KIN242 Lecture Notes - Lecture 2: Hip, Lumbar Vertebrae, Lateral Condyle Of Tibia
13 Mar 2017
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Insufficient mobility in sacral region to arch their low back more and arch their back. In humans we have lumbar curve which no other animal has: this allows us to keep weight centered through lower limb and weight bear and look forward in an efficient manner. Evolution of the femur: bipedal balance: need to balance on a single leg, enabled by, 1. Legs near centre (birds: balancing on one leg is needed. Increased valgus angle with the knee to adjust bos under com. Progression (this is key in being successful: need mobility at base of support in order to move (cid:523)(cid:498)fall(cid:499)(cid:524) forward and forefoot, achieved by rocking over heel, ankle, need, 1. Control of rate of mobility (how quickly you fall forward: 2. Efficient (though energy conservation: efficiency = work done/energy expended, trade off between optimizing functions (progression, stability, shock absorption) and minimizing energy costs, two mechanisms to minimize energy, minimize (unnecessary) movement of com, pendulum (straight leg) gait:
