The image is a page from a document, likely a textbook or educational material, focusing on orthopedic surgery. The page is divided into several sections with headings and bullet points, providing information about different surgical techniques.

1. **Section 3: Truong Hop Xac Dinh**:
   - This section discusses the principles of surgical procedures.
   - It mentions that surgical procedures are based on the principles of orthopedic surgery, which involves the treatment of injuries to the bones, joints, muscles, tendons, ligaments, and nerves.

2. **Section 4: Truong Hop Nhat Nghiep Cau Thuc Cai Liem**:
   - This section focuses on the principles of surgical procedures for the treatment of fractures.
   - It explains that surgical procedures for fractures involve the use of various instruments and techniques to stabilize the broken bone and provide pain relief.

3. **Section 5: Truong Hop Nhat Nghiep Cau Thuc Ch