Labs are often afflicted with hip displaysia (sp?).
Because labs were so popular several years ago, breeders were willing to breed dogs that had a proclivity for this disease out of greed. Of course, the unfortunate consequence is the dogs suffer. The disease can be treated with medication and excercise in many cases for a long time, up to the life of the dog. It is important to get it diagnosed as early as possible and begin treatment with medication, excercise, and diet.
While my lab, who lived to be almost 15 years old was not afflicted with this condition, my wife's beloved Rottie has a very mild case. She is healthy and happy, and it appears she'll live a long life with few ill effects.
All is not lost, surgery may not be necessary, at least not now, and the cost of treatment may not be nearly so high as you fear. In many cases, there is no major cost, no major ill effects if properly managed, and the dog will live a healthy, happy, and mostly normal life. Owning a good person is the key to how well the dog does.
