👨⚕️ Dr. BOSS 的聊天室|Episode 03:掌指關節(MCP)
BOSS Doctor’s Chatroom|Episode 03: Metacarpophalangeal Joint (MCP)
副標 / Subtitle
👨⚕️ Dr. BOSS × 🐨 Koala | 手掌與手指的力量中樞
👨⚕️ Dr. BOSS × 🐨 Koala | The Power Hub Between Palm and Fingers
🟦 對話稿 Dialogue(中英對照)
Koala:
BOSS醫生,今天要聊 MCP,是不是手指根部那個關節? Doctor BOSS, are we talking about the MCP today, the one at the base of the fingers?
BOSS 醫生:
沒錯!MCP 是手掌與手指的連接點,也是力量與靈活度的來源。 Exactly! The MCP connects the palm and fingers, providing both strength and flexibility.
Koala:
感覺它比 PIP 和 DIP 承受的力還大? Seems like it bears more force than PIP and DIP?
BOSS 醫生:
完全正確!握拳、抓東西、推拉…大部分力量都從 MCP 來傳遞。 Absolutely! Making a fist, gripping, pushing, or pulling—all the force flows through the MCP.
🟦 結構篇 Structure(中英對照)
BOSS 醫生:
MCP 的構造比較複雜,但功能超強,由三個主要部分組成: The MCP joint is more complex but highly functional, composed of three main components:
- 骨頭 Bones
近節指骨 Proximal phalanx 掌骨 Metacarpal bone 這兩塊骨頭承受手指力量的主要傳導。 These two bones transmit most of the finger’s power. - 韌帶 Ligaments
側副韌帶 Collateral ligaments(穩定左右) 掌板 Volar plate(防止過伸) 背側滑膜囊 Dorsal capsule(保護關節背面) Koala: 背側滑膜囊是什麼?像保護蓋嗎? What’s the dorsal capsule? Like a protective cover?
BOSS 醫生:
差不多,它保護 MCP 背面不受撞擊與磨損。 Yes, it protects the back of the MCP from impact and wear.
- 肌腱 Tendons
伸肌腱 Extensor tendon(伸直手指) 淺層屈肌腱 Flexor digitorum superficialis tendon(彎曲手指) 深層屈肌腱 Flexor digitorum profundus tendon(手指末端彎曲) MCP 連結整隻手指的力量,協調 DIP 與 PIP 的動作。 The MCP connects the finger’s power chain, coordinating movements of DIP and PIP.
🟦 日常使用 Daily Use(中英對照)
Koala:
MCP 平常最常用到什麼情境? How do we use the MCP most often?
BOSS 醫生:
一句話:MCP = 手指力量的起點
舉例 Examples:
握拳 Making a fist
握杯子 Holding a cup 推門 Pushing a door 拿重物 Lifting objects 彈鋼琴 Playing piano
🟦 習慣與保養 Habits & Care(中英對照)
BOSS 醫生:
MCP 疲勞或受傷通常與以下習慣有關: MCP fatigue or injury often comes from:
長時間握筆或手機 Holding pen / phone for long periods
重力拉扯或搬重物 Pulling or lifting heavy objects 過度打字或彈琴 Excessive typing / piano practice 手指僵硬、血液循環差 Stiff fingers / poor circulation
改善方式 Tips for Improvement:
握拳伸展 30 秒 Fist stretches for 30 seconds
減少重力拉扯 Reduce heavy pulling 手指熱敷 3–5 分鐘 Warm fingers for 3–5 minutes 保持手掌溫暖 Keep palms warm
🟦 小知識 Mini Note(中英對照)
Koala:
為什麼手工藝者或搬運工 MCP 容易疼痛? Why do artisans or movers often have MCP pain?
BOSS 醫生:
因為 MCP 承擔手指力量的最主要傳導,長時間負荷就容易疲勞或受傷。 Because the MCP transmits most finger force; prolonged load leads to fatigue or injury.















