Regarding Zimmerman's injuries, consider the following bit of testimony - the UNIDENTIFIED MALE in this case is Deputy Prosecutor Bernie de la Rionda:
UNIDENTIFIED MALE: And isn't it true that a lot of statements that he made do not make sense in terms of the injuries that he described. Did he not describe to the police that Mr. Martin had him on the ground and kept bashing his head on the concrete over and over and just physically beating him with his hands?
GILBREATH: He has said that, yes.
UNIDENTIFIED MALE: And isn't it true that there is evidence that indicates that's not true?
GILBREATH: Yes.
Det. Gilbreath's testimony on redirect - minutes later:
O'MARA: The injuries seem to be consistent with his story, though, don't they?
Dale; The injuries are consistent with a harder object striking the back of his head than his head was.
O'MARA: Could that be cement?
GILBREATH: Could be.
O'MARA: Did you just say it was consistent or did you say it wasn't consistent?
GILBREATH: I said it was.
So Glibreath is seemingly claiming in one breath that the injuries were inconsistent with Zimmerman's account of having his head beat into concrete, yet very clearly states on redirect that the injuries were consistent with the same. A bit puzzling....
The relationship to the court between a prosecutor is
not a level playing field. The state is firmly tethered to the truth. Not only are they not allowed by canon to knowingly mislead the court though testimony or theories of crime, they are also bound as an affirmative obligation to actively seek out exculpatory evidence and to investigate resonable alternate theories of the crime. That's what got Nifong's jimmy in a jamb. When confronted with the actual results of Mangum's rape kit (7 distict semen donors between vaginal, anal and underwear specimins - yuck!) Nifong claimed he was only informed that the defendants' DNA was not found. The bar correctly asserted Nifong's affirmative responsibility to seek out and disclose exculpatory evidence and complete results of scientific tests. Of course, a defense is allowed any relevant defense available - even defenses they know to be false. Outside of sworn statements, they have no real responsibility to the truth.
Let's look at O'Mara questioning Glibreath:
O'MARA: Ok. Have you ever had your nose broken?
GILBREATH: No.
O'MARA: Have you ever had your nose fractured or broken.
GILBREATH: No.
O'MARA: You know that that was an injury that Mr. Zimmerman sustained, correct?
GILBREATH: I know that that is an injury that is reported to have sustained. I haven't seen any medical records to indicate that.
O'MARA: Have you asked him for them?
GILBREATH: Have I asked him for them? No.
O'MARA: Do you want a copy of them?
GILBREATH: Sure.
O'MARA: I'll give them to the state. It's a more appropriate way to do it. If you haven't had them yet, I don't want to cross you on them.
The state had the affirmative reponsibility to at least search for more authoratative evidence on the extent of Zimmerman's injuries, which they apparently did not perform. We also have Gilbreath changing his testimony about the consistency of these injuries.
Now look at the testimony Gilbreath gave to the prosecutor again:
UNIDENTIFIED MALE: And isn't it true that a lot of statements that he made do not make sense in terms of the injuries that he described. Did he not describe to the police that Mr. Martin had him on the ground and kept bashing his head on the concrete over and over and just physically beating him with his hands?
GILBREATH: He has said that, yes.
UNIDENTIFIED MALE: And isn't it true that there is evidence that indicates that's not true?
GILBREATH: Yes.
You could say that Gilbreath is making that claim using his experience as a detective or whatever, but he's in no position to testify as to the actual exent of the injuries - he has no expertise in that area. We now know that ABC released the newly publicised photo of Zimmerman's injuries to the police, plus the reponding detective's deposition describing the injuries and that of the medic that responded.
O'Mara will hammer this at trial. The detectives had possibly exculpatory expert evidence available that they did not seek out, instead relying on seemingly non-exculpatory and certainly non-expert testimony becuase it was what they wanted to hear.
The initial investigator is going to have to explain why they cut Zimmerman loose. If his injuries were completely inconsistent with his claims, they should have kept him. His judgement will have to be challenged by both sides.
The medic will have to testify that he advised Zimmerman to seek medical attention because that's protocol for a head wound. An EMT/paramedic is in no position to diagnose or indicate the absence of concussive injury.
So we're left with photo analysis after the fact vs. the results of Zimmerman's medical examination.