Ka taƙaita labarin:  Dalilin da ya sa yatsun hannu ke tsagewa ya daɗe yana jawo gardama tsakanin masu bincike. Amma wasu rukunin masana kimiyya daga Jami'ar Alberta a Kanada sun ce sun warware wannan batun. Binciken da suka yi ya gano cewa, fashewar tana faruwa ne saboda saurin samuwar wani rami mai cike da iskar gas a cikin wani abu mai santsi da ake kira sinovial fluid wanda ke shafa sararin da ke tsakanin kasusuwan yatsun hannu. Bincike ya gano cewa fashewar ta haifar da saurin samar da wani rami mai cike da iskar gas a cikin wani abu mai santsi da ake kira sinovial fluid wanda ke lubricating sararin samaniya tsakanin kasusuwan yatsa. Binciken ya kuma gano cewa yatsun hannu ya fashe a cikin ƙasa da milliseconds 310 kuma cewa nan da nan kafin sautin fashewa akwai farin haske, wanda aka yi imanin cewa daga ruwan da yake gudu tare. Gwajin ya yiwu ne ta hanyar daukar hoto na Magnetic resonance (MRI) <unk> wanda ke samar da cikakkun hotunan tsarin jikin mutum na ciki <unk> kuma waɗanda suka shiga ciki sun yi dariya da shi a matsayin <unk> ja yatsana binciken. <unk> Farfesa a fannin aikin injiniya Richard Thompson ya ce: <unk>Hotunan da aka yi da sauri tare da MRI sun dace da waɗannan karatun saboda ya ba da damar bayyananniyar gani game da kasusuwa da ruwan da ke kewaye da su, kuma mahimmanci, samuwar ramin iska.<unk> Ɗaya daga cikin masu binciken, masanin gyaran kafa Jerome Fryer, an yi amfani da shi a matsayin ɗan guinea don gwajin kuma ya ba da nasa ƙuƙwalwar hannu ga dalilin. Gwajin ya yiwu ne ta hanyar daukar hoto na magnetic resonance (MRI) da kuma yatsan mai binciken. An saka yatsunsu daban-daban a cikin bututun da aka haɗa da kebul wanda aka ja har sai haɗin gwiwa ya fashe kuma an kama sakamakon akan bidiyon MRI. Tambaya ta gaba mai zafi ita ce: Shin karya yatsun hannu yana da lahani? A yanzu ba a amsa ba. Amma Greg Kawchuk, farfesa a fannin jinya, wanda ya ja-goranci binciken da aka wallafa a mujallar kimiyya PLOS ONE, ya lura cewa wasu bincike sun nuna cewa ba ta da lahani. Ya ce: <unk>Me ya sa daidai joints crack a wasu mutane kuma ba wasu?<unk> Ƙunƙunƙun ƙuƙwalwa a cikin ƙasa da 310 milliseconds da ruwa yana gudana tare...
Binciken Jami'ar Alberta ya gano dalilin da ya sa yatsun hannu ke karyewa. Bincike ya gano cewa fashewar ta haifar da saurin samar da rami mai cike da iskar gas. Bincike ya kuma gano fashewar gwiwar hannu a kasa da milliseconds 310. An yi amfani da marubucin binciken a matsayin guinea alade don gwaji. An yi amfani da saurin ɗaukar hoto na magnetic resonance (MRI) don ɗaukar 'kasusuwa da ruwa da ke kewaye da su, kuma mafi mahimmanci, samuwar ramin iska' Masu binciken sun yi dariya suna kiran aikin su 'binciken yatsana'