Continuity mistake: In the beginning of the movie when the Angels are rescuing the US Marshall, Lucy Liu is wearing stiletto heeled boots. When they jump out of the window, the heels are square. (00:01:30 - 00:06:40)
Continuity mistake: At the beginning of the movie, when the three Angels and the US Marshall escape from the house in Mongolia, they break a window and there are many glass chips, but when they hit the ground, the glass has disappeared. (00:06:20)
Continuity mistake: When the Angels are dancing at Natalie's place, Alex is wearing very high wedge heels. When they tip over the couch, Alex is suddenly barefoot. (00:13:30)
Continuity mistake: When the Angels are dancing to Hammertime, there is a box next to the TV and on top of that box is a smaller, silver box. When they jump over the sofa, that silver box has vanished. (00:13:30)
Continuity mistake: At the beginning of the Caulfield house scene, the shadows are pointing to the left. When the Angels enter the house, the bright shaft of sunlight coming through the hole in the curtains shows that the sun is now on the other side of the sky. (00:19:35 - 00:20:35)
Continuity mistake: When Natalie is talking to the surfer by his car, Alex and Dylan are under the car looking through his belongings. After he gets into the car to drive off, it cuts to Natalie and she says something, cuts back to the surfer pulling away in his car and then cuts to a shot of Dylan but you can see the surfer's leg/towel in the shot. Shouldn't he already be in the car? (00:28:45)
Continuity mistake: When the Angels are at the races Natalie wiggles her head at a man and streches her arms out. Then it cuts to the man and behind him is a man on a bike jumping off a ramp and he is in mid-air. It then cuts to Natalie, then to the man again and the same man behind him jumping off the ramp, has only just began to jump. (00:30:25)
Continuity mistake: When the cute assassin comes up to start the bike race, he has no top on and his upper torso is bare, however in the next shot he has a red racing jersey on. (00:31:10)
Continuity mistake: In the dirt bike racing scene, there's a long "slow-motion" shot that includes a large section of a very patchy-cloudy sky. In all other shots of the race, the sky is clear blue. (00:32:45)
Continuity mistake: At the end of the big motorcross scene, the Creepy Thin Man's bike hits a spar right where it connects to a leg on one of the electrical towers. The bike hits above the front tire and flips over the top of the bar, while the obvious dummy falls backward away from the bike. But when it cuts to Creepy Thin Man getting up and staggering off, the bike is back in front of the leg, right behind him. With the trajectory of both falling objects (bike and the Thin Man), he should have been thrown much farther from the metal leg and the bike should have landed yards behind it, rather than the two landing close together. (00:35:20)
Continuity mistake: When the Angels are going to talk to mother superior, they all have on some sort of lip gloss/stick, but when they are at the desks, they all have plain lips, then when they are leaving, they all have the same lip gloss they had when they were coming. (00:41:30)
Continuity mistake: When the Angels are sitting at the desks talking to mother superior, she asks the Angels to move forward. Watch Cameron Diaz. The first time she grasps her desk to bring it forward, it's on the front bit. Then it shows a shot from behind and she is grasping it from the sides, then back to the front shot and she is grasping it from the front again. (00:41:45)
Continuity mistake: This is during the fight between the Angels and O'Grady's thugs. Seamus has Dylan against a container. He aims to punch Dylan but misses and hits the container to the right of her face instead. There's white writing on the container. Cut to the next shot and the writing is now to the left of Dylan's face. (00:56:25)
Continuity mistake: After the fight with Seamus O'Grady, the Angels burst through the roof. Drew Barrymore grabs a short piece of wood to slide down the rope with. When she slides down the rope, the wood is longer. When they land, the wood is even longer. (00:56:35)
Continuity mistake: When Natalie jumps into the boat she is wearing flat heeled shoes, but in the earlier fire scene she is wearing black stiletto boots. (This is visible in zoom and slo-mo.) (00:58:55)
Continuity mistake: When the Angels find the photos on Emmet's body at the coal bowl, the picture of Helen Zaas shows her holding her Lucky lighter. If you look closely, you can see that it is completely different to the Lucky lighter which Dylan carries. The stars part of the 'Stars and Stripes' design cover the whole lid on Dylan's lighter, but on Helen Zaas's lighter it only covers half of the lid. (00:59:50)
Continuity mistake: When Nat has the record in her hand from all the stuff Dylan left, in the next shot, she is holding a picture of the Angels with both hands, and the record is on the table behind her. (01:06:05)
Continuity mistake: When Alex and Natalie are chasing the man in the car, the headrest changes from black to red. (01:10:20 - 01:11:15)
Continuity mistake: When Bosley (as a crossing guard) is in the middle of the road, attempting to stop Ray Carter in his car, the waiting children disappear and reappear between shots. (01:10:40)
Continuity mistake: When Bosley holds up the stop sign it is unmarked on both sides, but when Carter drives away there is a large scratch down through the 'O'. (01:10:45)
Answer: It is making fun of the show CSI. Even still, there are ways of telling if someone had a knee problem by the way they walk and put pressure on the foot. Being able to tell if it was a torn tendon, I don't think so. Check out the way people run and you can tell if they have hurt something in the past because of which leg they favor.