II. DAU DAY THAN KINH GIAN SUON
B. LIET DAY THAN KINH DUI (L2, L3, L4) 1 Giai phau
1. Giai phau
Day than kinh dui la day hon hdp gom nhiing spi cua r l L2, L3, L4 tao nen (hinh 6.1). Khi gan tdi cung dui, day dui chia ra 4 nganh cung: Day cd bi ngoai va trong, day cd tti dau dtii, va day hien trong (nerf saphene interne).
Nhiing sdi van dong phan bo" cho cd that liing chau (m.iliopsoas) va tat ca cd d vting trtfdc dtii: cd may (day cd bi ngoai), cd ttf dau dtii (day cd bi ngoai), cd tti dau dui (day cd tti dau dtii), cd ltfdc va cd khep nhd (day cd bi trong va day bit). Day dtii la day duoi cang chan va mot phan nao tham gia vao dong tac khep dtii.
Cam giac da d vung trtfdc trong dtii (day cd bi ngoai va trong), d dau goi va cang chan trong (day hien trong (hinh 6.2).
2. Trieu chting
- Van dong: mat kha nang gap va duoi khdp goi. Cam giac: mat cam giac mat trtfdc dui, mat trong cang chan va bd trong ban chan (hinh 6.2).
Phan xa: mat phan xa banh che.
- Ttf the: di kho (nhat la khi thtfdng ton hai ben) nhieu khi di giat ltii lai de hdn.
- Dinh khu thtfdng ton:
+ Thtfdng ton day than kinh dtii d dtfdi day ch in g ben: Khong the duoi cang chan, mat cam giac d vting phan bo day than kinh hien, mat phan xa goi, teo cd tti dau dtii.
+ Thtfdng Ion day than kinh d tren day chang ben: co ket hdp them roi loan cam giac trtfdc dui.
+ ThUdng ton day than kinh dui d cao: co roi loan chtfc nang cd that ltfng - chau nen khong the gap dui va nang than day trong ttf the nim . Benh nhan di kho khan.
Ki'ch thi'ch day than kinh dui: co dau hieu Wassermann.
3. Nguyen nhan
Hinh 6.18: Nguyen Van T Zona than kinh dui.
It thiidng ton rieng 16. nguyen nhan thudng ton do: - Ap xe cd that lung.
Gay xUdng chau hay xUdng dui.
Vet thUdng trtfc tiep vao day than kinh - Phong dong mach dui.
- Viem day than kinh (nhat la do dai thao dudng). Zona than kinh dui (hinh 6.16).