Which type of fracture occurs when the bone penetrates the skin?

Colles' fracture is a type of distal radius fracture that results in angulation and swelling of the distal forearm near the wrist joint.

a. Pain and swelling of the ankle: Pain and swelling of the ankle are not related to a Colles' fracture, which occurs in the distal forearm, not the ankle.
b. Deformity and shortening of the affected limb: Deformity and shortening of the limb may occur in some fractures but are not specific to a Colles' fracture.
c. Loss of sensation and motor function distal to the fracture: Loss of sensation and motor function may occur in nerve injuries associated with fractures, but it is not a characteristic of Colles' fracture.

: Stress fractures are small, hairline cracks in the bone that occur due to repetitive stress or overuse. They typically present with a gradual onset of localized pain that worsens with activity.

a. Severe pain and deformity: Severe pain and deformity are more commonly seen in acute fractures resulting from trauma or high-impact injuries, not stress fractures.
b. Sudden onset of swelling and bruising: Sudden onset of swelling and bruising is more indicative of acute fractures, not stress fractures.
d. Inability to bear weight on the affected limb: Inability to bear weight may be present in some fractures, but it is not a specific characteristic of stress fractures.