Bone fractures

1. (butterfly) two oblique fractures create a triangle or wedge shape
4. runs parallel to long axis
7. break in the neck of metacarpal bone
8. compression that causes buckling
13. breaks into three more pieces
14. broken ends of the bone are driven into each other (also called buckled) often in children
16. bend but no break
20. bone fragments are pulled apart the longitudinal axis (seatbelt fractures)
23. fracture line runs straight across
24. bend with fracture on one side
27. the force travels (think pelvis)
28. occurs with severe twisting or rotational force
29. Fx at proximal 1/3 or ulna with anterior dislocation of radial head
30. break at base of 5th metatarsal

2. fx of distal radial shaft with dislocation of distal ulna
3. fracture-dislocation at the base of the thumb's first metacarpal
5. rips bone off ligament (tension/hyperextension)
6. bone goes posteriorly
9. (crossover) fractured fragments shift past one another causing bone to overlap
10. bone goes anterior
11. collapse of bone (think spine)
12. bone is contained in body (also called closed)
15. growth plate fracture
17. break in small bone near base of thumb
18. fragments are pulled apart along the longitudinal axis of the bone
19. occurs when broken bone is pushed inward (think skull)
21. star shaped fracture (patella common)
22. due to repetitive use
25. broken bone pierces through skin (also called open)
26. fractured in at least two places