📜🧑‍🎨 達文西聊天室 Da Vinci’s Chatroom｜Episode 3：三角骨（Triquetrum）

📜🧑‍🎨 達文西聊天室 Da Vinci’s Chatroom｜Episode 3：三角骨（Triquetrum） 在達文西的素描中，三角骨位於手腕小指側，像一個穩固的支點，與月狀骨及豆狀骨緊密連結。它雖小，卻是手腕穩定與旋轉的重要骨頭。 In Da Vinci’s sketches, the triquetrum is located on the ulnar (little finger) side of the wrist, acting as a stable pivot connecting the lunate and pisiform. Though small, it is crucial for wrist stability and rotation. 三角骨，是手腕小指側承重與協調運動的重要骨頭。 The triquetrum is a key carpal bone on the ulnar side, supporting load transfer and coordinated motion. --- 🔬 解剖位置（Anatomical Location） 三角骨位於近側腕骨列，靠近小指一側，與月狀骨、豆狀骨及腕橈關節韌帶相連。 The triquetrum sits in the proximal carpal row on the ulnar side, articulating with the lunate, pisiform, and wrist ligaments. 形狀：不規則三角形 / Irregular triangular 關節面：與三塊骨頭接觸 / Articulates with three bones --- ⚙️ 主要功能（Primary Functions） 1️⃣ 承重 / Load-bearing 承擔小指側手腕力量，協助手腕穩定。 Bears force on the ulnar side of the wrist, aiding stability. 2️⃣ 協調旋轉 / Rotation coordination 與月狀骨和舟狀骨協同，完成手腕旋前旋後動作。 Works with the lunate and scaphoid for wrist pronation and supination. 3️⃣ 手腕穩定 / Wrist stabilization 連結鄰近腕骨與韌帶，維持手腕結構完整性。 Connects neighboring carpals and ligaments, maintaining wrist integrity. --- 🏥 臨床意義（Clinical Significance） 三角骨骨折雖少見，但手腕外傷時仍需注意。 Triquetrum fractures are rare but should be considered in wrist trauma. 常見症狀：小指側手腕痛、腫脹 / Symptoms: ulnar-side wrist pain, swelling 可能伴隨月狀骨異常受力 / May be associated with lunate stress 早期固定與復健可避免慢性疼痛 / Early immobilization and rehab prevent chronic pain --- 🧠 達文西觀點（Da Vinci’s Insight） 達文西認為三角骨是「手腕的小支點」，支撐整個小指側手腕運動。 Da Vinci regarded the triquetrum as the “small pivot of the wrist,” supporting motion on the ulnar side. 它雖不起眼，但缺少它手腕旋轉與穩定度就會受影響。 Though inconspicuous, without it wrist rotation and stability are compromised. --- 👨‍⚕️ BOSS Doctor 臨床觀察 / Clinical Observation by Dr. BOSS 三角骨骨折或韌帶受損時，常伴隨月狀骨或尺骨不穩，造成手腕疼痛與握力下降。 Fractures or ligament injuries of the triquetrum often coincide with lunate or ulna instability, causing wrist pain and weakened grip.