Sagittal MRI of the knee showing a complete ACL tear.

http://www.google.com.eg/imgres?imgurl=http://uwmsk.org/static/residentprojects/ACLtear.jpg&imgrefurl=http://uwmsk.org/residentprojects/aclreconstruction.html&usg=__TQg5xEamowIodsJ25kYPIVMtnTI=&h=336&w=288&sz=30&hl=ar&start=5&sig2=w4OLBMVln4kj4Emcz5GiWw&zoom=1&itbs=1&tbnid=j_eNvwG6SZ9LbM:&tbnh=119&tbnw=102&prev=/images%3Fq%3DACL%2BTEAR%26hl%3Dar%26sa%3DG%26gbv%3D2%26tbs%3Disch:1&ei=ZgHlTPXsDoGLhQfL6Ki7DA