claim: Johnny Van Zant still performs with Lynyrd Skynyrd.
evidence: Dr. Hiltrud Strasser -LRB- born 1943 , Leipzig , Germany -RRB- is a German veterinarian , who has worked for many years on the anatomy , physiology , pathology and rehabilitation of horses ' feet .. Leipzig. Leipzig. German. Germany. veterinarian. veterinarian. anatomy. anatomy. physiology. physiology. pathology. pathology. rehabilitation. Physical therapy. She has published papers and books on this topic since the 1980s .. Her primary interest is foot balance and trimming , especially in relation to barefoot trimming and remedial trimming of foot conditions such as laminitis and navicular syndrome .. barefoot trimming. Barefoot horses. laminitis. laminitis. navicular syndrome. navicular syndrome. As well as publishing papers and books she also runs courses for horse owners , farriers and veterinarians in Europe and elsewhere .. horse. horse. Europe. Europe. Her courses also concern the holistic care and rehabilitation of horses .. rehabilitation. Physical therapy. Strasser theory is based on naturalization of a horse 's management -LRB- no stalls , herd life and constant free movement -RRB- , on de-shoeing of shod horses and on a trim devoted to restore normal shape and function of their hooves .. horse. horse. There are many relations between Strasser theory and Jaime Jackson theory , after his observations on free roaming US mustangs .. Jaime Jackson. Jaime Jackson. mustangs. Mustang ( horse ). She has also co-authored a recent book with Robert Cook , covering bitting injuries and other problems associated with horses ' bits .. Robert Cook. Robert Cook ( veterinarian ). Critics of Dr. Strasser 's method of hoof care allege that her methodology may result in lameness , pain and discomfort .. She herself outlines circumstances where her extreme trim could result in the death of the horse under some circumstances .. horse. horse. For this reason , many mainstream practitioners hesitate to recommend the more extreme aspects of Strasser 's methods .