46% yekutyoka kwetsoka kunotenderera kunoperekedzwa nekutyoka kweposterior malleolar. Nzira yekumashure yekuona zvakananga uye kugadzirisa posterior malleolus inzira yekuvhiya inowanzo shandiswa, ichipa mabhenefiti ari nani e biomechanical zvichienzaniswa nekuderedzwa kwakavharwa uye kugadzirisa anteroposterior screw. Zvisinei, kune zvidimbu zvakakura zvekutyoka kweposterior malleolar kana kutyoka kweposterior malleolar kunosanganisira posterior colliculus ye medial malleolus, nzira yekumashure inopa maonero ari nani ekuvhiya.
Kuti vaenzanise huwandu hwema "posterior malleolus", kushushikana kwe "neurovascular bundle", uye daro riri pakati pe "incision" ne "neurovascular bundle" kuburikidza nenzira nhatu dzakasiyana dze "posteromedial", vaongorori vakaita ongororo yechitunha. Mhedzisiro yacho yakaburitswa munguva pfupi yapfuura muFAS journal. Zvakawanikwa zvakapfupikiswa seizvi:
Parizvino, kune nzira nhatu huru dze posteromedial dzekufumura posterior malleolus:
1. Nzira yeMedial Posteromedial (mePM): Nzira iyi inopinda pakati pemucheto wekumashure wemedial malleolus netibialis posterior tendon (Mufananidzo 1 unoratidza tibialis posterior tendon).
2. Nzira Yakagadziriswa yePosteromedial (moPM): Nzira iyi inopinda pakati petibialis posterior tendon neflexor digitorum longus tendon (Mufananidzo 1 unoratidza tibialis posterior tendon, uye Mufananidzo 2 unoratidza flexor digitorum longus tendon).
3. Nzira yePosteromedial (PM): Nzira iyi inopinda pakati pemucheto wepakati weAchilles tendon neflexor hallucis longus tendon (Mufananidzo 3 unoratidza Achilles tendon, uye Mufananidzo 4 unoratidza flexor hallucis longus tendon).
Nezvekumanikidzwa kwetsinga dzeropa, nzira yePM ine kumanikidzwa kwakaderera pa6.18N zvichienzaniswa nenzira dzemePM nemoPM, zvichiratidza mukana mudiki wekukuvara kwekudhonzwa kwetsinga dzeropa panguva yekuvhiyiwa.
Panyaya yehuwandu hwema "posterior malleolus", nzira yePM inopawo mukana wakakura wekuona ma "posterior malleolus" zvichibvumira 71% yekuona ma "posterior malleolus". Kana tichienzanisa, nzira dze mePM ne moPM dzinobvumira 48.5% uye 57% yekuona ma "posterior malleolus", zvichiteerana.
● Dhayagiramu inoratidza huwandu hwekuratidzwa kweposterior malleolus munzira nhatu idzi. AB inomiririra huwandu hwese hweposterior malleolus, CD inomiririra huwandu hwekuratidzwa, uye CD/AB ndiyo chiyero chekuratidzwa. Kubva kumusoro kusvika pasi, huwandu hwekuratidzwa kwemePM, moPM, uye PM hunoratidzwa. Zviri pachena kuti nzira yePM ine huwandu hwakakura hwekuratidzwa.
Kana tichitarisa daro riri pakati pechinhu chakachekwa nechikamu chetsinga dzeropa, nzira yePM inewo daro rakakura, rinosvika 25.5mm. Iri rakakura kupfuura 17.25mm yemePM uye 7.5mm yemoPM. Izvi zvinoratidza kuti nzira yePM ine mukana mudiki wekukuvara kwechikamu chetsinga dzeropa panguva yekuvhiyiwa.
● Dhayagiramu inoratidza daro riri pakati pekucheka nechikamu chetsinga dzeropa chenzira nhatu idzi. Kubva kuruboshwe kuenda kurudyi, daro renzira dzemePM, moPM, uye PM rinoratidzwa. Zviri pachena kuti nzira yePM ine daro rakakura kubva pachikamu chetsinga dzeropa.
Nguva yekutumira: Chivabvu-31-2024
