I.Nei chinangwa cannulated screw vane buri?
Iyo cannulated screw system inoshanda sei? Kushandisa waya dzakaonda dzeKirschner (K-waya) dzakaboorwa mubhonzo kutungamira screw trajectories nemazvo muzvidimbu zvidiki zvemapfupa.
Kushandiswa kweK-waya kunodzivirira kudhiraivha maburi ekutyaira uye kunobvumira kugadziriswa kwezvimedu zvemapfupa zviri pedyo panguva yekuisa screw. Maturusi maburi uye maburi screws anoiswa mubhonzo pamusoro peK-waya. Cannulated screw fixation inobatsira mumutsipa wekervical kudzikamisa odontoid fractures uye kurapa kusagadzikana kweatlantoaxial.
Cannulated screws ane akawanda mabhenefiti zvichienzaniswa noncannulated screws: 1) ari K-waya anotungamira sikuruwa nzvimbo mubhonzo;
2) iyo K-waya trajectory inoita reposition nyore kana yekutanga trajectory yanga isina kunaka;
3) iyo K-waya inobvumira kuenderera kugadzika kwepedyo zvidimbu zvemapfupa asina kugadzikana;
4) Iyo K-waya inodzivirira kufamba kwezvimedu zvemapfupa zvisina kugadzikana panguva yekuisa screw.
Matambudziko ane chekuita neK-waya (kuputsika, kudzorera, uye kufambira mberi) anogona kudzikiswa uchishandisa chaiwo maitiro ekushanda. Yakakosha cannulated screw tool system yakagadziridzwa yakanangana nepamusoro cervical fixation kuti ibvumire percutaneous drilling uchishandisa marefu tunnel midziyo, masheheti ematishu, madhiraivha, uye refu K-waya. Zvishandiso izvi zvinobvumira kuendeswa kwekanuni screws pakona yakaderera kusvika kumusana kuburikidza neakareba-akapfava-tishu trajectories. Cannulated screws ane zvakakosha zvichienzaniswa nenoncannulated screws yekugadzirisa iyo isina kugadzikana cervical spine pane system.
II.Ndeipi iri nani cannulated screws kana intrameduallary misumari?
Zvose zviri zviviri intramedullary mbambo uye cannulated misumari midziyo yezvokurapa inoshandiswa kugadzirisa mukati mekuputika. Mumwe nomumwe ane zvazvakanakira uye akakodzera mhando dzakasiyana dzekuputsika uye kurapa zvinodiwa.
| Type | Advantage |
| Intramedullary Nail | Iyo intramedullary nail fixation mhedzisiro pane yakatsiga kuputsika kwemapfupa marefu yakanaka, ine kukuvara kushoma uye kushoma kubuda ropa. Intramedullary nail fixation ndeyepakati kugadzirisa. Kuenzaniswa nemahwendefa esimbi, intramedullary misumari inogonawo kuchengetedza kutendeseka kwe extraosseous membrane, kudzivirira kunonoka kuputsika kupora, uye kuita basa rekudzivirira kutapukirwa. |
| Cannulated Screw | Inonyanya kushandiswa munzvimbo dzakadai seye femoral mitsipa fractures, ine yakakosha kugadzirisa uye compression mhedzisiro. Uyezve, kukuvadza kuduku zvikuru uye hapana mahwendefa esimbi anodiwa. |
III.Kushandisa cancellous vs cortical screws?
Cancellous screws uye cortical screws ese ari maviri marudzi e orthopedic implants anoshandiswa mukugadzirisa bhonzo, asi akagadzirirwa marudzi akasiyana emapfupa uye ane akasiyana maapplication:
Cancellous Screws Yakanyatsogadzirirwa kushandiswa mune spongy, shoma dense, uye trabecular bone tissue, inowanzowanikwa pamagumo emapfupa akareba, akadai sefemur uye tibia.Inowanzo shandiswa munzvimbo dzine pfupa yakawanda uye shoma shoma, dzakadai semetaphyseal nzvimbo dzemapfupa akareba. Zvinowanzo shandiswa mumatanho anosanganisira musana, pelvis, uye zvimwe zvikamu zvepfudzi uye hip.
Cortical Screws yakagadzirirwa kushandiswa mune denser, cortical bone, iyo inoumba yekunze layer yemapfupa mazhinji uye yakanyanya kuoma uye yakasimba kupfuura kudzima bhonzo. Kazhinji inoshandiswa mumamiriro ezvinhu apo simba guru uye kugadzikana kunodiwa, zvakadai sekugadzirisa kuputsika mu diaphysis (shaft) yemapfupa akareba. Izvo zvinoshandiswawo mune zvimwe zvemukati zvigadziriso zvemukati uye mahwendefa.
Mukupfupisa, sarudzo pakati pekukanzura uye cortical screws zvinoenderana nerudzi rwepfupa rinogadziriswa uye izvo zvinodiwa zveothopedic maitiro. Cancellous screws akakodzera kune akapfava, ane porous bhonzo, nepo cortical screws yakanakira denser, inotakura-inotakura bhonzo.
Nguva yekutumira: Chivabvu-09-2025
