Actually in Gordon’s case I’d say he doesn’t move his neck much at all.
What if I told you that in HL that tech panel was in the first person view on only one hand, but definitely NOT on the third person model at all?
Now what if I told you that concepts from HL show the hands both WITH and WITHOUT the panel?
If the concepts and actual in-game art are inconsistent, then how the hell do we make it match the original, with the goal of achieving consistency? Sometimes you gotta make decisions. 
The original Half-Life == actual in-game art that appeared in Half-Life! You know as well as I do that concept art is almost never representative of the finished product, you’ll drive yourself crazy trying to match concept art that isn’t even consistent. Valve already made the decision for you, man, they decided to put the sweet morphine control panel on there!
My last post on this subject, I swear.
;( LooksHisScreenshots cries
Sad…cry…get away forever… :’(
What Wasabi said. Also, you keep saying it’s on his wrist, when it’s on the back of his hand.
Stop right there. Show me an official source anywhere for that statement, and the implied extension of it that you seem to think means the mod should be slavishly faithful to every detail (despite all the myriad screenshots that show sometimes fairly drastic diversions from the original).
And to reiterate, you didn’t notice this panel in ten years. No matter how strenuously you stress it no-one can ever take seriously the claim that this is a matter of any importance at all.
I’d have to assume the third-person hands were made with a lower level of detail (along with every other p_model), really, so it’s hard to discredit the panel on that basis.
Hmmm, good suggestion… but I think the mod already has enough cvars!
So? They could easily have added a coloured block to show that something was there if they thought it was important.
This, basically…I went looking and could find no such thing
Of course! That’s what Valve was thinking at the time! “Hey guys, we really need to put some sort of morphine administration panel on this suit to justify all the injections the player gets!”
No, I’m pretty sure they put it there thinking “Hey, this suit is pretty cool. What if we put some kind of control panel on the hand to make it look more futuristic?”
Uh because the HD pack is not made by Valve (the actual company responsible for the awesomeness that is know as the Half-Life universe) but by another group called Gearbox. Gearbox also made Op4 and Blueshift which are also not considered cannon.Besides gearbox switched out a Glock with a Beretta(worst decision ever!) and the MP5(which made sense that it shared bullets with the pistol) with an M-4(which did not make sense that it shared bullets with the pistol)
Are you retarded? Your wrists move alot more than you think. Infact the most easy tasks would be extremely difficult if your wrist could not move. Besides everyone knows that crowbar swinging is all in the wrists. Alot of things are all in the wrists like: shooting a basketball, writing, drawing, fishing, sword fighting, seal clubbing, ninja start tossing, knife throwing, conducting an orchestra,boomarang chucking, and flag waving just to name a few.
Reloading, grenade tossing, weapon switching…
…pressing buttons, turning wheels, planting laser tripmines, fingering the arseholes of bee-shooting aliens, pretty much everything Gordon does, tbh.
i think that the morphine injector should be on the chest part of the suit… near the heart
Since we are in the realm of hypotheses, just to add some “informed” noise, there were experiments of syringes that needed no needle at all, just a very strong pressure that kind of “seeped” the medication in the vein. Some movies toyed with that kind of concept too (usually with sickly green or fluo bluish liquids, but WTF)
And yes, near the heart or the neck seems a better place for an injector. “Morphine administered” … on the wrist of the arm that has just been ripped off the HEV user’s body. meh. 
EDIT 2: Maybe someone has it or can dig it in some game store, but I recommend reading the Heavy Metal rulebook for Living Steel. Among the fiction of powered / smart armors, it gives very good rationale for subsystems and injectors (such as, “the computer controlling the most vital systems of the suit was placed on the back, behind the heart. On the assumption that if a shot destroyed it, the user would have more pressing problems to deal with anyway”.
Most diabetics will tell you that needleless injections have been around for a while.
It would make sense for me to have them placed all along the body like those pads they put on you head for neuro-analyisis
EDIT: Those blocky shapes remind me of HL…