Two NFL teams in 2017 had significantly more stability along the offensive line than they did in 2016. One of those franchises returned to the playoffs for the first time in 14 years. The other became just the second club in league history to lose 16 games in a season.
Jason McIntyre developed a metric to measure offensive line continuity back in the early days of FO (when FO Almanac was still Pro Football Prospectus) and we have since gone back and calculated it for every team since 1999. The continuity scores are based on three variables: number of starters used; number of week-to-week changes in starting lineups; and the longest starting streak of any one five-man unit.