【摘要】：目的研制一種創(chuàng)傷小、并發(fā)癥少的骶髂關(guān)節(jié)固定器械。方法在18具成人骨盆標(biāo)本(男8具,女10具)雙側(cè)髂骨和骶骨上測量與鎖定接骨板和鎖定螺釘設(shè)計(jì)相關(guān)的解剖學(xué)指標(biāo);根據(jù)解剖測量結(jié)果設(shè)計(jì)骶髂關(guān)節(jié)多軸鎖定接骨板螺釘系統(tǒng),采用醫(yī)用鈦合金制作。在4具成年男性骨盆標(biāo)本上,通過生物材料試驗(yàn)系統(tǒng)測試0~700 N垂直載荷及0~12 N·m扭轉(zhuǎn)載荷下,正常骨盆(A組)、骶髂螺釘固定骶髂關(guān)節(jié)脫位(B組)及骶髂關(guān)節(jié)多軸鎖定接骨板螺釘系統(tǒng)固定骶髂關(guān)節(jié)脫位(C組)后,骶髂關(guān)節(jié)位移距離和位移角度。在1具成年男性尸體標(biāo)本上模擬應(yīng)用該系統(tǒng),觀察軟組織破壞程度,攝骨盆X線片觀察鎖定接骨板及鎖定螺釘位置。結(jié)果根據(jù)解剖學(xué)測量結(jié)果成功設(shè)計(jì)并制備了一套骶髂關(guān)節(jié)多軸鎖定接骨板螺釘系統(tǒng)。生物力學(xué)測試結(jié)果表明,0~700 N垂直載荷下,A組位移距離顯著大于B、C組(P0.05),B、C組間比較差異無統(tǒng)計(jì)學(xué)意義(P0.05)。0~12 N·m扭轉(zhuǎn)載荷下,A組位移角度顯著小于B、C組(P0.05);扭轉(zhuǎn)載荷≤6 N·m時(shí)B組位移角度大于C組,6 N·m時(shí)B組小于C組,但差異均無統(tǒng)計(jì)學(xué)意義(P0.05)。在尸體標(biāo)本上安裝該系統(tǒng)時(shí),軟組織破壞少,植釘準(zhǔn)確、安全。結(jié)論骶髂關(guān)節(jié)多軸鎖定接骨板螺釘系統(tǒng)體積較小,操作時(shí)創(chuàng)傷小;多軸向固定,可靈活調(diào)整植釘方向,固定牢固,在尸體標(biāo)本上應(yīng)用固定效果良好。
[Abstract]:Objective to develop a sacroiliac joint fixation instrument with less trauma and less complications. Methods 18 adult pelvic specimens (8 male and 10 female) were used to measure the anatomical parameters related to the design of locking plate and screw on bilateral iliac bone and sacrum. According to the anatomical results, the sacroiliac joint multiaxial locking plate screw system was designed and made of medical titanium alloy. In 4 adult male pelvis specimens, the normal pelvis (group A) was tested under 0 700 N vertical load and 0 12 nm torsional load by a biomaterial test system. After sacroiliac screw fixation of sacroiliac joint dislocation (group B) and sacroiliac joint multiaxial locking plate screw system fixation of sacroiliac joint dislocation (group C), the displacement distance and displacement angle of sacroiliac joint were obtained. The system was simulated on an adult male cadaveric specimen to observe the degree of soft tissue damage, and the position of locking plate and locking screw were observed by pelvic radiography. Results according to the anatomical results, a set of sacroiliac joint multiaxial locking plate screw system was successfully designed and fabricated. The results of biomechanical test showed that the displacement distance of group A was significantly larger than that of group B (P 0.05) under the vertical load of 700 N, but there was no significant difference between group B and C (P0.05) under the torsional load of 12 N m. The displacement angle of group A was significantly lower than that of group B (P0.05). The displacement angle of group B was greater than that of group C when torsional load 鈮，

本文編號：2410799