Three articles on PainSci cite Rohlmann 1999: 1. Complete Guide to Low Back Pain 2. Don’t Worry About Lifting Technique 3. Spinal Fracture Bracing
PainSci commentary on Rohlmann 1999: ?This page is one of thousands in the PainScience.com bibliography. It is not a general article: it is focused on a single scientific paper, and it may provide only just enough context for the summary to make sense. Links to other papers and more general information are provided wherever possible.
To determine how much a back brace really braces, German researchers used “telemeterized” implants — steel fixation rods with meters on them! so cyborgy! — to measure the effect of common braces on spinal forces. This is a good experiment. If you have implants stabilizing your spine internally, measuring the stresses on them directly is a pretty clever way of checking to see if an external brace is doing anything.
Three types of braces were examined: Boston overlap brace, reclination brace, and a lumbotrain harness. Unsurprisingly, they found that “none of the braces studied were able to markedly reduce the loads” on the implants. There was some reduction — just not “marked,” nothing to write home about.
More surprisingly, some of their measurements showed that bracing increased loading on the implants! That does seem possible. The spine is an extraordinarily dynamic structure. Somewhat like slouching into a comfortable chair, a brace may actually cause some sloppiness of spinal function, resulting in “resting” on the fixations, rather than using muscle to support and control the spine. That’s just a guess, but it seems like a reasonable one to me.
~ Paul Ingraham
original abstract †Abstracts here may not perfectly match originals, for a variety of technical and practical reasons. Some abstacts are truncated for my purposes here, if they are particularly long-winded and unhelpful. I occasionally add clarifying notes. And I make some minor corrections.
OBJECTIVE: To determine the effect of a brace or harness on loads on internal spinal fixation devices.
DESIGN: The implant loads were measured in vivo using telemeterized internal spinal fixators.
BACKGROUND: Only limited information exists regarding the load reduction due to a brace or harness.
METHODS: A Boston overlap brace, a reclination brace, and a lumbotrain harness were examined to determine how they affect the loads on internal spinal fixation devices. The implant loads were measured using telemeterized fixators in six patients for several positions and activities, including sitting, standing, walking, bending forward, and lifting an extended leg in a supine position.
RESULTS: None of the braces studied were able to markedly reduce the loads on the fixators. Frequently even higher fixator loads were measured when wearing a brace or harness.
CONCLUSIONS: It does not seem helpful to brace patients after mono- or bisegmental stabilization of the lumbar spine.
This page is part of the PainScience BIBLIOGRAPHY, which contains plain language summaries of thousands of scientific papers & others sources. It’s like a highly specialized blog. A few highlights:
- Is Neck Posture Subgroup in Late Adolescence a Risk Factor for Persistent Neck Pain in Young Adults? A Prospective Study. Richards 2021 Phys Ther.
- Photobiomodulation therapy is not better than placebo in patients with chronic nonspecific low back pain: a randomised placebo-controlled trial. Guimarães 2021 Pain.
- No effect of creatine monohydrate supplementation on inflammatory and cartilage degradation biomarkers in individuals with knee osteoarthritis. Cornish 2018 Nutr Res.
- The CANBACK trial: a randomised, controlled clinical trial of oral cannabidiol for people presenting to the emergency department with acute low back pain. Bebee 2021 Med J Aust.
- Relationships Between Sleep Quality and Pain-Related Factors for People with Chronic Low Back Pain: Tests of Reciprocal and Time of Day Effects. Gerhart 2017 Ann Behav Med.