In my case, the end of my femur (thigh bone) died a bit, and depending on the stage some pieces have either broken off or they're smashed up just hanging in there with the cartilage. The doctors aren't sure if the cartilage is in tact or damaged either. They can't really tell until they go in and look, but they think mine is stage 3. Here are the stages:
Stage I—Thickening of articular cartilage and low signal changes (stable)
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Stage II—Articular cartilage breached, low-signal rim behind fragment indicating fibrous attachment (stable)
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Stage III—Articular cartilage breached, high-signal changes behind fragment and underlying subchondral bone (unstable)
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Stage IV—Loose body (unstable)
(from http://www.aafp.org/afp/2000/0101/p151.html)
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Mine may have been caused from doing gymnastics for 8 years, track, cheerleading, or marching band since they are all high impact. My dad and brother also had it. Back when my dad had it, they casted his legs. For my brother, they drilled into his bone to restore the blood flow to the dead bone which is usually successful for teenagers. The doctors say mine probably started in late elementary school or middle school since that's when I remember my knees beginning to hurt.
An MRI of my left knee from the side. The arrow is pointing to the crack in the bone, and the fluid building up around it. |
X-rays of both knees bent, from behind. This is my left knee compared to my right. the darker area on the left is the damaged part when compared to the healthier right knee. |
The other doctor (the one I'm going with) wants to clear out the dead bone, then replace it with a synthetic "plug" that will fit into the space he clears out. My healthy bone and cartilage around it will eventually take over the degradable plug and kind of eat it up, replacing it with healthy bone and cartilage. I can't find much online about it because I'm not sure of the exact name of the plug. I'm going with this procedure because they should only have to open my knee 1 time instead of what could be potentially 3 times. They also won't have to take part of my tibia out, which I think would hurt as much as the femur part.
So...that's the plan for what's happening during surgery tomorrow. I'm trying to just pray and relax, but I'm still quite a bit nervous. Hopefully it all goes well.
For more info about osteochondritis dissecans:
This website has a quick description of it (and the definition from above): http://www.medicalnewstoday.com/articles/166764.php
This one is from the Mayo Clinic and is more detailed:
http://www.mayoclinic.com/health/osteochondritis-dissecans/DS00741
And this one has current research about osteochondritis dissecans:
http://www.osteochondritisdissecans.org/