Addition of a Second Calcaneal Pin for Spanning Ankle External Fixation

Area of Science:

• Orthopedic Surgery
• Trauma Care

Background:

• Spanning ankle external fixation is standard for lower extremity fractures.
• A single calcaneal pin is traditionally used for traction and stabilization.
• Complications include infection and pin loosening, risking fracture reduction loss.

Purpose of the Study:

• To evaluate the benefits of using a second calcaneal pin.
• To decrease infection and pin loosening rates.
• To enhance fracture reduction stability.

Main Methods:

• Two centrally threaded Schanz pins placed in the calcaneal safe zone, 2 cm apart.
• Pins connected by clamps and a carbon fiber rod.
• Standard external fixation assembly after fracture reduction.

Main Results:

• The addition of a second calcaneal pin can mitigate complications.
• Particularly beneficial in patients with decreased bone quality.
• Reduces the incidence of pin loosening and subsequent loss of reduction.

Conclusions:

• A second calcaneal pin technique improves outcomes in spanning ankle external fixation.
• Enhances stability and reduces complications, especially in osteoporotic bone.
• Offers a valuable modification for complex fracture management.