Complex sentence: David, a seven year old boy with Silver-Russell syndrome during a week in grade two public school undergoes surgery to lengthen his left leg during his growth spurt, enabling him to walk the rough road we all travel with confidence.
Split into simpler sentences: David, a seven year old boy with Silver-Russell syndrome during a week in grade two public school. David has undergone surgery to lengthen his left leg during his growth spurt, enabling him to walk the rough road we all travel with confidence.