I am trying to decide between a Hip Resurface and a THR. Some of the orthopaedists I have seen claim that the THR is stronger and more durable and will be a better choice for a "younger" (47) more active guy (judo/jujitsu player) due to the length of the stem into the femur as opposed to just relying on the strength of my own femoral neck after a hip resurface. I am not aware of having any bone density or mass issues. I am very eager to get back to my activities. Thoughts? Thanks, Brian
That sounds like bullshit to me. As long as you have good bone density, your risk of femoral neck fracture is very low, and it reduces to near zero (that of the general population) by six months post-op. The fact that you're young makes resurfacing more reliable, not less.
People with low bone density can sometimes do better with THRs because they're at risk of breaking their hips. Not because of the surgery, necessarily; it's just a risk that the frail and elderly face. Of course, you can't break your hip if you have no femoral neck to break.
Over time, the resurfaced hip is likely to be more durable. First, it will almost certainly never dislocate, whereas dislocation with THR is a significant failure mode. Properly installed resurfacing implants wear very slowly. It's unlikely that wear alone will ever require them to be replaced.
Wear debris is very small, and adverse tissue reaction is very rare. If you have an experienced surgeon install your implants correctly, you'll almost certainly never have a wear debris problem.
I suppose a THR with a metal-on-metal, anatomically sized bearing might be a close second to a resurfacing, but there's still the problem of the stem extending down the femur and loading the bone in an unnatural way. I still haven't heard of doctors allowing their THR patients to run and jump, whereas doctors typically give no restrictions to resurfacing patients after the first year.