Principles Flashcards

1
Q

What is Wolff’s law?

A
  • The skeleton is an adaptable mechanical structure.
  • Its internal + external morphology adapts throughout life
  • According to stress it is subjected too.
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2
Q

What causes an external bony feature?

A
  • Attachment of a ligamentous, tendinous or capsular structure.
  • The union of 2 bony parts at an articulation.
  • To transmit other structures (nerve, artery or vein)
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3
Q

What is a close-packed position?

A
  • Ligaments are under tension.
  • Joint is stable.
  • Articular surfaces are maximally compressed together.
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4
Q

What is a “normal origin” and a “reversed origin”?

A

Normal origin - The proximal segment is stabilised and the distal segment moves.

Reverse origin - The distal segment is stabilised and the proximal segment moves.

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5
Q

What is an enthesis?

A

A connection of a tendon, ligament or joint capsule to a bone.

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6
Q

What is the structure of an enthesis?

A
  • Connective tissue.
  • Fibrocartilage.
  • Mineralised fibrocartilage.
  • Bone.
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7
Q

What are the 2 main causes of the difference between male and female pelves?

A
  1. Robustness - the size of bony attachment sites + joint surfaces.
  2. Requirements for childbirth.
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8
Q

What are the 3 walls of muscle that surround the abdominopelvic cavity?

A
  1. Thoracic diaphragm.
  2. Pelvic diaphragm.
  3. Abdominal wall muscles.
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