pinching.
🟦 結構篇 Structure(中英對照)
BOSS 醫生:
CMC 結構主要有三個部分: The CMC joint consists of three main components:
- 骨頭 Bones
- 掌骨 Metacarpals
- 腕骨 Carpal bones
承載手掌力量,連接手腕與手指。 Supports hand power, linking wrist and fingers.
- 韌帶 Ligaments
- 棘側韌帶 Dorsal ligaments
- 掌側韌帶 Volar ligaments
- 內側韌帶 Collateral ligaments
保持關節穩定並限制過度移動。 Maintain stability and limit excessive motion.
- 肌腱 Tendons
- 拇長屈肌腱 Flexor pollicis longus
- 拇長伸肌腱 Extensor pollicis longus
控制拇指大範圍屈伸與旋轉。 Controls thumb flexion, extension, and rotation.
🟦 日常使用 Daily Use(中英對照)
Koala:
CMC 平常都在做什麼? What does the CMC do daily?
BOSS 醫生:
一句話:CMC = 拇指抓握與靈活度的起點
舉例 Examples:
- 拿筷子 Holding chopsticks
- 握手 Shaking hands
- 拿手機握把 Holding a phone
- 捏零錢 Pinching coins
🟦 習慣與保養 Habits & Care(中英對照)
BOSS 醫生:
CMC 疲勞或疼痛常見原因: Common causes of CMC fatigue or pain:
長時間用拇指滑手機 Excessive phone scrolling
反覆抓握 Pinching/gripping repeatedly 拇指僵硬 Stiff thumb
改善方式 Tips for Improvement:
- 換手指姿勢 Reduce repetitive motion
- 熱敷拇指 3–5 分鐘 Warm thumb for 3–5 minutes
- 使用輔助工具 Supportive grips for heavy objects
🟦 小知識 Mini Note(中英對照)
Koala
為什麼拇指基部容易關節痛? Why does the base of the thumb often hurt?
BOSS 醫生:
因為 CMC 長期負責抓握與對掌,長時間使用容易發炎或疲勞。 Because the CMC handles prolonged gripping and opposition, leading to inflammation or fatigue.















