Estimating Load on the Spine Using Spinal Shrinkage

Changes in body height have been used as a measure of spine compression during loading. However, a gap exists in the literature as to the actual relationship that exists between spinal shrinkage and spine load as a result of load carrying or lifting. This study proposed a mathematical model for the relationship between spinal shrinkage and spinal load. The model was validated using some load carriers in a major market in Ibadan, Oyo State, Nigeria. The spinal shrinkages obtained from the study did not differ significantly from those calculated using the proposed model, thus suggesting that the model may be valid. The model established a relationship between load on the spine, spinal shrinkage, spine length and chest area.