The list has grown by almost a third since the pandemic began.
Scoliosis is an abnormal curvature of the spine, which is often diagnosed in childhood.
Sometimes surgery's needed to address the painful problem.
New figures show the waiting lists have lengthened during the pandemic.
In November 2019, 148 children were waiting for scoliosis-related procedures in Crumlin, Temple Street and Cappagh hospitals.
At the end of last month, that had risen by 32 per cent, to 196.
Children's Health Ireland says it has made great efforts to continue with scoliosis surgeries despite the restrictions imposed by Covid-19.
It says 163 surgeries were carried out last year, compared to 189 in 2019, and there have been 26 more procedures this year than the same period last year.
Local TD Helps Gardaí To Remove Knife From A Distressed Man's Possession Near Leinster House
Fire Crews Successfully Battle Major Gorse Fire In Glencree National Park Overnight
Garda Renew Appeal For Info On Paul 'Frank' Byrne Found Murdered In Blessington
Nearly 1,000 Wicklow Children in Oversized Primary School Classes, TD Reveals
Uisce Éireann Warning As Six-Week Hosepipe Ban Takes In Stretches Along The N11 In Wicklow