The delivery beds in common use in this country have one or more of the following distinct shortcomings:
The legs of the patient in labor must be held by attendants. This is a drain on the nursing force, which is none too ample in any hospital, and seriously cripples the nursing service at night. Moreover, nurses who act as human leg holders are unable to watch the process of labor and thus miss at least one important part of their training. If the second and third stages are at all prolonged, the actual physical effort is not inconsiderable.
Mechanical leg holders, on the other hand, are by no means satisfactory. Of the various types in use, the straight leg holder, in which the foot of the patient is secured in a vertical elevation, imposes a noticeable strain on the sacroiliac ligaments, leaves the patient with backache for some days after
Gellhorn G. A NEW DELIVERY BED. JAMA. 1925;85(15):1134-1135. doi:10.1001/jama.1925.26710150001011a