MSKS Radiology Lecture 1_Intro to MSKS radiology Flashcards
What are the 6 Acute Fracture Mimics?
• Sesamoid Bones • Apophyses • Accessory ossicles (ossification centers that do not fuse to parent bone) • Nutrient Channels • Unclosed Synchondroses • Old Fractures
What is the difference between an epiphysis and an apophysis
An epiphysis is the distal end a bone that is part of a joint. and apophysis is the distal end of a bone where a tendon attaches. Both continue to grow until the growth plate fuses.
What is intra-articular extension
An intra-articular fracture is a bone fracture in which the break crosses into the surface of a joint. This always results in damage to the cartilage in synovial joints
Describe the following types of fractures:
Bowing
Torus
Greenstick
Simple
Comminuted
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What are the two types of Comminuted fractures?
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Describe displacement (medial and lateral) and angulation (medial and lateral)
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Describe the following types of fractures:
Transverse
Oblique
Spiral
Longitudinal
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What is an Avulsion Fracture
It is when a bone fragment is pulled from its parent bone by a tendon or ligament.
How is a nutrient channel distinguished from a fracture?
A nutrient channel has sclerotic margins, and will not pass through the entire bone.
Describe rotation, shortening, and distraction
What is a Synchondroses
cartilaginous unions between bone composed of hyaline cartilage & exist between ossification centers of developing bones, and gradually ossify. Synchondroses can close assymetricly (ie one closes before the other)
Fatigue fracture vs Insufficiency fracture
- Fatigue fracture: abnormal stresses on normal bone
- Insufficiency fracture: normal stresses on abnormal bone
Practice naming fractures
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