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๐ŸŽฏ ุดุงูŠููŠู† ุงู„ู€ 3 ุญุฑูƒุงุช ุฏูˆู„ุŸ

ุฏูˆู„ ุฃู‡ู… 3 arthrokinematic movements ุจุชุญุตู„ ุฏุงุฎู„ ุฃูŠ ู…ูุตู„ ุจูŠุฌู…ุน ุจูŠู† ุณุทุญูŠู† (articulating surfaces):

๐Ÿ”น Roll (ุงู„ุชุฏุญุฑุฌ):
ูŠุนู†ูŠ ุฅู† ุณุทุญ ุงู„ุนุธู…ุฉ ุจูŠู„ู ุนู„ู‰ ุงู„ุณุทุญ ุงู„ุชุงู†ูŠ ูƒุฃู†ู‡ ุนุฌู„ ุจูŠู…ุดูŠ ุนู„ู‰ ุงู„ุฃุฑุถ.
โœ”๏ธ Example: Femoral condyles ุจุชุนู…ู„ roll ุนู„ู‰ Tibial plateau ูˆู‚ุช ุซู†ูŠ ุงู„ุฑูƒุจุฉ.
โœ”๏ธ Roll = new point ูŠู‚ุงุจู„ new point

๐Ÿ”น Slide / Glide (ุงู„ุงู†ุฒู„ุงู‚):
ูŠุนู†ูŠ ุงู„ุณุทุญ ุงู„ุนุธู…ูŠ ุจูŠู†ุฒู„ู‚ ุนู„ู‰ ุงู„ุณุทุญ ุงู„ุชุงู†ูŠ ููŠ ุงุชุฌุงู‡ ูˆุงุญุฏุŒ ุฒูŠ ูƒุจุงูŠุฉ ุจุชุชุฒุญู„ู‚ ุนู„ู‰ ุชุฑุงุจูŠุฒุฉ.
โœ”๏ธ Example: Humeral head ุจุชุนู…ู„ glide ุฌูˆู‡ glenoid fossa ุฃุซู†ุงุก abduction.
โœ”๏ธ Slide = ู†ูุณ point ุชู†ุฒู„ู‚ ุนู„ู‰ ุณุทุญ ุชุงู†ูŠ

๐Ÿ”น Spin (ุงู„ุฏูˆุฑุงู† ุงู„ู…ุญูˆุฑูŠ):
ูŠุนู†ูŠ ุงู„ุนุธู…ุฉ ุจุชู„ู ุญูˆุงู„ูŠู† ู…ุญูˆุฑ ุซุงุจุช ู…ู† ุบูŠุฑ ุชุฏุญุฑุฌ ุฃูˆ ุงู†ุฒู„ุงู‚.
โœ”๏ธ Example: ุฏูˆุฑุงู† ุงู„ู€ Radius ุญูˆุงู„ูŠู† ุงู„ู€ Capitulum ููŠ ุงู„ู€ supination & pronation.
โœ”๏ธ Spin = ู†ูุณ point ุชู„ู ุญูˆุงู„ูŠู† ู…ุญูˆุฑ ุซุงุจุช
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๐Ÿ”ธ ุฃู…ุซู„ุฉ ุญูŠุงุชูŠุฉ ุจุณูŠุทุฉ:
- Roll = ุฒูŠ ูƒูˆุฑุฉ ุจุชู…ุดูŠ
- Slide = ูƒุชุงุจ ุจูŠุชุฒุญู„ู‚ ุนู„ู‰ ุชุฑุงุจูŠุฒุฉ
- Spin = ุบุทุง ุฅุฒุงุฒุฉ ุจูŠู„ู ููŠ ู…ูƒุงู†ู‡
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๐ŸŒ€ Convex-Concave Rule:
ู‚ุงุนุฏุฉ ู…ู‡ู…ุฉ ุจุชุญุฏุฏ ุงุชุฌุงู‡ ุงู„ุงู†ุฒู„ุงู‚ ุฏุงุฎู„ ุงู„ู…ูุตู„:

โ—พ ู„ูˆ ุงู„ุณุทุญ ุงู„ู…ุชุญุฑูƒ Convex ูˆุงู„ุณุทุญ ุงู„ุชุงู†ูŠ ุซุงุจุช Concave:
โ†’ ุงู„ู€ Slide ุจูŠูƒูˆู† ุนูƒุณ ุงุชุฌุงู‡ ุงู„ุญุฑูƒุฉ.

โ—พ ู„ูˆ ุงู„ุณุทุญ ุงู„ู…ุชุญุฑูƒ Concave ูˆุงู„ุณุทุญ ุงู„ุชุงู†ูŠ ุซุงุจุช Convex:
โ†’ ุงู„ู€ Slide ุจูŠูƒูˆู† ููŠ ู†ูุณ ุงุชุฌุงู‡ ุงู„ุญุฑูƒุฉ.
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๐Ÿ“Œ ุฃู…ุซู„ุฉ ุชูˆุถูŠุญูŠุฉ:
- Shoulder Abduction (Convex humerus on concave glenoid):
โ†’ ุงู„ุฐุฑุงุน ุจูŠุทู„ุน ู„ููˆู‚ุŒ ู„ูƒู† ุงู„ู€ slide ุจูŠูƒูˆู† ู„ุชุญุช.
- Knee Extension (Concave tibia on convex femur):
โ†’ ู„ู…ุง ุชูุฑุฏ ุงู„ุฑูƒุจุฉุŒ ุงู„ู€ slide ุจูŠูƒูˆู† ู„ู‚ุฏู‘ุงู… ุฒูŠ ุงู„ุญุฑูƒุฉ.
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๐Ÿ”น ู…ุตุทู„ุญุงุช ู‡ุชููŠุฏูƒู… ู‚ุฏุงู…:
- Joint play = ุงู„ุญุฑูƒุงุช ุงู„ุตุบูŠุฑุฉ ุฏูŠ ุฏุงุฎู„ ุงู„ู…ูุตู„.
- Mobilization = ุชุฏุฎู„ ูŠุฏูˆูŠ ู„ุชุญุณูŠู† ุงู„ุญุฑูƒุฉ ู„ู…ุง ุชุจู‚ู‰ ู…ุญุฏูˆุฏุฉ ุฃูˆ ู…ุคู„ู…ุฉ.
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ู„ูˆ ูู‡ู…ุชูˆุง ุฏูˆู„ ุตุญุŒ ู‡ุชูู‡ู…ูˆุง ูƒุชูŠุฑ ู…ู† ู…ุดุงูƒู„ ุงู„ุญุฑูƒุฉ ุจุนุฏ ูƒุฏู‡! ๐Ÿ’ชโœจ

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โค10
โ–ช๏ธŽู…ูˆุงู‚ุน ู„ู„ุฃุดุนุฉ ู…ููŠุฏุฉ ุฌุฏู‹ุง:

- Radiopaediaโ†’
https://radiopaedia.org/
- Radiology Assistantโ†’
https://www.radiologyassistant.nl/en

โ–ช๏ธŽุชุดุงู†ู„ ุฃุดุนุฉ MRI ู„ูƒู„ ุงู„ุฃู…ุฑุงุถ:

https://www.youtube.com/@dr.gayfirstlookmri/videos

#Radiology
๐Ÿฅฐ3