Orthopedic Hip Replacement Implants Surgical Techniques

🦴 ORTHOPEDIC HIP REPLACEMENT IMPLANTS

🔧 SURGICAL TECHNIQUE (TOTAL HIP ARTHROPLASTY – THA)

1. 📋 Preoperative Planning

Clinical Evaluation

• Indications:

  • Osteoarthritis

  • Rheumatoid arthritis

  • Avascular necrosis (AVN)

  • Femoral neck fractures

• Assess:

  • Limb length discrepancy

  • Range of motion

  • Gait abnormalities

Imaging & Templating

• X-ray pelvis with both hips (AP view)

• Digital templating to determine:

  • Acetabular cup size

  • Femoral stem size

  • Neck length & offset

Implant Selection

• Cemented / Cementless

• Bearing surfaces:

  • Metal-on-polyethylene

  • Ceramic-on-ceramic

  • Ceramic-on-polyethylene

2. 🛏️ Patient Positioning & Setup

Position Options

• Lateral decubitus (most common)

• Supine (for anterior approach)

Preparation

• Regional or general anesthesia

• Foley catheter if required

• Prophylactic antibiotics

• Sterile draping

3. 🔪 Surgical Approaches

A. Posterior Approach (Most Common)

• Incision centered over greater trochanter

• Split gluteus maximus

• Detach short external rotators

B. Lateral (Hardinge) Approach

• Split gluteus medius

C. Anterior Approach

• Intermuscular, minimally invasive

👉 Choice depends on surgeon preference and patient anatomy.

4. 🦴 Femoral Head Dislocation & Neck Osteotomy

Steps:

1. Dislocate hip joint

2. Identify femoral neck

3. Perform osteotomy at pre-planned level

4. Remove femoral head

5. 🧱 Acetabular Preparation

Steps:

1. Expose acetabulum

2. Remove labrum and osteophytes

3. Sequential reaming:

   • Maintain correct inclination (~40–45°)

   • Maintain anteversion (~15–20°)

4. Achieve hemispherical cavity

6. 🧩 Acetabular Cup Placement

Cementless Technique:

• Press-fit cup into acetabulum

• Add screws if required

Cemented Technique:

• Apply bone cement

• Insert cup and hold until set

Liner Insertion:

• Insert polyethylene/ceramic liner

👉 Ensure stable fixation and proper orientation.

7. 🪛 Femoral Canal Preparation

Steps:

1. Open femoral canal

2. Sequential broaching:

   • Maintain proper alignment

   • Avoid varus positioning

3. Prepare canal for stem

8. 🔩 Femoral Stem Insertion

Cementless Stem:

• Press-fit fixation

Cemented Stem:

• Cement inserted into canal

• Stem inserted with proper version

👉 Maintain:

• 10–15° anteversion

• Proper depth for leg length restoration

9. ⚙️ Trial Reduction

Steps:

1. Place trial head and neck

2. Reduce hip joint

3. Assess:

   • Stability

   • Range of motion

   • Limb length

4. Adjust components if needed

10. 🧿 Final Implant Placement

Steps:

1. Insert final femoral head

2. Reduce hip joint

3. Confirm:

   • Stability

   • No impingement

   • Equal limb length

11. 🧼 Wound Closure

• Irrigation with saline

• Repair soft tissues:

  • Capsule

  • Muscles

• Layered closure

• Drain placement (if required)

• Sterile dressing

12. 🏥 Postoperative Protocol

Immediate Care

• Pain management

• DVT prophylaxis

• Early mobilization (within 24 hours)

Rehabilitation

• Physiotherapy:

  • Gait training

  • Muscle strengthening

• Weight-bearing:

  • As tolerated (cementless may vary)

13. ⚠️ Complications & Prevention

Complication Prevention

Dislocation

Proper component positioning

Infection

Sterile technique, antibiotics

DVT/PE

Anticoagulation

Leg length discrepancy

Accurate templating

Implant loosening

Proper fixation

14. 🔓 Follow-Up & Recovery

• Regular X-rays

• Monitor implant position

• Full recovery: ~3–6 months

15. ✅ Key Surgical Principles

• Restore biomechanics of hip

• Ensure stable fixation

• Maintain soft tissue balance

• Achieve accurate alignment

• Enable early mobilization

🌟 Advantages of Modern Hip Implants

• Improved mobility

• Pain relief

• Long implant lifespan

• Biocompatible materials

• Minimally invasive approaches

📌 Conclusion

Hip replacement systems from Jindal Medi Surge follow globally accepted arthroplasty techniques, ensuring:

• Reliable fixation

• Anatomical restoration

• Enhanced patient outcomes