Knee Biomechanics
A basic science examiner asks you to describe the structure and function of the knee meniscus. They show you a diagram of the meniscus in cross-section highlighting the circumferential collagen fiber arrangement and the vascular zones. They note that the patient in question underwent total medial meniscectomy 15 years ago and now has medial compartment osteoarthritis. Regarding meniscus structure and function:
Mark each as TRUE or FALSE
The meniscus is predominantly composed of Type I collagen arranged circumferentially with radial tie...
The meniscus transmits 50-70% of compressive load in knee extension and 85% in flexion; total menisc...
The entire meniscus is vascular throughout life; Type III collagen is the predominant type; the late...
Meniscal vascular zones determine healing potential: red-red zone (peripheral 0-3mm) has 90% healing...
Meniscal extrusion greater than 3mm is biomechanically equivalent to meniscectomy as hoop stress fun...
Answer the questions to see explanations
Click T (True) or F (False) for each option