A: A broken walkway presents two problems. One problem is the fact that it may be a trip hazard. If the walk has displaced pieces which you or a guest may catch their foot on, it should be repaired or replaced. A second issue of a broken and tipped walkway is that they almost always tip towards the home. This creates a drainage path toward the home and may act as a water dam holding water against the basement wall.  Either of these situations is not desirable as water needs to be moved away from the home not towards it. If the walk is in good condition but has simply settled or tipped it is possible to have the walk mud jacked back to the level position. I have read recently that there is a new polymer material that is used to jack concrete up as well.