Why Does My Lower Back Throb After Lifting a Heavy Box From the Floor?
1. Introduction Throbbing lower back pain after lifting a heavy object usually indicates an acute lumbar muscle strain or a sprain of the supporting ligaments. Lifting a load from the floor with a flexed spine places immense shear force on the erector spinae muscles and the intervertebral discs, leading to microscopic tissue tearing. The body … Read more