- TrUdng hdp liet ngoai vi hoan toan (liet do theo Ho HUu LUdng, 1976) kem theo thoai hoa hoan
4. Dau hieu hoi phuc than kinh
Dien cd giup ta thay dUdc nhiing trieu chilng sdm
nhat roi den dau hieu lam sang, sau m6i den dau hieu chan doan dien ve hoi phuc than kinh:
- Dau hieu hoi phuc lam sang
Cam giac dUdc hoi phuc dau tien, tiep theo la triidng luc cd, sau do hoi phuc van dong.
- Dau hieu hoi phuc phan ting dien (sau vai tuan khi co dau hieu hoi phuc lam sang mdi xuat hien dau hieu hoi phuc phan ting dien).
Phan ling thoai hoa hoan toan chuyen sang phan ting thoai hoa mot ph&n, roi sang tmh chiu kich thich dien binh thiidng: trUdc day mat hoan toan phan ilng dien thi nay lai thay day than kinh bat dau chiu kich thich vdi xung ganvanic, luc dau nguon cao, sau thap dan va sau do day than kinh chiu kich thi'ch vdi xung faradic ngUdng cao roi thap dan. Phan Ung chieu doc mat. Cac bucfc tien trien tU tU hang thang an khdp vdi sU tien trien hoi phuc ve giai phau va to chUc hoc he than kinh - cd.
- Dau hieu hoi phuc dien cd.
Su xuat hien cac song da pha thap bien do t i 50 - 300 microvon hdp thanh tUng nhom nho chUng to sii hoi phuc than kinh tiep tuc tien trien tot. NhUng dien cd khong cho biet mUc do hoi phuc than kinh toi da trong moi
trUdng hdp, chi qua ghi dien cd nhieu lan, khi ma khong thay dien cd do tien trien ntia la chUng to than kinh khong co kha nang hoi phuc them.
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Hinh 2.18: Dien cd do dien the thap (bieu hien hoi phuc than kinh
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Hinh 2.19: Dien cd do bieu hien hoi phuc than kinh rat kem
Hinh 2.20: Dien cd do co song da pha nho bieu hien chQc n5ng van dong dUdc hoi phuc tot
Hinh 2.21: Dien cd do co nhieu ddn vi van dong (chifc nang da ditoc hoi phuc hoan toan)