A few weeks ago, my brother and I took Springen bike riding. A few days later he was unable to get up and walk and was acting like he was in a lot of pain. We took him to the vet and they told us we over exercised him and he was just sore, so they gave us some muscle relaxers and pain killers. We gave him the medicine, but it didn't seem to help him at all. We went back and they took x-rays, and apparently something was wrong with his shoulder. They gave us steriods to give him, saying it should heal right up.
He seems to be much better now, but his spine is pointed at an odd angle and his hips are not normal. He's lost a lot of weight and muscle. Honestly, I think there is something wrong with him other than an injury. Although he's much more energetic, he's just not the same as he was. My brother took him to the vet today and they took some blood work. I'm not sure exactly what they're looking for, but I will update you all. Paws and Fingers crossed for my sweet boxer boy.