I wouldn't think milk-fever or anything to do with calving would be an issue this time of year, so is the concrete too slick or something? That's fixable if that's the problem, and he should make an effort to improve the surface. When a cow is down, sometimes you can roll her onto her side, slide a tarp underneath, roll her the other way, slide the tarp underneath the rest of her, then drag her out onto gravel or straw where she can get better traction to get up on her own. I've also used a skid steer in the past by rolling the cow into the bucket. I don't use hip clamps if I can help it.