Bone remodeling is a temporally regulated process resultingin the coordinated resorption and formation of skeletal tissuecarried out in basic multicellular units throughout life.1 Signalsdetermining the fate, function, and ultimate death of cellsof the osteoclast and osteoblast lineages define the populationsof cells that resorb and form bone in basic multicellular units.There, osteoblasts appear at sites vacated by osteoclasts, aprocess called coupling. As resorption by osteoclasts is terminated,the resorptive surface is covered by a thin layer of cement,where osteoblasts assemble to form bone and fill the cavity.2
From the Department of Research, Saint Francis Hospital and Medical Center, Hartford, Conn., and the University of Connecticut School of Medicine, Farmington.
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