Newcastle approach to the elbow, a cadaveric study.

Area of Science:

• Orthopedic Surgery
• Anatomy

Background:

• Posterior elbow approaches are crucial for distal humerus procedures.
• Evaluating exposure ratios is key to surgical technique selection.

Purpose of the Study:

• To quantify the distal humerus articular surface exposure provided by the Newcastle approach.
• To compare the Newcastle approach with other posterior elbow surgical exposures.

Main Methods:

• Twenty-four cadaveric elbows were randomized into four groups.
• Four posterior surgical approaches were tested: triceps reflecting, triceps splitting, olecranon osteotomy, and the Newcastle approach.
• The ratio of exposed articular surface was calculated and compared for each approach.

Main Results:

• The Newcastle approach yielded the highest exposure ratio (0.75 ± 0.12).
• Olecranon osteotomy (0.51 ± 0.1), triceps reflecting (0.37 ± 0.08), and triceps splitting (0.35 ± 0.07) showed significantly less exposure.
• The Newcastle approach demonstrated statistically significant superior exposure compared to all other methods (p < 0.0001).

Conclusions:

• The Newcastle approach provides substantial distal humerus exposure.
• This technique is suitable for elbow arthroplasty and complex fracture fixation.
• The study supports the clinical utility of the Newcastle approach.