Drynaria fortunei (Gu Sui Bu), renowned as the "Bone Mender" in Traditional Chinese Medicine (TCM), offers multifaceted benefits: tonifying kidneys and strengthening bones, healing trauma and relieving pain, nourishing liver-kidney, warming meridians to dispel cold, and activating blood to resolve stasis.  

Core Therapeutic Actions  

1. Tonifies Kidneys and Strengthens Bones  

   - Mechanism: Targets kidney meridian , combats osteoporosis, weakness in lower back/knees, and leg fatigue caused by kidney qi deficiency.  

2. Heals Trauma and Relieves Pain  

   - Applications: Accelerates fracture healing, reduces swelling/pain from injuries or falls.  

3. Nourishes Liver and Kidneys 

   - Indications: Tinnitus, hearing loss, loose teeth due to liver-kidney deficiency .  

4. Warms Meridians and Dispels Cold   

   - Properties: Warm nature; alleviates joint pain and numbness from cold invasion .  

5. Activates Blood and Resolves Stasis 

   - Uses: Reduces stiffness and pain in rheumatic conditions (fēngshī bìtòng).  

Pharmacological Insights  

- Bone Regeneration: Stimulates osteoblast activity and calcium deposition.  

- Anti-Inflammatory: Suppresses COX-2 and inflammatory cytokines.  

Clinical Applications  

- Orthopedics: Non-union fractures, post-surgical bone repair.  

- Geriatrics: Age-related osteoporosis, degenerative joint pain.  

- Rheumatology: Osteoarthritis, cold-damp bi syndrome.  

Critical Precautions  

1. Dosage Control:  

   - Standard decoction: 6–12g daily. Overuse may cause dry mouth or GI discomfort.  

2. Contraindications:  

   - Yin deficiency with fire excess : May aggravate heat symptoms.  

   - Bleeding disorders (may thin blood).  

3. Professional Guidance:  

   - Always use under TCM practitioner supervision.  

> TCM Wisdom  

Drynaria exemplifies the integration of traumatology (shāng kē) and internal medicine (nèi kē) in Chinese medicine. Its efficacy hinges on accurate pattern differentiation.  

Nature’s bone knitter—handle with expertise.