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Manual traction versus isometric exercises in patients with herniated intervertebral lumbar discs
Ljunggren AE, Walker L, Weber H, Amundsen T
Physiotherapy Theory and Practice 1992;8(4):207-213
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

Fifty patients with lumbago-sciatica due to a proven herniated intervertebral lumbar disc were randomised between two treatment groups: manual traction and careful isometric exercises. Treatment was given daily over a period of 5 to 7 days. A blind overall assessment subsequent to treatment showed that in both groups approximately 40% of the patients had improved, corresponding to that which could be expected from placebo. The effect of both manual traction and isometric exercises is doubtful in patients with lumbago-sciatica and herniated lumbar discs. In further research, discriminant analysis is recommended to elucidate what characterises responders and non-responders to lumbar traction.

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