A 54-year-old woman arrives at the emergency department with a hand injury sustained in a fall. In the restroom, the patient stumbled and fell backwards onto her outstretched right hand. She was able to get up, but she has been experiencing right wrist discomfort and finger numbness since the incident. Obesity, hypertension, and type 2 diabetes mellitus are all present in his medical history. A tiny hump is detected immediately below the palm of her right hand, and there is diminished feeling in the palmar aspect of her first three digits. A dislocation of the lunate resulting in median nerve compression is suspected. On a normal x-ray, which of the following indicated bones is most likely displaced in this patient?

Question

Quizplus · Accepted Answer

Eductional Objective: The lunate bone is the more medial (ulnar) of the two proximal carpal bones that join the radius. A fall onto an extended hand can result in lunate bone dislocation and median nerve compression (eg, wrist discomfort, numbness in the first 312 fingers).

A 54-Year-Old Woman Arrives at the Emergency Department with a Hand