Arthroscopic Talar Dome Access Using a Standard Versus Wire-Based Traction Method for Ankle Joint Distraction

Area of Science:

• Orthopedic Surgery
• Arthroscopy Techniques
• Anatomy

Background:

• The talar dome is crucial for ankle joint function.
• Accessing the posterior talar dome via anterior arthroscopy can be challenging.
• Distraction techniques are vital for effective ankle arthroscopy.

Purpose of the Study:

• To compare the accessibility of the talar dome using standard noninvasive distraction versus calcaneal tuberosity wire-based distraction for ankle arthroscopy.
• To evaluate accessibility through both anterior and posterior arthroscopic portals.

Main Methods:

• Seven matched pairs of cadaveric thigh-to-foot specimens were used.
• Ankle arthroscopy was performed using either noninvasive strapping or calcaneal tuberosity wire distraction.
• The area of the talar dome accessed was measured using a translucent grid for both anterior and posterior portals.

Main Results:

• Anterior ankle arthroscopy showed comparable talar dome accessibility between noninvasive (57.8%) and wire-based (61.5%) distraction.
• Calcaneal wire distraction significantly improved posterior talar dome accessibility (56.4%) compared to noninvasive distraction (39.8%).

Conclusions:

• Calcaneal wire-based distraction provides equivalent talar dome access for anterior ankle arthroscopy compared to noninvasive methods.
• Wire-based distraction significantly enhances talar dome access for posterior ankle arthroscopy.