pano, pano, my boy had it from 4 months old untill he was 8 months old and he had it bad. it didn't go and come with him. he had it steady for 4 months. i use to massage his legs. he seemed to like it. i still massage his legs. i can't think of the name of the medicine the Vet gave him but it's common. the Vet gave him enough pills to last 2 weeks and only give it to him when he was in pain or limbing. we cut his walks down to nothing and no dog parks. we did allow a friend to come over with his pup and they would play for short a period of time. we allowed this once a week. i was told to watch the protein level in his food. i forget the percentage. as time passed you could see him getting better. he started running a little more. there's this nice small field behind a store that we go to and i would take him there to be off the leash. we started to notice how he's running and better and little to no limbing after playing. then one day i was letting out of the car and a rabbit was in the bushes beside the car. the rabbit took off and so did Loki. he was running in full stride and the pano was gone. i've been told it can come back untill they're a few years old. my last Shep had it at 6 months old and it came back when he was 1&1/2 yrs. old. massage his legs and feet he might like it and it might help. good luck, he's going to be fine.