7. Sport and joints Flashcards Preview

LCRS Y2: Musculoskeletal > 7. Sport and joints > Flashcards

Flashcards in 7. Sport and joints Deck (15)
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1

Define "synovial joint"

Joint with capsule which is continuous with the periosteum containing synovial fluid

2

What is synovial effusion?

Rapid accumulation of neutrophil-rich synovial fluid in bacterial infection

3

Recall the arrangement of collagen in articular cartilage

At articular surface: parallel
In midzone: criss-crossed
At bone: orthogonal

4

Where does bone growth originate?

Epiphysis

5

When does growth end?

When epiphysis fuses to diaphysis

6

Recall Volkmann's law

Compression forces inhibit growth
Tensile forces stimulate growth

7

Describe the alignment if your knees are outside the line between your hips and your feet

Varus

8

Describe the alignment if your knees are inside the line between your hips and your feet

Valgus

9

How can joint shape be altered surgically?

Osteotomy - wedge inserted

10

What does Wolff's law describe?

Transformation of bone

11

Recall Wolff's law

o Bone remodels according to the stresses applied to it

12

Give an example of an application of Wolff's law

Surfers law down more bone on the dorsum of their foot due to misloading

13

Describe the differences in the body's adaptation to increasing sporting activity as a child vs as an adult

As a child = adapt well, build more bone
As an adult you might build bone mass but it is less likely to be in the right place to be mechanically efficient

14

What does DDH stand for? Describe its pathophysiology

Developmental dysplasia of the hip
Malformation of acetabulum in utero causinf femoral head to malform

15

Recall one innocuous yet significant risk factor for osteoarthritis development

Meniscal injury