Comparison Between a State-of-the-Art Mechanical 3D Scoliosis Correction Protocol and the Schroth Exercise on Spinal Flexibility of Patients With Adolescent Idiopathic Scoliosis: A Randomized Controlled Trial.
Yi Jie, Mengyao Li, Anqin Dong and 7 others
PMID 40463776WHAT IT FOUND
One session of mechanical 3D correction increased body height but did not beat Schroth exercises for spinal flexibility.
Both groups improved forward bending and rotation after treatment. Lateral bending improved only with the machine. The height gain likely reflects spinal unloading while lying down, not permanent correction.
Key findings
01There was no significant difference between the groups in the change in spinal flexibility, the primary outcome.
02The mechanical correction group showed a significantly larger increase in body height compared to the exercise group.
03Both groups significantly improved in forward bending and trunk rotation, but only the mechanical group improved lateral bending.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
This was a small pilot study with only 40 participants, limiting statistical power. Only one session was tested, so long-term effects are unknown. The mechanical group lay supine (unloaded spine) while the exercise group was upright, making the body height difference difficult to interpret as a treatment effect. The flexibility tests used were nonspecific and could not rule out movement from joints other than the spine. The study did not account for skeletal maturity, which is a key factor in scoliosis progression.
Declared interests
The authors declared no conflicts of interest.
The easy way to misread this
Do not interpret the 1.0 cm increase in body height as evidence of spinal correction. The authors note this may simply result from the patient lying in a supine, unloaded position for 30 minutes, and the primary outcome of flexibility showed no significant difference between the two treatments.