1. Zvichienderana nekuti posterior cruciate ligament yakachengetedzwa here
Zvichienderana nekuti posterior cruciate ligament yakachengetedzwa here, prosthesis yekutanga yekutsiva ibvi rekugadzira inogona kukamurwa kuita posterior cruciate ligament replacement (Posterior Stabilized, PS) uye posterior cruciate ligament retention (Cruiate Retention, CR). Mumakore achangopfuura, tibial plateau yemhando mbiri idzi dzeprostheses yakagadzirwa nemadhigirii akasiyana ekuenderana uye upamhi hwepakati zvichienderana nekugadzikana kwejoini, mashandiro ejoini uye pfungwa yachiremba, kuitira kuti pave nekugadzikana kwejoini uye kunatsiridza mashandiro ekinematic.
(1) Zvinhu zviri muCR nePS prostheses:
CR prosthesis inochengetedza posterior cruciate ligament yemajoini ebviuye inoderedza huwandu hwematanho ekuvhiyiwa; inodzivisa kubviswazve kwefemoral condyle uye inochengetedza mapfupa; mudzidziso, inogona kuwedzera kugadzikana kwekutenderera, kuderedza paradoxical anterior displacement, uye kuita backward rolling. Inobatsira kuchengetedza proprioception.
Chigadzirwa chePS chinoshandisa chimiro checam-column kutsiva basa remuchinjikwa wekumashure mukugadzirwa, kuitira kuti chipfeko chefemoral chigone kudzoserwa kumashure panguva yekushanda kwechiuno. Panguva yekuvhiyiwa,femoral intercondylarosteotomy inodiwa. Nekuda kwekubviswa kwe posterior cruciate ligament, gap rekutenderera rakakura, kufamba kwemashure kuri nyore, uye kuenzana kwema ligament kuri nyore uye kuri nyore.
(2) Zviratidzo zveCR nePS prostheses zvine hukama:
Varwere vazhinji vari kuvhiyiwa mabvi ese vanogona kushandisa CR prosthesis kana PS prosthesis, uye sarudzo yeprosthesis inoenderana nemamiriro emurwere uye ruzivo rwachiremba. Zvisinei, CR prosthesis yakakodzera varwere vane posterior cruciate ligament function yakajairika, joint hyperplasia iri nyore, uye joint deformity isina kusimba zvakanyanya. PS prostheses inogona kushandiswa zvakanyanya mu primary total ibvi rekuchinja, kusanganisira varwere vane hyperplasia yakanyanya uye deformity. Muvarwere vane osteoporosis yakanyanya kana mapfupa asina kunaka, intramedullary lengthening rods dzinogona kudiwa, uye collateral ligament dysfunction inogona kudiwa. Shandisa restrictive spacers.
2. Chikuva chakagadziriswa uye chikuva chinofambiswa
Iyo yekugadzirachigadziko chekubatanidza mabviinogona kukamurwa kuita puratifomu yakagadzika uye puratifomu inofambiswa zvichienderana nenzira yekubatanidza ye polyethylene gasket uye tireyi yesimbi tibial. Fixed platform prosthesis chikamu che polyethylene chakasungirirwa ku tibial plateau nechinhu chinokiya. Chikamu che polyethylene che movable platform prosthesis chinogona kufamba pa tibial plateau. Kuwedzera pakugadzira chinofambiswa ne femoral prosthesis, polyethylene spacer inobvumirawo kufamba kwakati pakati pe tibial plateau ne tibial plateau.
Gasket yeprosthesis yakagadziriswa yakavharirwa pabracket yesimbi, iyo yakasimba uye yakavimbika, uye inoshandiswa zvakanyanya. Maitiro ekugadzira maspacers anogona kusiyana zvakanyanya kubva kumugadziri kuenda kumugadziri kuti aenderane neprosthesis yavo yakasiyana yefemoral uye kuvandudza kinematics inodiwa. Inogona zvakare kuchinjwa nyore nyore kuita shim inodzivisa kana zvichidikanwa.
Nguva yekutumira: Gunyana-10-2022
