Osteochondritis Dissecans in Welsh Springer Spaniels: A Growing-Puppy Problem

During normal puppy development, a layer of cartilage gradually converts to solid bone as the skeleton matures. OCD happens when this conversion process goes wrong in a specific spot, most often the shoulder, though it can occur elsewhere, leaving a piece of cartilage that never properly attaches. Under the mechanical stress of a growing, increasingly active puppy's weight and movement, that loose piece can partially or fully separate, creating a flap that irritates the joint with every movement.

Rapid growth is a well-documented risk factor, since a skeleton developing very quickly gives less time for that cartilage-to-bone conversion to happen cleanly. A Welsh Springer Spaniel puppy fed to grow quickly, or one simply genetically inclined to a faster growth curve, carries more opportunity for this conversion process to go wrong somewhere along the way than a puppy growing at a slower, steadier pace.

The resulting lameness typically appears with no clear triggering injury: a puppy that was running normally starts limping on one leg, often worse after exercise and better after rest, though it can also present as a subtler, intermittent hitch in the gait rather than an obvious limp. Because this pattern can look like a minor sprain, many cases aren't investigated immediately, even though earlier diagnosis generally means better treatment options.

Because rapid growth is a known contributing factor, much of the useful prevention centers on feeding and exercise choices during the specific window when this condition develops.