- Theo doi thifdng xuyen mach, HADM ap kpe TM TW vit so lifting nude til u, day la chi so danh gia b^nh nhan diityc truy&i du djch hay khfing.
1.DAI CUONG Bjnh nghTa
1.1. Bjnh nghTa
Gay than 2 xtfdng d in g tay la gay d doan than xtfdng co mang lien cot bam. nghi a la vao khoang 2cm dtfdi mau nhi dau (xUdng quay) va tren nep gap co tay 5cm (hinh 18.1)
C) day khong de cap tdi nhtfng gay dac biet nhtf la: Monteggia, Galeazzi, Colles.
Than xuong cingtay
Hinh 18.1. Gidi han gay than xi/ang cSng tay
1.2. Sinh ly sap - ngura cua cang tay
Sap ngtia la dong tac quan trong va duy nhat cua 2 xtfdng c&ng tay. Sap 90 do va ngtfa 90 do, sap qua thi khong lam dtfdc gi, con ngiia qua thi la dong tac cua ngtfdi an xin (Bohler).
True sap ngtfa c&ng tay la dtfdng th&ng no'i trung tam chom quay tdi mom tram tru. Xtfdng quay cong xoay quanh xtfdng tru th&ng.
Xtfdng quay va xtfdng tru bat khdp nhau: phia tren la khdp quay-tru tren, d dtfdi la khdp quay-tru dtfdi.
Dong tac sap: do cd sap tron, cd sap vuong phu trach (thin kinh giila chi
phoi) (hinh 18.2)
D on g tac nguta: do cd ngiia ngjin (than kinh quay) cd nhi d£u (TK cd bi)
Hinh 18.2. Cd sap tron va co sap vuong cSng tay
1.3. Djch te hpc
Gay than 2 xifdng cang tay la loai gay xifdng rat hay gap d tre em, dtfng thtf hai sau gay tren loi cau canh tay (hinh 18.3)
Tre em gap nhieu hdn ngtfdi ldn (5-10 lan).
Hinh 18.3. Gay canh ttfdi 2 xtfong cang tay 0 tre em
1.4. Nguyen nhan va cd che: chu yeu do chan thtfdng
Tre em xtfdng mem vi vay khi nga xtfdng bi uon cong lai va gay. Da phan la gay canh ttfdi, it di lech.
6 ngtfdi ldn gay than 2 xtfdng c&ng tay thtfdng gay rdi va di lech nhieu.
Neu do ch&'n thtfdng trtfc tiep nhtf tai nan lao dong, tai nan giao thong... de gay nen gay xtfdng hd.