Fractures Flashcards
Dislocation
Complete loss of contact between the articular surfaces of a joint
Subluxation
Incomplete dislocation resulting in a non concentric joint surface
Reduction
To return a fraction or dislocation to anatomic alignment
Nonunion
Failure of bony edges to unite
Malunion
Healing of the bony fragments in a faulty position (get imperfect alignment, deformity, or rotation)
Stages of fracture healing
- Inflammation (days) - Hematoma, inflammatory cell proliferation
- Repair (weeks) - Soft callus, hard callus
- Remodelling (years) - Lamellar bone continues to remodel by Wolff’s law
Fracture complications - Early local
- Infection
- Compartment syndrome
- Neurologic injury
- Vascular injury
- Implant failure
- Fracture blisters
Fracture complications - Late local
- Malunion
- Nonunion
- Avascular necrosis
- Osteomyelitis
- Post-traumatic arthritis
- Heterotropic ossification
Fracture complications - Systemic
- Sepsis
- DVT/PE
- Fat embolism
- ARDS
Traumatic fractures
Normal bone + Abnormal force
Stress fracture
Normal bone + Repetitive force
Pathologic fracture
Abnormal bone + Normal force
Describing fractures
- Location
- Fracture pattern
- Open vs closed
- Intra or extraarticular
- Displacement - apposition, angulation, rotation
Describing fractures - 6 A’s
- Anatomy - Bone? Where on the bone? Morphology?
- Articular - Intra vs extra
- Apposition - %
- Alignment - Varus, values
- Angulation, rotation
- Apex
Heterotropic ossification
Formation of bone in abnormal locations (e.g. muscle) secondary to pathology