The Investigation Of Clamping Factors Of Cubital Tunnel Syndrome And Curative Effect Analysis

Objective:To investigate the clinical factors of ulnar nerve entrapment on elbows and the clinical efficacy of different surgery operations, and to provide novel insights for appropriate operation into future clinical treatment.Methods:A retrospective analysis was undertaken by collecting 33 cases(36 limbs) from the department of orthopedics of our hospital which were diagnosed with cubital tunnel syndrome and undergone operation between October, 2013 and October, 2015. All patients were diagnosed with the help of electromyogram before surgery. The location and severeness of entrapent were detected by type-B ultrasonic. All patients were applied with nerve relaxation and anterior transposition. Follow-ups were carried out regularly after surgery. The locations of entrapent and causes for them were recorded during surgery. All patients were graded by clinical classification. Furthermore, a comprehensive analysis including the causes of disease, ages, courses of disease and clinical efficacies were done after surgery.Results:The follow-up rangde from 0.7 year to 12 months(9.7 months on average). The clinical efficacy was evaluated as the upper limb peripheral nerve function scored according to Chinese Medical Association scoring system. As a result, most patients improved after 1 month from surgery, and recovered in 6 months. 9 cases were scored asexcellent and 17 cases were scored as good, making the good functional recovery rate to75%. From type-B ultrasonic and exploration during surgery, we found that the causes of ulnar nerve entrapent were: epitrochlea(4 cases), Struthers bow(2 cases), medial septum(1 case), ulnar nerve sulcus(12 cases), ends of the flexor carpi ulnaris(17 cases),respectively. The detection of combination of tendon sheath by type-B ultrasonic was24.2 %, which implies it as a critical factor for ulnar nerve entrapent. 4 cases were found to have more than 1 entrapent point, which should draw the attention of doctors during treatment.Conclusion:The results of the study showed thatthe cubital tunnel exit was the most common location for ulnar nerve entrapents. The occurrence of entrapent on boths ends of the flexor carpi ulnaris and cysts were the major causes. Type-B ultrasonic plays an important role in helping diagnosis the location and causes of entrapent. To conclude, it is of great importance to combine multiple detection measures and entirely exclude those factors of entrapent in treating the cubital tunnelsyndrome.