Intraneural ulnar nerve pressure changes related to operative techniques for cubital tunnel decompression

Association Between the Elbow Flexion Test and Extraneural Pressure Inside the Cubital Tunnel

“…6,13,26 On the other hand, all the measured extraneural pressures in the cubital tunnel were higher than 0 mmHg in cadaveric studies. 5,11,14,16,17 One of the possible reasons for this could be the elasticity of the specimens investigated. It is known that cadaveric specimens are dry and stiff, whereas intraoperative tissues of a living human are wet and have viscoelasticity.…”

Comparative Clinical Outcomes of Submuscular and Subcutaneous Transposition of the Ulnar Nerve for Cubital Tunnel Syndrome

“…23 These factors, which contribute to the neuropathy, may be effectively relieved by ulnar nerve transposition. In a cadaveric biomechanical study, Dellon et al 24 demonstrated that ulnar nerve transposition and musculofascial lengthening reduced intraneural pressure both in elbow extension and in 30°, 60°, or 90°of flexion by a minimum of 40% compared with that in simple decompression, medial epicondylectomy, and the subcutaneous or Learmonth transposition. 3 In advanced stages of compressive neuropathy, perineural and intraneural fibrosis may occur resulting in decreased nerve mobility in elbow flexion.…”

Comparison of two medial epicondylectomy techniques in cubital tunnel syndrome

“…This is supported by the finding of failure of reduction of intraneural pressures by in situ decompression in cadaver studies. [24] Anterior transposition has also been reported to reveal significant improvement in clinical signs and symptoms. However, in some studies, this technique was reported to have less favorable results and increased risk of complications when compared with both in situ decompression and medial epicondylectomy.…”