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Lumbar mobility in asymptomatic individuals.

K Tallroth¹, H Alaranta, A Soukka

¹Department of Radiology, Orthopaedic Hospital of the Invalid Foundation, Helsinki, Finland.

Journal of Spinal Disorders

|December 1, 1992

Summary

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This study assessed lumbar mobility and scoliosis in pain-free adults. Findings suggest common ranges for spinal motion and scoliosis that may not indicate pathology, aiding clinical interpretation.

Area of Science:

Radiology
Orthopedics
Biomechanics

Background:

Assessing lumbar mobility and scoliosis is crucial for diagnosing low-back pain.
Objective interpretation of functional radiographs can be challenging.

Purpose of the Study:

To radiologically evaluate angulatory and translational lumbar mobility and scoliosis in individuals without a history of back pain.
To establish baseline data for interpreting spinal mobility and alignment in clinical settings.

Main Methods:

Radiological study involving 56 participants aged 35-54 years with no history of back pain.
Lumbar mobility measured using extension-flexion views.
Lumbar scoliosis assessed via radiographs taken in the standing position.

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Main Results:

The L5-S1 segment exhibited the largest range of angulatory motion (mean 17.3° in women, 16.4° in men).
Translational motion of 5 mm in L3-L4 and L4-L5, and 4 mm in L5-S1, was common and potentially not pathological.
18% of subjects showed scoliosis of ≥10 degrees.

Conclusions:

Established ranges for lumbar mobility and common findings of scoliosis in a pain-free population.
Results contribute to a more objective interpretation of functional radiographs for low-back pain patients.