At age 6, Frida was stricken with polio, which caused her right leg to appear much thinner than the other. It was to remain that way permanently.
On September 17, 1925, at about age 18, Frida Kahlo was involved in a serious bus accident which left her with a broken spinal column, a broken collarbone, broken ribs, a broken pelvis, and 11 fractures in her right leg. In addition her right foot was dislocated and crushed, and her shoulder was out of joint. For a month, Frida was forced to stay flat on her back, encased in a plaster cast and enclosed in a boxlike structure.
She also turned to alcohol, drugs, and cigarettes to ease the pain of her physical suffering