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共统计50个(男性、女性各25个)1—9岁儿量尸体共计100例上肢。观察尺神经在臂及前臂发出肌肢及肘关节支的情况以及尺神经与正中神经在前臂吻合的情况。 1.尺神经发出关节支至肘关节,关节支的数量是1—3支,其发出的部位有三:在肱骨内上髁以上发出的37例,占37％;在平肱骨内上髁处发出的36例,占36％;在肱骨内上髁以下发出的27例,占27％;由第一支起始点至肘关节囊的距离为0.2—1.8厘米。 2.尺神经发出肌支,以总干分支支配尺侧屈腕肌及屈指深肌的8例,占8％;支配屈指浅肌的9例,占9％;以总干分支支配尺侧屈腕肌及肘关节的14例,占14％;分别分支支配尺侧屈腕肌及屈指深肌的69例,占69％。其第一肌支发出的部位有三:在肱骨内上髁以上发出的七例,占7％;在平肱骨内上髁处发出的4例,占4％;在肱骨内上髁以下发出的89例,占89％。其最后肌支都在肱骨内上髁以下发出。第一肌支支配尺侧屈腕肌的80例,占80％;支配屈指浅肌的4例,占4％;以总干分细支支配尺侧屈腕肌及屈指深肌的1例,占1％;以总干分细支支配尺侧屈腕肌及屈指浅肌的1例,占1％;以总干分细支支配尺侧屈腕肌与肘关节的14例,占14％。最后肌支支配尺侧屈腕肌的18例,占18％;支配屈指深肌的77例,占77％,支配屈指浅肌的2例,占2％;以总干分两支分别支配屈指浅肌及尺侧屈腕肌的1例,占1％;以总干分两支分别支配屈指深肌及尺侧屈腕肌的1例,占1％;以总干分为两支分别支配屈指浅肌及屈指深肌的1例,占1％。至各肌的肌支数量是1—4支。 3.100例上肢中发现尺神经与正中神经之间在前臂前面有吻合的30例,占30％,较高于国外作者统计的百分率。其中对称的9例,不对称的21例。吻合的部位都是在屈指浅肌尺侧头与屈指深肌近侧端之间,或在屈指深肌之内;根据吻合支结合的形态特征可将吻合区分为襻型(17例)、“V”字型(4例)、“Y”字型(3例)及直綫型(6例)四种。
A total of 50 (male and female 25) 1-9-year-old children a total of 100 cases of upper extremity. Observe ulnar nerve in the arm and forearm muscle limbs and elbow branch of the situation and the ulnar nerve and median nerve anastomosis in the forearm. 1 ulnar nerve articulation to the elbow, the number of joint branch is 1-3, the issue of three parts: the epicondyle in the humerus more than 37 cases issued, accounting for 37%; in the lateral humeral epicondyle Department issued Of the 36 cases, accounting for 36%; in the humeral epicondyle the following 27 cases, accounting for 27%; from the first starting point to the elbow capsule distance of 0.2-1.8 cm. 2 ulnar nerve issued a muscular branch to the total trunk branch to rule ulnar flexor carpal and flexor digitorum deep 8 cases, accounting for 8%; 9 cases of dorsal flexor musculus, accounting for 9%; the total trunk branch ruler ulna Carpal muscles and elbow in 14 cases, accounting for 14%; respectively, the branch dominates the ulnar flexor carpi muscles and flexors in 69 cases, accounting for 69%. The first muscular branch of the issued three parts: the supracondylar in the humerus issued more than seven cases, accounting for 7%; in the horizontal humeral epicondyle at the 4 cases, accounting for 4%; issued below the medial epicondyle For example, 89%. The final muscular branch of the humerus are sent below the epicondyle. The first branch of the branch dominates the ulnar flexor carpal muscle in 80 cases, accounting for 80%. Four cases dominate the flexor superficialis muscle, accounting for 4%. One case of the ulnar flexor carpi ulnaris and flexor digitorum longus, Accounting for 1%; 1 case of ulnar flexor carpal muscle and flexor superficialis musculoskeletal were accounted for 1% according to the total dry branch; 14 cases of ulnar flexor carpal muscle and elbow joint dominated by the total dry branch, . The last branch of the wrist dominates the ulnar flexor carpal muscles in 18 cases, accounting for 18%. 77 cases dominate the flexor digitorum muscle, accounting for 77%, 2 cases dominate the superficial flexor muscle, accounting for 2%; 1 case of superficial and lateral ulnar flexor carpal muscle, accounting for 1%; 1 case of total musculoskeletal branch and 1 case of ulnar flexor carpal muscle, respectively 1 case of flexor forearm and flexor digitorum muscle, accounting for 1%. The number of muscle branches to each muscle is 1-4. 3.100 cases found in the upper extremity ulnar nerve and median nerve in front of forearm anastomosis in 30 cases, accounting for 30%, higher than the percentage of foreign authors statistics. Symmetrical in 9 cases, 21 cases of asymmetry. The anastomosed sites were all between the superficial peduncles of the flexors and the proximal ends of the flexors, or within the flexors of the flexors. According to the morphological features of the anastomoses, the anastomoses were divided into seven types: V “(4 cases),” Y "(3 cases) and linear (6 cases).