There is probably no subject in medical literature which has given rise to such extreme divergence of opinion as the relative importance of abnormal renal mobility as an etiologic factor in the production of lumbar, abdominal and pelvic pain.
In more recent years, the association of faulty ureteral or renal pelvic drainage with the persistence or recurrence of renal infection, the formation of calculi and the development of hydronephrosis has furnished additional study and controversy among those most interested in these subjects.
With the marked improvement in modern methods of urologic diagnosis, notably the procedure of clearly outlining the ureter and renal pelvis with opaque material in the roentgenogram, it might seem that sufficiently accurate data could be obtained to decide whether or not, in a carefully studied patient, abnormal renal mobility actually resulted in distressing or damaging sequelae.
On the contrary, additional information of obstructive processes in and about