Radiological Analysis of the Cubital Tunnel |
Sae Hoon Kim, Moon Sang Chung, Sang Lim Lee, Goo Hyun Baek |
주관의 방사선학적 분석 |
김세훈, 정문상, 이상림, 백구현 |
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Abstract |
Purpose The cause of idiopathic cubital tunnel syndrome has not been clearly understood. Bony anatomy of the cubital tunnel may be related to the cause of this syndrome. This study is to measure some X-ray parameters of the cubital tunnel which can be used to understand the pathology of the cubital tunnel syndrome. Materials and Methods: Two hundred twenty eight elbows in 114 adults (59 males and 55 females) were recruited on a volunteer basis. All of them had no history of previous surgery, trauma, congenital anomaly, or sign and symptoms suggestive of a disorder of elbows. Their age was 21.6 (range, 18~53) years in average. Anteroposterior view with full flexion and 20 degree of external rotation of the elbow, which was devised to view ulnar groove of humerus precisely, were taken. An angle between inferior margin of medial epicondyle of the humerus and medial surface of trochlea, Cubital Tunnel Angle (CTA), was measured. Depth of this CTA, Cubital Tunnel Depth (CTD), was also measured. The Student’s t-test was used for the statistical analysis. Results: Mean value and standard deviation of CTA was 93.40±8.89�(overall), 91.20±7.46�(male), and 95.76±9.69�(female). Mean value and standard deviation of CTD was 5.48±0.97 mm (overall), 6.00±0.87 mm (male), and 4.93±0.76 mm (female). The differences for two parameters between male and female were statistically significant (p < 0.0001 for CTD and CTA). Conclusion: We may assume geometry of cubital tunnel is related to pathology of entrapment of ulnar nerve. This data from normal volunteers may help us to understand one of possible pathologies of cubital tunnel syndrome. |
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