单侧手指[包括拇指]后天性缺失 Acquired absence of finger(s) , unilateral
手：指臂的末端，由腕关节、手掌、拇指和手指构成。
Hand: End part of the arm, consisting of the wrist joint, palm, thumb, and fingers.
上肢：双手拇指健全，每只手其他手指必须有三指健全，肢体和手指运动功能正常。
Upper limbs: hands thumb sound. Other fingers on each hand must have three to be sound. Normal motor function of limbs and fingers.
这种象狐猴一样的骨骼特征类似灵长类，包括爪形手、可对立的拇指、带指甲的无爪指和相对短的肢体。
The lemur-like skeleton features primate-like characteristics, including grasping hands, opposable thumbs, clawless digits with nails, and relatively short limbs.
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