L8.2 Engineering for musculoskeletal system

Question 1

What is the video motion analysis for?

Answer 1

understand joint kinematics

Question 2

Problems associated with video motion analysis?

Answer 2

• Skin motion artifact (marker moving on skin)
• Could put marker on bone invasively
• Or use X-ray fluoroscopy

Question 3

What is the rotator cuff tear arthroplasty?

Answer 3

• Rotator cuff tear + osteoarthritis
• Fix:
  
  • Reverse total shoulder arthroplasty → changes joint center of rotation → changes leverage