Ikibazo cyo guhitamo umubyimba wimisumari yimbere kumagufa maremare yigituba yingingo zo hepfo.

Imisumari yimbere ni igipimo cya zahabu cyo kubaga kuvura diaphyseal ivunika ryamagufa maremare yigitereko mumaguru yo hepfo. Itanga ibyiza nka ihahamuka rito ryo kubaga n'imbaraga za biomehanike, bigatuma ikoreshwa cyane mubice bya tibial, femorale, na humeral shaft. Mubuvuzi, gutoranya imisumari ya diametre ikunze gushyigikira umusumari muremure ushobora kwinjizwamo reaming itagabanije, kugirango habeho umutekano muke. Nubwo, umubyimba wumusumari winjizwamo bigira ingaruka ku buryo butaziguye kuvunika bikomeza kuba umwanzuro.

Mu kiganiro cyabanjirije iki, twaganiriye ku bushakashatsi busuzuma ingaruka za diametre yimisumari yatewe no gukiza amagufwa ku barwayi barengeje imyaka 50 bafite imvune hagati y’imitsi. Ibisubizo byagaragaje ko nta tandukanyirizo ryibarurishamibare riri mu bipimo byo gukiza kuvunika no kongera gufungura hagati yitsinda rya 10mm nitsinda rifite imisumari ifite uburebure burenze 10mm.

Urupapuro rwasohowe mu 2022 n’intiti zo mu Ntara ya Tayiwani na rwo rwageze ku mwanzuro nk'uwo:

Ubushakashatsi bwakorewe ku barwayi 257, bakaba barashyizwemo imisumari ya diametero 10mm, 11mm, 12mm, na 13mm, yagabanyije abarwayi mu matsinda ane ashingiye kuri diameter. Byagaragaye ko nta tandukanyirizo ryibarurishamibare riri mu bipimo byo gukiza kuvunika mu matsinda ane.

Noneho, ibi nabyo biraboneka kubice byoroshye bya tibial shaft?

Mu bushakashatsi buteganijwe bwo kugenzura ibibazo bireba abarwayi 60, abashakashatsi bagabanije abarwayi 60 kimwe mu matsinda abiri ya 30 buri umwe. Itsinda A ryashyizwemo imisumari yoroheje (9mm kubagore na 10mm kubagabo), mugihe itsinda B ryashyizwemo imisumari yuzuye (11mm kubagore na 12mm kubagabo):

Ibisubizo byerekanaga ko nta tandukaniro rikomeye ryagaragaye mu mavuriro cyangwa mu mashusho hagati y’imisumari yoroheje kandi yimbitse. Byongeye kandi, imisumari yoroheje yoroheje yajyanye nigihe gito cyo kubaga na fluoroscopi. Hatitawe ku kuba umusumari wa diametre wijimye cyangwa unanutse wakoreshejwe, reaming iringaniye yakozwe mbere yo gushyiramo imisumari. Abanditsi bavuga ko kumeneka yoroheje ya tibial shaft, imisumari ya diameter yoroheje yimisumari irashobora gukoreshwa mugukosora.