Thin squad, Xmas run of games in a short period. Fatigue can cause these type of injuries.
Fatigue really shoudnt play a part surely? Yes we have had a busy 10 days or so, but lets not forget we have been playing a game a week for most of the season so I cant see fatigue as an issue. Also, lets not forget that Allen has only played a few games the whole season since Gerrard has been out, and neither Sakho or Hando have played every game, all have missed/been rotated every once in a while especially earlier in the season.
Sometime you are just unluky.
Of the earlier injuries, no injury is a surprise at Gerrards age. The one that was preventable in my very amature opinion I should add I would say was Sturridges as he'd been suffering with it for a while and instead of resting it seemed determined to want to play for England (who seemed determined to want to pick him)
PS thin squad is definitly an issue, are still a lot of gaps in the squad including even positions like the midfield where we were quite well stocked at the begining on the season.