本文選題：拇對掌 + 拇短展肌��； 參考：《暨南大學(xué)》2010年碩士論文

【摘要】： 目的為進一步了解分析拇短展肌的功能解剖,從而幫助臨床尋找解決胸小肌移植重建拇對掌功能術(shù)后出現(xiàn)拇指指間關(guān)節(jié)屈曲畸形而提供解剖學(xué)依據(jù)。 方法通過15例新鮮未固定成人手部標本,對拇短展肌及拇指指間關(guān)節(jié)進行解剖及外力作用下運動角度測量,尋找拇指在對掌位功能后引起拇指指間關(guān)節(jié)屈曲畸形可能原因。在實驗標本中,使拇指處于對掌位時,拇短展肌在未斷及切斷兩種情況下,測量拇指指間關(guān)節(jié)在這兩種情況下自然屈曲變化角度；同時,通過外力作用使拇指指間關(guān)節(jié)分別屈曲處于450及60°時,測量這兩種情況下外力大小變化的情況,從而分析拇短展肌對該拇指指間關(guān)節(jié)屈伸功能的影響情況。 結(jié)果拇指處于對掌位時,拇短展肌在未斷及切斷兩種情況下,拇指指間關(guān)節(jié)自然屈曲角度分別為10°-170及22°-26°。同時,當(dāng)拇指處于對掌位時,拇短展肌在未斷及切斷兩種情況下,使拇指指間關(guān)節(jié)屈曲處于45°時,所用外力分別約0.4牛頓(N)－0.6牛頓(N)及0.1N－0.3N大小,而使拇指指間關(guān)節(jié)屈曲處于60°時,所用外力分別約1.3N-1.6N及1.ON-1.2N大小。對以上所得數(shù)據(jù),分別求得其均數(shù)X、標準差S及X±S,并且分別進行配對t檢驗。 結(jié)論根據(jù)測量及檢驗結(jié)果所得,拇短展肌對拇指指間關(guān)節(jié)主要起背伸活動作用,當(dāng)拇短展肌斷裂后,即所作用外力減少,拇指指間關(guān)節(jié)屈曲角度增大,因此胸小肌移植重建拇對掌功能時,應(yīng)重建拇短展肌功能,才有可能糾正在拇對掌功能重建術(shù)后出現(xiàn)的拇指指間關(guān)節(jié)屈曲畸形。
[Abstract]:Objective to further analyze the functional anatomy of abductor pollicis brevis and to provide anatomic basis for solving the flexion deformity of interphalangeal joint of thumb after transplantation of pectoralis minor muscle for reconstruction of thumb metacarpal function. Methods 15 fresh unfixed adult hand specimens were dissected from abductor pollicis brevis muscle and interphalangeal joint of thumb and the angle of motion under the action of external force was measured to find out the possible causes of flexion deformity of interphalangeal joint caused by the function of thumb in the opposite metacarpal position. In the experimental specimens, when the thumb was placed in the opposite palm, the abductor pollicis brevis muscle was measured in both cases of the interphalangeal joint of the thumb and the natural flexion angle of the interphalangeal joint of the thumb under these two conditions; at the same time, When the flexion of the interphalangeal joint of the thumb was at 450 擄and 60 擄, the changes of the external force were measured, and the effect of the abductor pollicis brevis muscle on the flexion and extension function of the interphalangeal joint of the thumb was analyzed. Results the natural flexion angles of the interphalangeal joint of the thumb were 10 擄-170 and 22 擄-26 擄, respectively, when the thumb was in the opposite metacarpal position and the abductor pollicis brevis muscle was not broken or cut off. At the same time, when the thumb is in the opposite position, when the abductor pollicis brevis muscle is not broken or cut off, when the flexion of the interphalangeal joint of the thumb is at 45 擄, the external forces used are about 0.4 Newton (N) -0.6 Newton (N) and 0.1N-0.3N, respectively. When the flexion of the interphalangeal joint of the thumb is at 60 擄, the external forces used are about 1.3N-1.6N and 1.ON-1.2N, respectively. For the above data, the mean X, the standard deviation S and X 鹵S are obtained, and the paired t test is carried out respectively. Conclusion according to the results of measurement and examination, the abductor pollicis brevis mainly acts on the interphalangeal joint of the thumb. When the abductor pollicis brevis muscle breaks, the external force decreases and the flexion angle of the interphalangeal joint of the thumb increases. In order to correct the flexion deformity of the interphalangeal joint of thumb after the reconstruction of thumb to palmar function, the abductor pollicis brevis function should be reconstructed when the pectoralis minor muscle transplantation is used to reconstruct the function of thumb opposite palm.
【學(xué)位授予單位】：暨南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2010
【分類號】：R322

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