Cubital tunnel
The elbow:
review of anatomy and common collateral ligament complex pathology using MRI. A 25-year-old man with pain and medial instability after a fall on an outstretched hand. Axial T1-weighted MRI (a) showing the intact right posterior bundle of the medial collateral ligament complex of a healthy volunteer (white arrowhead). Axial FS PD-weighted MRI (b) showing an acute tear of the left posterior bundle of the medial collateral ligament complex (white arrow), inflammatory changes in the soft tissue of cubital tunnel (white asterisk), displacement and flattening of the ulnar nerve (yellow arrow), and joint effusion (black asterisks)
The cubital tunnel is a space through which the ulnar nerve passes posterior to the medial epicondyle of the humerus.
Gross anatomy
Boundaries
- roof
- cubital tunnel retinaculum (also known as ligament or band of Osborne), extends from the olecranon to the medial epicondyle
- anconeus epitrochlearis (when present)
- laterally: olecranon process
- medially: medial epicondyle
- floor: elbow joint capsule, posterior band of medial collateral ligament of the elbow joint
Contents
- ulnar nerve
- fat
Related pathology
Siehe auch:
Assoziationen und Differentialdiagnosen zu Sulcus ulnaris: