The captain of the speardwarf squad in my fort has been through some rough fights. First she took on a giant cave spider almost single-handedly while on patrol in the caverns. She managed to slay it with the help of her faithful war dog, which distracted the giant cave spider's webbing long enough for her to stab it in the head. But she had gotten her right arm bitten during the fight and lost the ability to grasp with her right hand.
Then, a few months later, the speardwarves were sent into the caverns to slay a duo of giant blind cave ogres. The captain was the first onto the scene of the fight, but because of her arm injury, she could not wield a shield and spear at the same time. Her spear was strapped to her back and she had only her shield out. I did not realize this until she was already in battle, otherwise I would've adjusted her uniform to only wield a spear.
So she wound up fighting against two giant blind cave ogres with only a shield and her crippled arm for a bit while the rest of her squad caught up. She fought valiantly, blocking attacks, bashing with the shield, scratching with her crippled hand, and even biting her foes. She actually scared the two ogres. Not long before her squadmates showed up to reinforce, she was bitten by one of the ogres on the left arm. The force of the giant ogre bite mangled her entire arm and shoulder beyond recognition. She was reduced to kicking and biting the ogres before her teammates arrived to stab the ogres to death.
And so now she's entirely lost the ability to grasp either a spear or shield. It's a real shame, she's one of the highest skilled speardwarves in my military. I'm considering retiring her from duty and making her the fort's first scholar. Maybe she could write books about stabbing things with a pointy stick and pass her knowledge on to others. Not sure how she'd write without the ability to grasp, but I'm sure she could figure something out.