Minimally invasive technique for coxofemoral luxation stabilisation using transarticular toggle system: a cadaveric...

Area of Science:

• Veterinary surgery
• Orthopedics
• Biomechanical engineering

Background:

• Coxofemoral luxation is a common orthopedic injury in animals.
• Current surgical stabilization techniques can be invasive.
• There is a need for minimally invasive and effective methods for hip joint stabilization.

Purpose of the Study:

• To present a novel, semi-closed surgical technique for coxofemoral luxation stabilization.
• To evaluate the feasibility and accuracy of using a transarticular toggle rod system.
• To assess potential complications associated with the technique.

Main Methods:

• A cadaveric study involving 12 coxofemoral joints with induced craniodorsal luxation.
• Reduction using a closed technique followed by arthroscopic-guided transarticular toggle rod placement.
• Measurement of anteversion and inclination angles, and assessment of toggle rod placement accuracy and cartilage damage.

Main Results:

• The transarticular toggle rod technique demonstrated accurate placement into the acetabular fossa (mean distance 0.06 ± 0.1 mm).
• The toggle rod exit point from the femoral head was also accurately placed (mean distance 2.04 ± 1.7 mm).
• Femoral head cartilage damage was observed in 9 out of 12 joints.

Conclusions:

• A novel, semi-closed, minimally invasive surgical technique for coxofemoral luxation stabilization using a transarticular toggle rod is presented.
• The technique allows for closed reduction and stabilization of hip luxations.
• Further refinements are necessary to mitigate the incidence of femoral head cartilage damage before widespread clinical application.