osteocytes receive nutrients from the canaliculus's attached to the central canal, that brings in through the small microtubular tunnel and goes to osteocytes via gap junctions.
They maintain bone because they are mature bone cells.Canalicui is the site of osteocytes.
bone cells
'Osteocyte' means mature bone cell
From the nutrient arteries, to the cells. And it then pass from cell to cell through the canaliculi of their lacunae.