PFNA yemukati yekugadzirisa nzira
PFNA (Proximal Femoral Nail Antirotation), the proximal femoral anti-rotation intramedullary nail.Inokodzera mhando dzakasiyana dzechikadzi intertrochanteric fractures;subtrochanteric fractures;femoral neck base fractures;femoral neck fractures yakasanganiswa nefemoral shaft fractures;femoral intertrochanteric fractures yakasanganiswa nefemoral shaft fractures.
Main mbambo dhizaini maficha uye zvakanakira
(1) Iyo huru mbambo dhizaini yakaratidzwa neanopfuura mazana maviri emakumi maviri emakesi ePFNA, uye yakawana yakanakisa match neanatomy ye medullary canal;
(2) 6-dhigirii yekubvisa kona yembambo huru kuti inyore nyore kubva kumusoro kweiyo trochanter yakakura;
(3) Hollow chipikiri, nyore kuisa;
(4) Iyo distal yekupedzisira yembambo huru ine imwe elasticity, iyo iri nyore kuisa iyo huru mbambo uye inodzivirira kushushikana kwepfungwa.
Spiral blade:
(1) Imwe yekugadziriswa kwemukati panguva imwe chete inopedzisa anti-kutenderera uye angular kugadzikana;
(2) Iyo blade ine nzvimbo yakakura yepamusoro uye zvishoma nezvishoma kuwedzera kwepakati dhayamita.Nokutyaira mukati uye kudzvinyirira pfupa rinoregeredza, simba rekusimudzira rehelical blade rinogona kuvandudzwa, iro rinonyanya kukodzera varwere vane mafractures akasununguka;
(3) Helical blade yakanyatsobatanidzwa nefupa, iyo inowedzera kugadzikana uye inodzivisa kutenderera.Mugumo wekuputsika une simba rakasimba rekudonha uye varus deformity mushure mekutora.
Aya anotevera pfungwa dzinofanirwa kutariswa pakurapa kwechikadzi kuputsika nePFNA kugadziriswa kwemukati:
(1) Varwere vakawanda vakwegura vanotambura nezvirwere zvinokosha zvokurapa uye havashiviriri zvakanaka pakuvhiyiwa.Vasati vavhiyiwa, mamiriro ezvinhu emurwere anofanira kunyatsoongororwa.Kana murwere achikwanisa kushivirira kuvhiyiwa, kuvhiyiwa kunofanira kuitwa nokukurumidza sezvinobvira, uye nhengo inenge yabatwa inofanira kuitwa nokukurumidza pashure pokuvhiyiwa.Kudzivirira kana kuderedza kuitika kwezvinetso zvakasiyana-siyana;
(2) Kufara kwemedullary cavity kunofanirwa kuyerwa pachine nguva isati yaitwa.Iyo dhayamita yeiyo main intramedullary nail ndeye 1-2 mm madiki pane chaiyo medullary cavity, uye haina kukodzera kuiswa kwechisimba kudzivirira kuitika kwematambudziko akadai distal femur fracture;
(3) Murwere ari supine, nhengo inobatwa yakatwasuka, uye kutenderera kwemukati ndeye 15 °, iyo yakanakira kuiswa kweinotungamira tsono uye mbambo huru.Kubata kwakakwana uye kuvharwa kuderedzwa kwekuputsika pasi pe fluoroscopy ndiyo makiyi ekuvhiya kunobudirira;
(4) Kusashanda zvakanaka kwepanopindwa netsono huru ye screw inogona kukonzera kuti PFNA main screw ivharwe mu medullary cavity kana chinzvimbo chespiral blade chiri eccentric, izvo zvinogona kukonzera kutsauka kwekuputsika kana kuchekwa kwekushushikana. yemutsipa wechikadzi uye musoro wechikadzi ne spiral blade mushure mekuvhiyiwa, kuderedza mhedzisiro yekuvhiya;
(5) Iyo C-arm X-ray muchina unofanirwa kugara uchitarisa kudzika uye eccentricity ye screw blade guide tsono kana uchipinza mukati, uye kudzika kweiyo screw blade musoro kunofanirwa kunge kuri 5-10 mm pazasi pe cartilage pamusoro pe. musoro wechikadzi;
(6) Nekubatanidzwa kwe subtrochanteric fractures kana yakareba oblique fracture fragments, zvinokurudzirwa kushandisa PFNA yakawedzerwa, uye kudiwa kwekudzikisa pachena kunoenderana nekuderedzwa kwekuputsika uye kugadzikana mushure mekuderedza.Kana zvichidikanwa, tambo yesimbi inogona kushandiswa kusunga chivharo chekuputsika, asi ichakanganisa kuporesa kuputsika uye inofanira kudziviswa;
(7) Pakutsemuka kwakatsemuka kumusoro kwetrochanter yakakura, kushanda kunofanirwa kuve kwakapfava sezvinobvira kudzivirira kumwe kuparadzaniswa kwezvimedu zvekuputsika.
Zvakanakira uye Zvinogumira zvePFNA
Serudzi rutsva rweintramedullary fixation device, PFNA inogona kutamisa mutoro kuburikidza neextrusion, kuitira kuti mukati nekunze mativi echikadzi anogona kutakura kushushikana kwakafanana, nekudaro kuzadzisa chinangwa chekuvandudza kugadzikana uye kubudirira kwekugadziriswa kwemukati kwekuputsika.Iyo yakagadziriswa mhedzisiro yakanaka uye zvichingodaro.
Iko kushandiswa kwePFNA zvakare kune zvimwe zvinogumira, senge kuomerwa nekuisa iyo distal yekuvhara screw, yakawedzera njodzi yekutyoka yakatenderedza yekukiya screw, coxa varus deformity, uye kurwadziwa munzvimbo yepamberi yehudyu inokonzerwa nekutsamwiswa kweiyootibial bhendi.Osteoporosis, zvakadarointramedullary kugadzirisakazhinji ine mukana wekugadzirisa kukundikana uye fracture nonunion.
Naizvozvo, kune vakwegura varwere vane kusagadzikana intertrochanteric fractures vane osteoporosis yakaoma, kutakura uremu hwepakutanga hakubvumirwi zvachose mushure mekutora PFNA.
Nguva yekutumira: Sep-30-2022
