Kev tawg yog qhov raug mob ntawm cov leeg ua los ntawm kev tawg ntawm ntau dua lossis tsawg dua ntawm cov leeg nqaij (cov hlwb muaj peev xwm ntawm kev cog lus muaj nyob hauv cov leeg). Nws yog theem ob rau kev siv zog ntau dua li cov leeg tuaj yeem tiv taus thiab yog ib txwm nrog los ntawm cov ntshav hauv zos (uas ua rau hematoma).

Lub sij hawm "tawg" yog sib cav; nws yog ib feem ntawm kev faib tawm hauv tsev kho mob uas peb pom qhov curvature, contracture, elongation, strain thiab tear lossis rupture. Txij tam sim no, cov kws tshaj lij siv lwm qhov kev faib tawm, ntawm Rodineau thiab Durey (1990)¹. Qhov no tso cai rau qhov sib txawv ntawm plaub theem ntawm cov leeg nqaij ntawm keeb kwm keeb kwm, uas yog hais tau tshwm sim tshwm sim thiab tsis ua raws li tshuab lossis txiav. Kev sib tawg feem ntau yog mus rau theem III thiab zoo ib yam li cov leeg nqaij.