Tib neeg pisiform ossification pib nruab nrab ntawm 9 txog 12 xyoo [5]. Qhov no tshwm sim tom qab hauv kev loj hlob dua li thawj qhov chaw ossification chaw ossification chaw Ib qho chaw ossification yog a taw tes qhov twg ossification ntawm pob txha mos pib Thawj kauj ruam hauv ossification yog tias cov pob txha mos ntawm lub sijhawm no nthuav dav. thiab npaj lawv tus kheej hauv kab. Lub matrix nyob rau hauv uas lawv imbedded nce nyob rau hauv kom muaj nuj nqis, thiaj li hais tias lub hlwb ua ntxiv sib cais los ntawm ib leeg. https://en.wikipedia.org › wiki › Ossification_center
Ossification center - Wikipedia
ntawm chimpanzees lossis gorillas; Txawm li cas los xij, qhov sib piv ossification sij hawm thoob plaws hom thiab kev sib raug zoo ntawm cov chaw thawj thiab theem nrab tseem tsis paub [4].
Pisiform muaj hnub nyoog li cas?
pisiform: 8-12 xyoo.
Lub hnub nyoog twg cov pob txha carpal ossify?
Qhov kev tshawb pom tseem ceeb hauv txoj kev tshawb no yog cov pob txha carpal pib ossify hauv thawj xyoo ntawm lub neej, pib kwv yees li ntawm lub hnub nyoog 6 hli. Qhov ossification ntawm cov pob txha carpal pib nrog lub capitate thiab hamate.
Lub chaw scaphoid ossification tshwm sim thaum muaj hnub nyoog li cas?
Lub ossific nucleus ntawm scaphoid tshwm sim ntawm kwv yees li 5 xyoos thiab 10 hli hnub nyoog ntawm cov tub thiab 4 xyoo thiab 6 hli ntawm cov ntxhais [15, 16]. Ntau qhov chaw ossification tej zaum yuav tshwm sim, tab sis kev sib koom ua ke yog nrawm [17].
Pisiform tsim li cas?
Nyob rau hauv cov se uas tsis yog tib neeg, cov pisiform tsim los ntawm ob lub chaw ossification uas tau muab faib los ntawm lub phaj palmar epiphysealVim tias nyob rau hauv lwm yam tsiaj txhu, cov pob txha tsis ua raws li cov sesamoid. txoj kev loj hlob qauv thiab tuaj yeem pom articulating nrog ntau tshaj ib pob txha, lub pisiform tsis yog pob txha sesamoid tiag.
