The effects of flexion-distraction and drop techniques on disorders and Ferguson's angle in female patients with lumbar intervertebral disc herniation.
Hyunju Oh, Sangyong Lee, Kwansub Lee and 1 others
PMID 29706701WHAT IT FOUND
Both groups improved in disability scores and Ferguson's angle after eight weeks.
One group received flexion-distraction and drop, the other spinal decompression. Both also received hot pack, interferential current, and ultrasound. The groups were not compared directly, and no component's contribution was separated.
Key findings
01Both groups had statistically significant reductions in ODI and Ferguson's angle.
02In the experimental group, ODI was 42.2 ± 10.0% before and 21.9 ± 7.9% after; in the control group, it was 34.4 ± 14.6% before and 19.3 ± 8.9% after.
03The study tested changes within each group and did not compare the two groups directly.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only 30 women from one hospital, so it may not apply to men, other ages, or other settings. The paper does not describe how patients were allocated to groups, so baseline differences cannot be ruled out. The study only tested changes within each group; it did not compare the two treatments directly. Both groups received the same hot pack, interferential current, and ultrasound therapies, so the contribution of flexion-distraction, drop, or decompression alone cannot be separated. Therapists and patients were not blinded, although the radiographer measuring Ferguson's angle did not know patient symptoms. Follow-up was only for the eight-week treatment period, and daily activity was not controlled. Patients were limited to female L5-S1 herniation and a Ferguson angle of 30° or above, so results do not cover all lumbar disc herniation presentations.
Declared interests
The authors declare no conflict of interest.
The easy way to misread this
Do not conclude that flexion-distraction and drop therapy are better than spinal decompression. The paper only compared before and after changes within each group, not the two groups against each other, and both groups also received the same adjunct therapies, so the effect of any single component cannot be separated.