an orthopedic device 10 in accordance with the present invention is shown in fig1 as it is positioned on a human body to support the lumbosacral region consisting of the five lumbar vertebrae and the sacrum . specifically , device 10 in the embodiment shown is a belt or brace or support which is comprised of a trapezoidal back panel 12 and first and second side panels 14 and 16 . spinous stays 18 are support members attached to back panel 12 . additional support members in the form of lateral stays 20 are positioned as seen in fig1 or 2 at the side edges of back panel 12 . fig2 shows device 10 opened flat with the top edge 22 corresponding to the portion which is adjacent to the wearer &# 39 ; s waist and the bottom edge 24 corresponding to the portion which is adjacent to the wearer &# 39 ; s hips . spinous members or stays 18 are shown as oriented parallel to the vertical midline 26 of back panel 12 . spinous stays 18 are displaced from vertical midline 26 by a distance sufficient to place them closely adjacent to the spine but not in contact with it when the device is worn by the wearer as shown in fig1 . stays 18 are placed 1 . 25 inches on center from the midpoint of device 12 . in the preferred embodiment shown , the gap between the inside edges of the spinous stays is approximately 1 . 5 inches . although most of the measurements of devices 10 may vary considerably in the various size configurations of the series of orthopedic devices , the separation of the spinous stays remains at the same distance throughout the series of varying size belts because the distance necessary to keep the stays from directly contacting the spine is essentially the same over the entire range in sizes . in the embodiments shown herein back panel 12 is formed of a suitable stretchable fabric such as 100 % stretch elastic or a stretchable spandex material . side panels 14 and 16 are made from loop fabrics while fastening means or hook material 28 is attached on the outside of left side panel 14 so that device 12 is closed by pulling right side panel 16 over left side panel 14 so that hook material 28 engages the loops on the outside surface of left side panel 14 . the loop material of side panels 14 and 16 and hook material 28 may be of any type well known in the industry which would form a hook type fastener such as velcro ( registered trademark ) brand . the loop materials are relatively non - stretchable . in order to provide an adjustable additional tension on the supported portion of the back , adjustable support straps 30 are provided . one end of support straps 30 is anchored adjacent to spinous stays 18 while the other end is connected to a velcro hook closure 32 which has the operable side facing side panels 14 or 24 for engagement therewith at selected locations in accordance with wearer preference and comfort . in the preferred embodiment shown , support strap hook closures 32 are 3 . 5 inches in length with 2 . 75 inches thereof overlapping side panels 14 and 16 as a guard against peeling . closures 32 are centered on the ends of elastic panels 14 and 16 . as shown in fig2 there are two support straps on each side of the centerline of device 10 . the total span of support straps 30 is proportionately varied for the various supports in the inventory of supports necessary to fit an optimal percentage of the wearer population . in accordance with the present invention , the total length of the unstretched support straps 32 is approximately 0 . 45 times the total length l total of device 10 . in accordance with the present invention it can be seen that a series of belts may be manufactured in varying sizes using the dimensional relationships outlined above . for example a series of belts might include the six sizes listed on the graphs of fig3 and 4 . it has been determined that belts manufactured in the sizes indicated will be suitable for a very high percentage of the potential wearer population . in order to fit a potential wearer to a belt in a series of belts manufactured in accordance with the present invention , the waist and hip circumference of the wearer would be measured and the hip to waist differential would be calculated . the suitable belt would be determined by selecting a belt within the series having a hip to waist differential closest to the measured hip to waist differential . since the hip to waist differential determines the length of the belt , the height and the length of the support straps , there is no need to provide multiple belts in each waist size with varying belt widths as has been previously necessary using conventional belt fitting and sizing methods . although the present invention has been described in terms of the presently preferred embodiment , it is to be understood that such disclosure is not to be interpreted as limiting . various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above disclosure . accordingly , it is intended that the appended claims be interpreted as covering all alterations and modifications as fall within the true spirit and scope of the invention .
a lumbosacral support belt , a series of lumbosacral support belts , and a method of fitting lumbosacral support belts which are manufactured with specific relationships of certain dimensions so that a minimum inventory of belts fits a large percentage of the wearer population . in particular the hip to waist differential and the total waist measurement determine the height of the belt , the dimensions of the back panel and the length of the adjustable support straps .