Changes and measurement of height and angle in the lumbosacral region.
A lumbosacral trapezium can be constructed using the parallels to the lower plate L4 and the upper plate S1 and two perpendiculars to the former; it yields exact measurement data for changes in height and curvature in the lower lumbar motion segments. The clinically relevant reductions in height in the dorsal part of the segments L4-5 and L5-S1, the increase in lumbar lordosis, and therapeutic straightening by means of conservative or operative treatment can thus be plotted exactly.
D006801:Humans; D008141:Lordosis / Q000473:pathology* / Q000503:physiopathology; D008159:Lumbar Vertebrae / Q000473:pathology; D008161:Lumbosacral Region / Q000473:pathology* / Q000503:physiopathology; D012447:Sacrum / Q000473:pathology