My husband just had a total hip replacement. The doctor told us that he must be followed closely for some time because he has a “stovepipe” hip. What does this mean?

A “stovepipe canal” refers to the size and shape of the hollow part of the long upper leg bone called the femur. When a hip is replaced, the head of the femur is cut off and a new one is put in its place. The new head is attached to a long stem that slides down into the femoral canal.

The chances of the implant coming loose are greater if the canal is large and round or “stovepipe” in shape. Any sign of loosening must be reported right away. The doctor will also take X-rays and watch for any signs of problems.