WorksheetsBone Healing Quiz
Total questions: 20
Worksheet time: 10mins
Primary bone healing occurs when:
There is micromotion at the fracture site
Rigid internal fixation eliminates movement
Fracture is treated conservatively
A large callus forms
Gap healing occurs when:
There is no fracture gap
Callus forms immediately
A small gap remains after rigid fixation
The fracture is unstable
Contact healing occurs through:
Soft callus formation
Cutting cone mechanism
Fibrocartilage formation
Endochondral ossification
Soft callus is typically visible on X-ray around:
Day 1
1 week
3 weeks
3 months
Hard (bony) callus formation begins around:
1–2 days
1 week
3–4 weeks
1 year
The remodeling phase of bone healing lasts approximately:
2–3 weeks
3 months
6 months
Up to 2 years
A 55-year-old diabetic patient with an open tibial fracture is most likely to show delayed healing due to impairment in which stage?
Remodeling
Callus consolidation
Hematoma formation
Inflammation and cellular proliferation
Which fracture location is MOST likely to heal rapidly due to direct blood vessel invasion of trabeculae?
Mid-diaphysis of femur
Metaphysis of tibia
Cancellous bone of the vertebra
Posterior cortex of humerus
A surgeon uses bridge plating for a comminuted femur shaft fracture. What type of stability and healing is expected?
Absolute stability → direct healing without callus
Absolute stability → callus formation
Relative stability → indirect healing with callus
No stability → nonunion
In cancellous bone healing by creeping substitution, rapid healing occurs because:
Cartilage is converted directly into lamellar bone
Blood vessels grow into trabeculae providing immediate scaffolding
Cutting cones drill channels across the fracture
Micromotion is completely absent
The first step in systematic X-ray reading is:
Identifying the fracture
Checking patient name and date
Looking for displacement
Estimating bone density
Two joints must be included in long bone X-rays because:
They reduce radiation
They ensure immobilization
To avoid missing associated injuries
They improve soft tissue contrast
The densest material on an X-ray appears:
Black
Dark grey
Light grey
White
A simple oblique fracture is identified by:
Horizontal fracture line
Spiral pattern
Diagonal fracture line
Multiple fragments
When describing displacement, movement is described for the:
Proximal fragment
Distal fragment
Both fragments independently
Whichever fragment appears larger
In a femur AP X-ray, the lesser trochanter appears more prominent. This most commonly indicates:
Internal rotation
External rotation
Neutral rotation
Overexposure
A long bone fracture is visible on only one X-ray view. The MOST appropriate next step is:
Ignore the finding
Diagnose as simple fracture
Obtain an additional orthogonal view
Repeat the same view with more exposure
A fracture appears nondisplaced on an AP view, but displaced on the lateral view. This suggests displacement in the:
Coronal plane
Sagittal plane
Axial plane
Oblique plane
A wedge-shaped fragment with cortical disruption on one side most likely represents:
Spiral fracture
Wedge fracture
Butterfly comminution
Oblique fracture
When assessing angulation, the correct method is to evaluate:
Direction of apex of the fracture
Movement of soft tissues
Length shortening
Callus formation
