That dude's left side legs look jack'd up to me. He seems way too skinny, thinking he's injured pretty good; those legs like bowed at the knee joints but could be camera angle maybe.
I think what you are seeing is the way the hair coat has grown. I have seen this in several bucks thru the years. I have seen in bucks in good to great body condition. The right front leg looks to have had a scare and old injury. He is walking while pic was taken causing moving blurry effect on him also I think. Also looks to have callused knees, which I have seen in bucks as young as 3 yrs old. It is mid-Dec so rutting and fighting would be expected to cause broken antlers. Here are some pics of bucks with hair "striping" like this buck has. YOu can really see it on bucks in the full sun early or late in the day. I have seen with IR on a TC glowing off of the coat also on occassion. He looks like a normal rutted down Dec buck to me.
Just see a rutted down buck. He will be on food sources soon (if not already). In fact, that buck has hardly any antler damage (one brow tine) to speak of. Don't see any visible scarring or wounds, but the camera angle doesn't provide much of view.
No doubt.... lost a lot of body weight, but that is typical.