Admission 24 hours prior. Keep NPO for 8 hours. Baseline CBC, electrolytes, and coagulation profile. CT scan of the affected foot for surgical planning. Prophylactic IV antibiotics administered 60 minutes before incision. Lateral swelling must be managed prior to surgery, often requiring delayed intervention until skin wrinkles appear.
Post-operative immobilization in a non-weight-bearing splint for 2 weeks. Suture removal at 14 days. Strict non-weight-bearing status for 8 to 12 weeks post-operatively. Early range-of-motion exercises for the ankle and toes are encouraged once the incision heals. DVT prophylaxis is mandatory for the duration of immobilization.
Comprehensive Clinical Guide: Open Reduction and Internal Fixation (ORIF) of Calcaneus Fractures
1. Introduction and Overview
The calcaneus (heel bone) is the most frequently fractured tarsal bone, accounting for approximately 60% of all tarsal fractures. Because the calcaneus serves as the primary weight-bearing foundation for the human skeletal structure, its anatomical restoration is paramount for long-term gait efficiency and pain-free locomotion.
Open Reduction and Internal Fixation (ORIF) for calcaneus fractures is a complex surgical intervention designed to restore the subtalar joint surface, reconstruct the calcaneal height, length, and width, and restore the calcaneocuboid joint. In cases of displaced intra-articular fractures, conservative management often leads to post-traumatic arthritis, chronic pain, and permanent gait abnormalities. ORIF serves as the gold standard for restoring the "Bohler’s angle" and the "Gissane’s angle," which are critical radiographic parameters for functional heel anatomy.
2. Deep-Dive: Technical Specifications and Mechanisms
The calcaneus is a cancellous bone with a thin cortical shell. When subjected to axial loading (e.g., a fall from a height or a motor vehicle accident), it typically undergoes "crush" or "tongue-type" patterns.
The Surgical Mechanism
The primary goal of ORIF is to achieve "anatomic reduction." This involves:
* Restoration of Height: Reversing the collapse of the posterior facet.
* Restoration of Width: Reducing the lateral wall blowout, which often impinges on the peroneal tendons.
* Restoration of Alignment: Correcting the varus deformity of the posterior facet.
Instrumentation
- Low-profile locking plates: Designed to contour to the lateral calcaneal wall.
- Cannulated screws: Used for interfragmentary compression.
- K-wires: Used for temporary stabilization or "joystick" manipulation.
- Bone Grafting: Autograft or allograft/bone substitutes are often required to fill the void (metaphyseal defect) created by the impaction of the posterior facet.
3. Clinical Indications and Patient Selection
Indications for Surgery
Not every calcaneal fracture requires ORIF. Clinical decision-making is heavily dependent on CT imaging (Sanders Classification).
| Classification | Description | Treatment Indication |
|---|---|---|
| Sanders I | Non-displaced | Usually conservative |
| Sanders II | Two-part, displaced | ORIF indicated if displacement >2mm |
| Sanders III | Three-part, displaced | ORIF highly recommended |
| Sanders IV | Comminuted | ORIF or Primary Arthrodesis |
Pre-operative Preparation
- Soft Tissue Assessment: This is the most critical step. The "Wrinkle Sign" must be present before surgery, indicating that the swelling has subsided sufficiently to allow safe incision closure.
- Imaging: Mandatory high-resolution CT scan in coronal, sagittal, and axial planes.
- Medical Clearance: Smoking cessation is strictly enforced, as nicotine significantly increases the risk of wound dehiscence and infection in the poorly vascularized heel area.
4. The Surgical Procedure: Step-by-Step
Step 1: Positioning
The patient is typically placed in a lateral decubitus position. A tourniquet is applied to the thigh to maintain a bloodless field.
Step 2: The Extended Lateral Approach
The "L-shaped" incision is the traditional standard. It is a full-thickness flap designed to protect the lateral calcaneal artery.
* Warning: The sural nerve must be identified and retracted carefully to prevent post-operative neuromas.
Step 3: Lateral Wall Reflection
The lateral wall is reflected inferiorly, providing a "window" into the subtalar joint. This allows direct visualization of the posterior facet.
Step 4: Reduction
The depressed articular surface is elevated using a bone tamp. The "joystick" technique (K-wires) is often used to manipulate the fragments into their anatomical position.
Step 5: Fixation
Once reduced, the fragment is held with K-wires. A calcaneal plate is then applied to the lateral wall. Screws are placed into the sustentaculum tali, which is the most robust part of the calcaneus and provides the best "anchor" for fixation.
Step 6: Closure
Closure is performed in layers. A drain is often left in place for 24–48 hours to prevent hematoma formation, which is the leading cause of wound complications in this surgery.
5. Post-Operative Recovery Protocol
The recovery timeline for a calcaneus ORIF is notoriously long, often spanning 6 to 12 months.
- Phase I (0–2 Weeks): Strict non-weight bearing (NWB) in a splint. Elevation is mandatory to prevent edema.
- Phase II (2–6 Weeks): Transition to a cast or boot. Suture removal at 2 weeks. Gentle range of motion (ROM) for the toes and ankle may begin if the construct is stable.
- Phase III (6–12 Weeks): Gradual transition to weight-bearing as tolerated, typically starting with 25% weight-bearing, progressing to full.
- Phase IV (3+ Months): Physical therapy focusing on subtalar joint mobilization, gait training, and strengthening of the gastrocnemius-soleus complex.
6. Risks, Side Effects, and Contraindications
Risks and Complications
- Wound Dehiscence: The most common complication (up to 20%). The skin of the heel is thin and has poor vascularity.
- Infection: Deep infections can be catastrophic and may require hardware removal.
- Post-Traumatic Subtalar Arthritis: Even with perfect reduction, the cartilage may have suffered irreversible damage during the initial impact.
- Sural Nerve Injury: Results in numbness along the lateral aspect of the foot.
- Peroneal Tendonitis: Caused by hardware prominence or scar tissue formation.
Contraindications
- Active Infection: Cellulitis or osteomyelitis.
- Severe Peripheral Vascular Disease (PVD): Compromises wound healing.
- Uncontrolled Diabetes: Significantly elevates risk of wound necrosis.
- Severe Comminution: In cases where the bone is "like eggshells," ORIF may be impossible, and primary subtalar fusion is preferred.
7. Alternative Treatments
- Conservative Management: Casting and NWB for 8–12 weeks. Best for non-displaced fractures or patients with high surgical risk (e.g., severe neuropathy).
- Percutaneous Fixation: Using small incisions and K-wires or screws. Reduces wound complications but offers less visualization of the joint surface.
- Primary Subtalar Arthrodesis: Fusing the joint immediately. Reserved for severely comminuted fractures where the joint surface cannot be salvaged.
8. Massive FAQ Section: Frequently Asked Questions
1. How long will I be off my feet?
Typically, you will be non-weight bearing for 6 to 12 weeks. Total recovery to full activity can take up to a year.
2. Why is smoking so dangerous before this surgery?
Smoking constricts blood vessels. Because the heel skin is already at high risk for dying (necrosis) after surgery, nicotine can be the difference between a healed incision and a chronic wound infection.
3. Will I develop arthritis?
Even with successful surgery, there is a significant risk of post-traumatic arthritis in the subtalar joint due to the initial cartilage damage during the fracture.
4. What is the "Bohler’s Angle"?
It is a radiographic measurement used to assess the shape of the calcaneus. A normal angle is 20–40 degrees. A flat or negative angle usually indicates a collapse that requires surgical correction.
5. Is hardware removal common?
Hardware removal is occasionally required if the plate becomes prominent and causes pain, or if there is a deep infection.
6. Can I walk normally after the surgery?
Most patients regain a functional gait, but some residual stiffness in the subtalar joint is common, which may affect walking on uneven terrain.
7. How do I know if I have an infection?
Signs include increased redness, warmth, foul-smelling drainage, fever, or chills. Any of these require immediate medical evaluation.
8. What is the "Wrinkle Sign"?
It is a clinical indicator that the swelling has decreased enough to allow the skin to be safely sutured without the risk of it pulling apart (dehiscence).
9. Will I need physical therapy?
Yes. PT is essential to restore range of motion in the ankle and foot, as well as to regain strength in the calf muscles that atrophy during the NWB period.
10. What if my fracture is too broken to fix?
If the bone is severely crushed (Sanders IV), your surgeon may recommend a primary fusion, where the joint is intentionally fused to prevent the long-term pain of arthritic joint surfaces rubbing together.
9. Conclusion
ORIF of the calcaneus is a demanding procedure that requires a highly skilled surgeon and a patient committed to a long, disciplined recovery. By focusing on the restoration of anatomical alignment and the protection of soft tissues, patients can achieve excellent functional outcomes. However, the importance of pre-operative counseling regarding the lengthy recovery period cannot be overstated. Patients must be prepared for the reality of non-weight bearing status and the potential for long-term lifestyle modifications.
Disclaimer: This guide is for educational purposes only and does not constitute medical advice. Always consult with a board-certified orthopedic surgeon regarding your specific fracture and treatment options.