Summary
The effect of flexion of the hip joints on the anorectal angle has been discussed. It is concluded that the anorectal angle straightens out as the hip joints are flexed, while the anal canal is drawn open at the same time. This straightening effect, which is further increased by straining, results in lessening the resistance at the anorectal junction and increased ease of defecation. The hips-flexed position during defecation is recommended as part of the treatment of constipation and as a prophylaxis against hemorrhoids.
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References
Jackson, C. C. and E. Robertson: Etiologic aspects of hemorrhoidal disease. Dis. Colon & Rectum.8: 185, 1965.
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Phillips, S. F. and D. A. W. Edwards: Some aspects of anal continence and defecation. GUT.6: 396, 1965.
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Tagart, R.E.B. The anal canal and rectum. Dis Colon Rectum 9, 449–452 (1966). https://doi.org/10.1007/BF02617443
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DOI: https://doi.org/10.1007/BF02617443