Apo chirwere chekuberekwa chinopfuura, muviri we fetus unongotama chete, asi unozvishandurawo pachawo pakuberekwa kwechirwere. Kupfuura rwonzi rwepachivi uye zvinyoro zvinyoro - zvinonamatira kana zvikamu zvisingaverengeki zvemuviri. Izvo zvose zvakaoma zvekushandura, kushanduka kwemhepo uye kuwedzera kwekufamba, iyo iyo fetus inobata munyaya iyi, inonzi biomechanism yekuzvarwa.
Nzvimbo yakadzika pasi, inotanga kuberekwa, inonzi inonzi wire point, uye nzvimbo iyo michero inosara yekufambisa pasi pe pubic symphysis-iyo nzvimbo yekugadzirisa. Izvo zvinyorwa zvekuberekwa kunoenderana nehurukuro (chikamu chei fetus chiri pamusoro pechipinda chemukoko muduku), kuisa (chikamu chemucheche yakatopinda uye yakagadzirirwa mumapepa maduku), ukuru uye humiro hwemafupa maviri uye musoro wemucheche.
Biomechanism yekuberekwa ne musoro mharidzo
Iyo mharidzo inowanikwa mumusoro (iyo musoro iri pamusoro pemusuo wepelvis) uye gluteal (pamusoro pemusuo - maziso emucheche), oblique, mutsara kana mutsara mharidzo - ichi hachisi chosiyana chechimiro uye zvinoda kupindira kwegynecologist uye mazano chaiwo ekushanda. Muhurukuro ye occipital, nheyo yehuta ichava occiput. Pamberi pekuona iyo iyo iyo inoshandiswa kumashure inoshandiswa kuruvanze rwomukati, uye shure kwayo inotarisana nemusvingo kumashure.
Biomechanism yebasa ne occipital mharidzo
1. Pamberi pekuona:
- kupfugama kwemusoro (aine fontanel akazova wire thread);
- iyo yemukati yemusoro mumapapiro amai, apo nape ye fetus inotungamira ku symphysis, uye nehuma kumusikana waamai;
- kuwedzerwa kwemusoro kana uchipfuura pasi peparaparc arc, apo chibereko chinopesana nechikamu che succaipital uye musoro usingabvumirwi pasi pechinhu ichi chekugadzirisa, kupfuura mudiki hukuru oblique (9.5 cm);
- kubuda kwekunze kwemukoko uye kutenderera kwemukati kwemafudzi, apo mafudzi ehukuru hwavo hukuru mukupfuura kana kuti oblique, mushure mokupfuura mapepa, zvikamu zvose zvezvibereko zvinokurumidza kuberekwa.
2. Mumaonero ekupedzisira:
- kupfugama musoro (iyo wire point istananel duku kana nzvimbo iri pakati pediki nehombe);
- iyo inopinda mukati memusoro - nape inotendeukira ku sacrum, uye pfupa kusvika kuruboshwe rworuboshwe, kubhururuka kwepamusoro kwemusoro - panguva yekuputika kwemusoro, chikamu chepamberi chacho chinosvika pamucheto wezasi we symphysis - ichi ndicho chigadziro chekutanga chinotenderera musoro, uye wechipiri ndiyo suboccipital fossa, iyo iyo michero inopesana neecccyx, kuwedzerwa kunoitika nekuzvarwa kwemusoro;
- kutsauka kwekunze kwemukoko nechomukati mutsara wei-hangers.
Mamwe mharidzo yepamusoro, kuberekwa kunogona kuitika nebudisi (anterior uye chiso chekuratidzira), asi mukutarisana kwepamberi kunogona kusakanganisika zvikuru uye kufa kwevana vacheche kwakakura zvikuru-nekuwedzera kwekuwedzera, kuberekwa kwe fetus yemukomana mhenyu hakugoneki.
Biomechanism yebasa nemaperemvic (breech) mharidzo
Zvimwe zvakasiyana-siyana zvinowanzoitwa mharidzo yebreech ye fetus, apo mwana achaberekwa necheperivic pakuguma mberi. Kubereka mumharidzo iyi haisi chirwere, asi zvakaoma.
Biomechanism nepevicvic presentation:
- kuiswa kwechikamu chinokwidza che fetus mudiki kechifu oblique muhukuru, fini inopinda inova imwe yemakumbo emucheche;
- mukati maro matanho akaenzana zvakananga, mushure mekunge imwe yezvigaro inotarisana ne symphysis, imwe - kune coccyx;
- kumira kwechigadziko chedu, iyo iyo yekugadziriswa kwechitsime - pasi pechitsiko chine mbiru, chakakomberedza iyo inopfugama uye chikamu chepando chinoberekwa;
- mukati memafudzi nekunze kwechitubu, umo mafudzi emucheche anowanikwa muukuru hwakananga;
- kurutivi rwechipiri rwechiganda chemukati, iyo mafudzi epamberi akaiswa pasi pechipfuva uye shure kwepfudzi rinotakurwa kana rakasununguka;
- iyo inopinda mukati memusoro, iyo inoshandura occiput mberi, suboccipitary fossa inogadziriswa pasi peshoko rega roga uye rakagadziriswa, richizvarwa munzvimbo yakamira.
Mharidzo yegumbo yakangofanana neyokutaura kwepachevic, asi panguva imwechete iyo vanoedza kudzivisa kuwira kunze kwemakumbo uye kuedza kunonoka kuberekwa kwavo, vachiedza kushandura mharidzo yegumbo mu gluteal.