Page 144 - Lượng giá chức năng hệ vân động

Nhiing cii dong thay the: Cd cang mac rong co the thay the hay ho trd khi cd tii
dau dui bi yeu hay liet. Trong trUdng hdp nay, xoay trong hong se di kem vdi duoi goi.

III. CO CHAN - BAN CHAN

1. GAP LONG CO CHAN (HiNH 7.9)

Ccf di/dc thif Than kinh chi phoi
Cd bap chan Day TK chay, S1, 2

Cd dep Day TK chay, L5.S1.2

Cd gan chan Day TK chay, L4, 5, S1

1.1. Thii bac Binh thiidng (N) den bac Kha (F)

- Tii the: DT nim sap vdi hong va goi duoi, ban chan thong ngoai canh ban.
NK diing d cuoi ban, hiidng mat ve ban chan cua DT.
- On dinh khoi lUdng cua chan thiidng la du de on dinh.

- So nan cd bap chan d phia sau cua bap chan; hoac la cd dep, nam hdi phia
ngoai va sau ben diidi dau ngoai cua cd bap chan. Gan cua cd bap chan co the sd d
tren xiidng got.

- Quan sat DT keo got len tren de lam gap long co chan. Quan sat xem co cii
dong gap cua cac ngon va cua mui ban chan khong, vi do la dau hieu cua cii dong
thay the (hinh 7.9a).
- De khang d phia sau cua got de day no xuong va d mui ban chan de day no
ra triidc. Neu co mot sii yeu cd ro ret, ap liic de len xUdng got la da du (hinh 7.9b).

a) b) c)
Hinh 7.9. Gap long co chan
a) Sd nan va quan sat; b) De khang ; c) Vi the khong trong liic.

1.2. Thii bac Yeu (P), Rat Yeu (T) vd Zero (0)

- Tw the: DT nam nghieng phia ben diidc thii. Hong va goi ciia chan diidi
duoi va co chan trung tinh. Chan tren co the gap goi de khong can trd cii dong. NK
dung d cuoi ban.

143