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The Anatomical Studies and Clinical Significance of Ulnar Nerve in Cubital Tunnel Segment

Author: LiaoYong
Tutor: FanSongQing
School: Nanhua University
Course: Human Anatomy,Histology and Embryology
Keywords: Elbow Ulnar nerve Dissection Cubital tunnel syndrome
CLC: R322
Type: Master's thesis
Year: 2010
Downloads: 37
Quote: 0
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Abstract


The aim of the present study was cubital tunnel syndrome factors associated anatomical studies provide detailed anatomical basis for the clinical treatment of cubital tunnel syndrome. Materials and Methods 32 dry humerus specimens, which left 16, right 16. 10% formalin the fixed complete normal adult chest cadavers 20 cases, including 12 males and 8 females. Fresh adult cadavers nine cases, including 5 males and 4 females. Measuring dry humerus specimens ulnar nerve ditch length, width, depth and width of the medial epicondyle. 2 of the 29 adult patients with thoracic cadavers (17 men, 12 women) Gross Anatomy, layered cut the skin and superficial fascia, deep fascia and muscle anatomy of the ulnar nerve. Measuring the length of the pipe elbow, the width and ulnar nerves of the depth of the middle of the pipe elbow. 3 position of the the observation 20 sides of adult chest cadavers ulnar nerve and ulnar nerve passive elbow extension length. 20 cases (12 males, 8 females) adult chest cadavers anatomy observed measurement elbow posterior wall length, cut elbow posterior wall of the ulnar nerve moved forward, the maximum distance measured forward. 5.29 cases of anti-corrosion adult chest cadavers observed and measured the ulnar nerve blood supply and blood vessels outside diameter and vessel length data, two fresh chest cadavers to simulate the clinical ulnar nerve advancement technique. Results 1 dry humerus specimen length of the ulnar nerve ditch: the left 23.34 ± 3.52mm, the right side of 23.18 ± 3.72mm; Dry humerus specimens feet neural groove width: the left 13.14 ± 2.56mm, right side 13.18 ± 2.74mm; Dry humerus specimens feet neural groove depth: 7.95 ± 0.76mm, left side, right side and 7.92 ± 0.86m. Cadaveric elbows length 24.00 ± 4.12 mm male, female 22.10 ± 4.41mm; elbow width of male 6.12 ± 0.82 mm, female 6.08 ± 0.96 mm; elbows middle of the depth of male 5.24 ± 1.12mm, female 5.18 ± 1.42mm. Elbow extension position (0 degrees) to completely elbow-bit (135 degrees), the ulnar nerve can be stretched 6.6% ± 0.3% (X ± s self-control); flexion greater than 90 degrees, stretching significantly reduced, was 0.8% ± 0.1%. Elbow posterior wall length: males and 18.74 ± 2.52mm, women 18.48 ± 2.72mm; the cut elbow posterior wall will be the medial ulnar nerve moved forward in front of the medial epicondyle subcutaneous, the largest forward the distance: male 15.50 ± 3.00mm, women 14.20 ± 3.90mm. 5 ulnar nerve blood supply of three sources: the ulnar collateral artery, inferior ulnar collateral artery ulnar recurrent artery branch, three starting outside diameter of the artery were 1.8 ± 0.5mm, 1.4 ± 0.3mm to the vertical distance of the ulnar nerve and 1.8 ± 0.4mm; 15.1 ± 4.2mm, 24.6 ± 7.2mm and 17.8 ± 5.6mm; the three artery to the medial epicondyle of the distance from the beginning were 141.0 ± 26.0 mm, 45.2 ± 1.4mm and 62.0 ± 4.2mm; the its trunk issued parts to the parts of the distance into the ulnar nerve is 145.0 ± 4.3mm, 48.6 ± 8.2mm and 65.2 ± 9.3mm respectively. Ulnar nerve at the elbow issue articular branch and muscular branches were 1 to 3. Conclusion 1. Ulnar nerve elbow pipe sections embedded in all of the ulnar nerve trench chimeric more closely, the greater the likelihood of occurrence of cubital tunnel syndrome. Ulnar nerve in the elbow repeated flexion and extension continue to be pulled and oppression caused by the anatomical basis of the ulnar nerve entrapment. 2 clinical surgical treatment of cubital tunnel syndrome, cut elbow posterior wall when you can cut the length of 15.7 ~ 21.8 mm, elbows ulnar nerve Reach distance between 14.2 ~ 15.5mm, does not produce postoperative neurologic The tension increases. The ulnar nerve is displaced from the elbows to the elbow front of the treatment of cubital tunnel syndrome, it is entirely possible to protect its blood supply.

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