一位骨質疏鬆症病人，下列哪項預防骨折的指導最重要？
A nurse is teaching a client with osteoporosis. Which instruction is priority for fracture prevention?
- AAvoid all physical activity避免所有體力活動
- BUse a walker at all times始終使用助行器
- CIncrease calcium intake to 2000mg/day將鈣質攝取量增加至每日2000毫克
- DPerform weight-bearing exercises✓ 正解進行負重運動
骨質疏鬆症（Osteoporosis）的照護核心在於維持骨密度與預防跌倒。負重運動能透過機械壓力刺激成骨細胞活性，進而增加骨質密度。臨床照護中，預防骨折應優先評估病人的活動能力與跌倒風險，並指導正確的運動方式。選項 C 的劑量過高且未考慮膳食來源；選項 A 與 B 則可能導致活動功能喪失與肌肉萎縮，反而增加跌倒與骨折風險。
The core of osteoporosis care is maintaining bone density and preventing falls. Weight-bearing exercise stimulates osteoblast activity through mechanical loading and thereby increases bone density. In clinical care, prevention of fracture should give priority to assessing the patient's activity capability and fall risk and to teaching proper exercise techniques. The dose in option C is too high and does not consider dietary sources; options A and B may lead to loss of function and muscle atrophy, which actually increase the risk of falls and fractures.