This pertains to the new movie Logan, spoiler alert.
Is there an explained reason why Laura had an adamantium skeleton? If their goal was to make mutant super soldiers from a young age, I would think such a skeleton would hinder growth and disfigure her, thus making her useless as a super soldier. Why wouldn't they wait until she was fully grown?
She has more than just adamantium claws. The file we see on X-23-23 (Laura is the 23rd clone of the 23rd Weapon X program) shows multiple locations for adamantium injections. There is no proof that she had her claws removed for adamantium coating in the film universe. Unlike Wolverine though, it did not indicate she underwent complete adamantium bonding. Likely just adamantium lacing, like comic Bullseye or Sabertooth do at some points.
When official releases of the movie come out, a high resolution screenshot will prove this.
This is just one of the differences that the project takes. In the comics, Laura is not a child or preteen, she is a teenager. She is one of multiple female clones of Wolverine while the movie shows only one clone of multiple different mutants. She is not part of the Old Man Logan universe. Etc.
In the film universe, X-23 does NOT have a full adamantium-coated skeleton like Logan does (which is also the case in the comics). Instead, her organic bone claws were surgically removed, coated with adamantium, then re-inserted. One of the promotional videos for the film takes the form of a "leaked" video that shows what's being done to her by the project, and several scenes show the claws being surgically inserted:
If you look just below her feet in that screenshot, you can see four of the six claws still laying on the table. They're already coated with adamantium at this point, so they're going back in. Since there is blood on her feet & legs and only four claws left, they presumably already put in the two foot claws and are now preparing the arms.
Found my answer
She does not have a full skeleton, just her claws
From Wikipedia
Unlike Wolverine, however, X-23 has only two claws per hand which are her primary weapons of offence. She also possesses a single, retractable claw housed within each foot which she tends to use for defense. These claws are actually made of bone and were forcefully extracted by Zander Rice, sharpened, coated with adamantium, and reinserted into her body. Also unlike Wolverine, X-23 escaped before the procedure to fuse her entire skeleton with adamantium could be performed.
