Sharp shooting pain from knee to mid thigh. Difficulty walking. Dx: o/a (r) knee from fall. Now swollen ankle, top of foot, pain in toes. Related?

Possible OA feet ank. Possible oa in feet and ankles. Also could be pain for compensation due to oa in the knee which could alter your walking. See your doctor for evaluation.
Compensation. The pain in the foot and ankle may be due to compensation. Meaning you may be walking differently due to the knee pain causing other lower extemity joints to hurt.