What is the weight distribution through the various joints from the ankle through the metatarsal heads in unilateral stance?
What will be an ideal response?
ANS:
As the body weight comes down the tibia, all the weight passes from the tibia to the body of the talus. From there, half of the weight moves posteriorly to the calcaneus and half moves anteriorly to the forefoot. Of the weight passing to the forefoot, two thirds pass through the talonavicular joint and one third through the calcaneocuboid joint. As the weight arrives at the heads of the metatarsals, the first metatarsal bears twice as much weight as the other four toes (which bear equivalent amounts to each other).
You might also like to view...
How does an incident involving large numbers of contaminated victims differ from other mass-casualty incidents?
a. quarantine of victims in the contaminated area may be necessary b. rescue of victims is delayed until the area is cleared of secondary devices c. triage may be moved into the hot zone d. primary victim decontamination may be moved to healthcare facilities
Compact bone is created over the surface of spongy bone by ________
A) osteoprogenitors B) osteoblasts C) osteoclasts D) osteons