CUT­TING EDGE

Best Health - - RELATIONSHIPS -

What’s in­volved in an ac­tual joint re­place­ment? Dr. Khalid A. Syed of Toronto Western Hos­pi­tal gives the step-by-step on a typ­i­cal hip op­er­a­tion:

1.

Re­plac­ing the hip joint means giv­ing the pa­tient a new ball-and-socket. “We cut the ball off the fe­mur and then put the [new pros­thetic] ball on a [metal] stem, which we pound into the bone.”

2.

The sur­geon then ex­pands the socket side and puts in a ti­ta­nium-coated cup, again pound­ing it into the bone.

3.

“We put a piece of plastic liner that locks into the metal cup.” This plastic acts as the car­ti­lage, so the ball and socket can glide. “And that’s your new joint: metal, plastic, metal, metal.”

PLASTIC LINER FEMORAL HEAD FEMORAL STEM

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