📜🧑‍🎨 達文西聊天室 Da Vinci’s Chatroom｜Episode 7：頭狀骨（Capitate）

📜🧑‍🎨 達文西聊天室 Da Vinci’s Chatroom｜Episode 7：頭狀骨（Capitate） 在達文西的解剖素描中，頭狀骨位於手腕遠側列的中心位置，是遠側腕骨中最大的一塊骨頭，如同手腕的「中樞支柱」，承接腕骨與掌骨的力量傳導。 In Da Vinci’s sketches, the capitate sits at the center of the distal carpal row. It is the largest distal carpal bone, acting as the “central pillar” of the wrist, transmitting forces between carpal and metacarpal bones. 頭狀骨，是手腕中央穩定與力量傳導的核心骨頭。 The capitate is the core bone for central wrist stability and force transmission. --- 🔬 解剖位置（Anatomical Location） 頭狀骨位於手腕遠側列中心，與小多角骨、大多角骨、第三掌骨、頭狀骨及月骨接觸。 The capitate is centrally located in the distal carpal row, articulating with the trapezoid, trapezium, third metacarpal, lunate, and hamate. 形狀：圓柱狀 / Cylindrical 關節面：多面關節，提供多方向穩定 / Multiarticular surfaces provide multidirectional stability --- ⚙️ 主要功能（Primary Functions） 1️⃣ 中央支柱 / Central pillar 承接遠側腕列與掌骨的力量，保持手腕整體穩定。 Transmits forces between distal carpals and metacarpals, maintaining overall wrist stability. 2️⃣ 手腕活動協調 / Wrist motion coordination 協助屈伸、旋轉及側向動作，穩定手腕中央。 Assists wrist flexion, extension, rotation, and lateral movements, stabilizing the central wrist. 3️⃣ 力量傳導 / Force transmission 將手掌與腕骨間的力量平均分散，減少局部受力。 Evenly distributes forces between metacarpals and carpal bones, reducing localized stress. --- 🏥 臨床意義（Clinical Significance） 頭狀骨骨折為遠側腕骨最常見的骨折之一，尤其在手腕受撞擊或跌倒時。 Capitate fractures are among the most common distal carpal fractures, often caused by wrist impact or falls. 常見症狀：手腕中央疼痛、腫脹 / Symptoms: central wrist pain, swelling 活動受限，抓握力下降 / Limited motion, reduced grip strength 影響遠側腕列與掌骨協調 / Affects distal carpal-metacarpal coordination --- 🧠 達文西觀點（Da Vinci’s Insight） 達文西視頭狀骨為「手腕的中樞支柱」，所有腕掌力量都依賴它傳導。 Da Vinci regarded the capitate as the “central pillar of the wrist,” with all wrist-to-hand forces transmitted through it. 中央穩定性不足，手腕容易受力異常，導致疼痛或退化。 Insufficient central stability can cause abnormal wrist loading, leading to pain or degeneration. --- 👨‍⚕️ BOSS Doctor 臨床觀察 / Clinical Observation by Dr. BOSS 頭狀骨受傷或穩定性不足時，手腕整體動作會受影響，尤其抓握與旋轉動作。 Capitate injury or instability affects overall wrist motion, particularly grip and rotational movements. 復健應以中央穩定為重點，協調遠側腕列與掌骨活動。 Rehab should focus on central stability, coordinating distal carpal and metacarpal motion.