Ama-46% okuphuka kweqakala okujikelezayo kuhambisana nokuphuka kwe-posterior malleolar. Indlela ye-posterolateral yokubona ngqo kanye nokulungisa i-posterior malleolus iyindlela yokuhlinzwa esetshenziswa kakhulu, enikeza izinzuzo ezingcono ze-biomechanical uma kuqhathaniswa nokunciphisa okuvaliwe kanye nokulungisa izikulufo ze-anteroposterior. Kodwa-ke, ngezingcezu ezinkulu zokuphuka kwe-posterior malleolar noma ukuphuka kwe-posterior malleolar okubandakanya i-posterior colliculus ye-medial malleolus, indlela ye-posteromedial inikeza umbono ongcono wokuhlinzwa.
Ukuze kuqhathaniswe ububanzi bokuchayeka kwe-posterior malleolus, ukucindezeleka kwe-neurovascular bundle, kanye nebanga eliphakathi kokusikwa kanye ne-neurovascular bundle kuzo zonke izindlela ezintathu ezahlukene ze-posteromedial, abacwaningi benze ucwaningo lwesidumbu. Imiphumela isanda kushicilelwa kumagazini we-FAS. Okutholakele kufingqiwe kanje:
Njengamanje, kunezindlela ezintathu eziyinhloko ze-posteromedial zokuveza i-posterior malleolus:
1. Indlela Yokubhekana Nezimo Eziphakathi (i-mePM): Le ndlela ingena phakathi komphetho ongemuva we-medial malleolus kanye ne-tibialis posterior tendon (Isithombe 1 sibonisa i-tibialis posterior tendon).
2. Indlela Eguquliwe Ye-Posteromedial (moPM): Le ndlela ingena phakathi kwe-tibialis posterior tendon kanye ne-flexor digitorum longus tendon (Isithombe 1 sibonisa i-tibialis posterior tendon, kanti Isithombe 2 sibonisa i-flexor digitorum longus tendon).
3. Indlela Yokubhekana Nezinkinga Zokubhekana Nezinkinga (PM): Le ndlela ingena phakathi komphetho ophakathi we-Achilles tendon kanye ne-flexor hallucis longus tendon (Isithombe 3 sibonisa i-Achilles tendon, kanti Isithombe 4 sibonisa i-flexor hallucis longus tendon).
Ngokuphathelene nokucindezeleka kwe-neurovascular bundle, indlela ye-PM inokucindezeleka okuphansi ku-6.18N uma kuqhathaniswa nezindlela ze-mePM kanye ne-moPM, okubonisa amathuba aphansi okulimala kwe-traction ye-neurovascular bundle ngesikhathi sokuhlinzwa.
Ngokuphathelene nobubanzi bokuchayeka kwe-posterior malleolus, indlela ye-PM iphinde inikeze ukuchayeka okukhulu, okuvumela ukubonakala okungu-71% kwe-posterior malleolus. Uma kuqhathaniswa, izindlela ze-mePM kanye ne-moPM zivumela ukuchayeka okungu-48.5% kanye no-57% kwe-posterior malleolus, ngokulandelana.
● Umdwebo ubonisa ububanzi bokuchayeka kwe-posterior malleolus kulezi zindlela ezintathu. I-AB imelela ububanzi obuphelele be-posterior malleolus, i-CD imelela ububanzi obuchayeka, kanti i-CD/AB iyisilinganiso sokuchayeka. Kusukela phezulu kuya phansi, kuboniswa ububanzi bokuchayeka be-mePM, i-moPM, kanye ne-PM. Kusobala ukuthi indlela ye-PM inobubanzi obukhulu bokuchayeka.
Ngokuphathelene nebanga eliphakathi kokusikwa kanye ne-neurovascular bundle, indlela ye-PM nayo inebanga elikhulu kakhulu, elilinganiselwa ku-25.5mm. Lokhu kukhulu kune-mePM engu-17.25mm kanye ne-moPM engu-7.5mm. Lokhu kubonisa ukuthi indlela ye-PM inamathuba amancane kakhulu okulimala kwe-neurovascular bundle ngesikhathi sokuhlinzwa.
● Umdwebo ukhombisa amabanga phakathi kokusikwa kanye nenqwaba yemithambo yegazi kulezi zindlela ezintathu. Kusukela kwesobunxele kuya kwesokudla, amabanga ezindlela ze-mePM, moPM, kanye ne-PM abonisiwe. Kusobala ukuthi indlela ye-PM inebanga elikhulu kakhulu ukusuka kunqwaba yemithambo yegazi.
Isikhathi sokuthunyelwe: Meyi-31-2024
