Term
| What causes more lumbar pressure: sitting or standing? Why? |
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Definition
| Sitting, because of the increased lumbar flexion. |
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Term
| Which position puts the least amount of stress on the Lspine? |
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Definition
| Lying supine. (pg L-15 of handouts) |
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Term
| What happens to disc pressure as a person moves incrementally from sitting to supine, say, on a reclining table? |
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Definition
| The further they recline, the more horizontal force can be vectored out, which means there is less vertical (or compressive) force on the disc. So the more you recline, the less force there is compressing the disc. (pg L-16 of handouts for image) |
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Term
| Why, in terms of physics, does sitting slouched create more force on the Lspine than sitting up tall? |
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Definition
| Sitting with a slouch creates a longer lever arm from the hip joint to the lumbar spine which increases force. When sitting up straight or standing, that lever arm is decreased, decreasing force on the spine. (see pg L16 for picture) |
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Term
| What happens to the back muscles when the posterior longitudinal ligament is put on a stretch? |
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Definition
| The muscles get turned off, and you rest on the ligaments. |
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Term
| What is the order of back muscle, pelvic muscle and ligament work during extension from a forward flexed position? |
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Definition
| Ligaments, and pelvic muscles, then back muscles in the final phase of extension. (see pg L18 for picture) |
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Term
| You want to have your pt do back ext. exercises by lying prone and lifting arms and legs at the same time. How can you get the exercise you want without stressing their back? |
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Definition
| Place pillows under their belly so that their back starts in slight flexion. Have them extend just to neutral, then you’re working the muscles you want without increasing the intervertebral force |
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Term
| How can you decrease LB stress while performing a crunch? |
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Definition
| Put lower legs up on a chair to put hips at 90 degrees of flexion or a little more, instead of having feet on the ground with hips at 60 degrees of flexion. It decreases the lever arm, decreasing force on the low back, and decreasing the tendency to use gluts while performing the exercise. |
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Term
| How can you exercise the R multifidi? |
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Definition
| Side bend to the R or rotate to the L. (pg L20) |
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Term
| How can you exercise B multifidi? |
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Definition
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Term
| If a pt with LB pain reports that coughing or sneezing increases their pain, what do you think the origin of their problem is? How does the cough or sneeze cause incr. pain? |
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Definition
| Origin: something pressing on the n. root, usually the disc. How: Increased intrathecal pressure --> increased pressure on whatever is pressing on the n. root --> incr. n. root irritation |
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Term
| If sitting causes more pain than standing, what structure do you think is most likely causing the problem? |
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Definition
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