fig1 shows a human spinal column , also called the spine , or backbone . the spine is a flexible column extending from neck to pelvis , made of a series of bones , called the vertebrae . the major function of the spine is protection of the spinal cord . it also provides stiffening for the body and attachment for the pectoral and pelvic girdles and many muscles . in humans , an additional function is to transmit body weight during walking and standing . in humans ( and other mammals ), the spine includes four main regions : ( 1 ) the cervical , in the neck , with articulates with the head ; ( 2 ) the thoracic , in the chest , which articulates with the ribs ; ( 3 ) the lumbar , in the lower back , which articulates with bending and stretching ; and ( 4 ) the sacrum , which articulates with the pelvic girdle at the sacroiliac joint . as shown in fig1 , humans have 7 cervical vertebrae ( numbered c1 to c7 ), 12 thoracic vertebrae ( numbered t - 1 to t - 12 ), five 5 lumbar vertebrae ( numbered l - 1 to l - 5 ), and 5 fused sacral vertebrae . as shown in fig2 , when an individual bends backward , the spine is said to be in “ extension .” when an individual bends forward , the spine is said to be in “ flexion .” depending on the source of the back pain , back pain can occur during extension , or during flexion , or during both . fig3 a to 3e and 4 a to 4 c show a garment 10 that embodies features of the invention . the garment 10 is made of durable fabric , rubber , or synthetic material ( e . g ., canvas or wet suit material ) and is sized and configured to be worn by an individual . the material of the garment 10 is substantially transparent to the imaging energy ; that is , it does not substantially interfere with the diagnostic imaging . as shown in fig3 a , the garment 10 includes a vest region 12 , with arm and neck openings 14 and 16 , so that the vest region 12 can be comfortable worn on the upper torso , as fig4 a and 4b show . as shown in fig3 a , the garment 10 also desirably includes a pantaloon region 18 , with leg openings 20 , so that the pantaloon region 18 can be worn about the waist and hips like trousers , as fig4 a and 4b show . in an alternative embodiment , the garment 10 can include only a vest region 12 , with no pantaloon region 18 . in the illustrated embodiment , see fig3 b , 3 c , and 4 c , the vest region 12 includes overlapping left and right flaps 22 and 24 that open to allow a person to put the vest region 12 and pantaloon region 18 on . the left and right flaps 22 and 24 close in an overlapping condition ( shown in fig3 a ) to secure the vest region 12 on the upper torso and the pantaloon region 18 on the hips and waist ( see fig4 a and 4b show ). a closure mechanism 26 is carried by one or both of the flaps 22 and 24 to releasably hold the flaps 22 and 24 in a closed condition . the closure mechanism 26 can comprise , e . g ., velcro ® material , plastic buttons , plastic hooks , or plastic snaps , made of materials which do not interfere with the imaging . as shown in fig4 c , a disposable or nondisposable ( but washable ) inner garment 28 can be provided . the inner garment 28 keeps the main outer garment 10 from coming into direct contact with the skin of a patient , so the outer garment 10 can be used by multiple patients undergoing imaging . like the garment 10 itself , the inner garment 28 is substantially transparent to the imaging energy so that it does not substantially interfere with the diagnostic imaging . as shown in fig3 c , the garment 10 includes a series of expandable segments 30 . the expandable segments 30 are precisely positioned to align , when the garment 10 is worn , with groups of vertebrae or individual vertebrae along the thoracic , lumbar , and sacral regions of the spine , as well as with pelvic bones affecting the sacroiliac joint , as fig6 shows . the expandable segments 30 are made from material that assumes a normal lay - flat condition , as fig5 shows , but can be enlarged or expanded into an enlarged condition that preferentially presses against the adjoining vertebrae . the material of the garment 10 is less flexible that the material of the expandable segments 30 , so that , during enlargement , the expandable segments 30 expand preferentially inward into the interior of the garment 10 . by pressing against the vertebrae , the expandable segments preferentially move alter the position of the vertebrae , muscles , and nerves to simulate extension and / or flexion and / or other orientation of the spine and pelvic region while the patient otherwise lays supine for imaging , as fig5 and 7 show . the expandable segments 30 are made from a material that is substantially transparent to the imaging energy , so that it does not substantially interfere with the diagnostic imaging . to affect preferential enlargement the expandable segments 30 , the garment 10 further includes an array of actuators 32 that form or are otherwise carried within the expandable segments 30 . the actuators 32 comprise structures that can be controllably enlarged , either by conveyance of liquid or air ( either of which can be called a “ fluid ”) or by mechanical means , from a normal collapsed condition to an enlarged , expanded condition . it is by operation of the actuators 30 that the expandable segments 30 enlarge to preferentially press against adjacent vertebrae or pelvic bone of the individual wearing the garment 10 , moving and orientating vertebrae , muscles , and nerves of the spine . the actuators 32 are made from a material or materials that is / are substantially transparent to the imaging energy , so that the actuators 32 do not substantially interfere with the diagnostic imaging . while the individual wearing the garment 10 lays supine to undergo imaging ( as fig5 , 6 , and 7 show ), the actuators 32 are operated to apply coordinated external pressure to the vertebrae in regions of the spine . operation of the actuators 32 affects predictable movements of the spine in desired directions , while imaging occurs , with the objective to cause an incident of back pain that can be coordinated with spine orientation and thereby lead to a diagnosis of the source of the back pain . that is , the incident of back pain can be correlated to an orientation of the spine that is captured by the imaging at the time the pain occurs . in this way , the orientation and motion of the spine that causes back pain can be systematically simulated and examined , to identify the particular bone or bones which are being moved to cause the back pain . the size and configuration of the expandable segments 30 can vary . in a representative embodiment shown in fig3 c , a single , axially elongated expandable segment for the substantially the entire thoracic region is shown , e . g ., extending generally from t1 to t11 and measuring , e . g ., about 5 to 8 inches wide transverse the axis of the spine and about 20 inches +/− 5 inches axially along the axis of the spine . also , in the representative embodiment shown fig3 c , there are a plurality of individual expandable segments 30 in the lumbar region , e . g ., extending generally from t12 to t5 and each expandable segment 30 measuring , e . g ., about 5 to 8 inches wide transverse the axis of the spine and about 1 to 2 inches along the axis of the spine . in the representative embodiment shown fig3 c , there is a single expandable segment for substantially the entire sacral region , measuring about half the size of the expandable segment in the thoracic region . in fig3 c , there are also expandable segments 30 carried on the front of the garment 10 , in the pantaloon region 18 , that register over opposite lateral sides of the anterior superior iliac spine ( asis ) to affect bone movement along the sacroiliac joint . this is also shown in fig1 . fig3 d and 3e show alternative different illustrative configurations . in fig3 d , there are two expandable segments 30 in the thoracic region . in fig3 e , there are separate expandable segments 30 for each vertebra in the thoracic and lumbar regions . the actuators 32 also may take various forms and configuration , depending upon the size and configuration of the expandable segments 30 . in the illustrated embodiment of fig3 c , 3 d , and 3 e , the actuators take the form of inflatable bodies that form or are carried within the expandable segments 30 . the expandable bodies can comprise , e . g ., balloons made from elastic , non - elastic , or semi - elastic materials . tubing 40 individually couples each expandable body to a source of expansion air or ( desirably ) liquid ( see fig5 ) that does not degrade the actuator or interfere with imaging , so that each expandable body can be selectively enlarged or collapsed in a controlled manner by the caregiver , as desired , see fig6 and 7 show . alternatively , as shown in fig1 , the actuators 32 can take the form of mechanical jack type lifters or small elevators 34 that are carried within the expandable segments 30 . the mechanical actuators 34 can selectively and individually be operated to achieve the desired results , as just described . in an alternative embodiment ( see fig1 ), the actuators 32 can be sized and configured to enlarge more on one lateral side ( left or right ) of a vertebral level than another . for example , the balloons 30 at one or more vertebral levels can be formed to preferentially expand more on one lateral side than other , e . g ., by the inclusion of individual right and left lateral size chambers 40 and 42 separated by a septum 44 . the chambers 40 and 42 are coupled to individual inflation tubing . inflation of only a right side chamber 40 ( and not the left side chamber 42 )— or vice versa — press against only the affected side of the adjacent vertebrae of the individual wearing the garment 10 . thus , more precise and preferential ranges of movement can be provided to lead to greater degrees diagnostic accuracy . for example , as shown in fig5 and 6 , the individual wearing the garment 10 lays supine on an imaging table 36 in an imaging field 38 . once the individual is positioned for imaging , expandable segments of the garment can be systematically and preferentially enlarged to affect movement of adjacent vertebra . in fig7 , all of the expandable segments 30 in the thoracic , lumbar , and sacral regions are enlarged for the purpose of illustration . however , selective groups of some expandable segments 30 can be enlarged , without enlarging other selective groups of the expandable segments 30 . for example , in fig8 , only the expandable segments 30 for the thoracic and sacral regions are selectively enlarged ( the expandable segments 30 in the lumbar region not being enlarged ), to determine what effect simulated flexion may have on back pain and the spine . or , as shown in fig9 , only the expandable segments 30 in the lumbar region can be selectively enlarged ( the expandable segments 30 for the thoracic and sacral regions not being enlarged ), to determine what effect extension may have on back pain and the spine . to test the sacroiliac joint ( as fig1 and 11 show ), both expandable segments 30 on the asis can be enlarged , along with the expandable segment for the sacral region ( if desired ), to stress the sacroiliac joint from two directions . once an incident of back pain is generated , the incident of pain can be correlated to the orientation of the spine that is captured by the imaging at the time the pain occurs . in this way , the orientation and motion of the spine that causes back pain can be systematically simulated and examined , to identify which movement of particular bone or bones , or which orientation of the spine , causes the back pain . the garment 10 can also be used as a diagnostic tool in and of itself , without the use of imaging . for example , by enlarging both expandable segments 30 on the asis along with the expandable segment 30 for the sacral region , the sacroiliac joint can be stressed from two directions . if the sacroiliac joint is a pain generator when stressed in this manner , this alone can serve as a diagnosis of dysfunction at the sacroiliac joint . other embodiments and uses of the inventions described herein will be apparent to those skilled in the art from consideration of the specification and practice of the inventions disclosed . all documents referenced herein are specifically and entirely incorporated by reference . the specification should be considered exemplary only with the true scope and spirit of the invention indicated by the following claims . as will be easily understood by those of ordinary skill in the art , variations and modifications of each of the disclosed embodiments can be easily made within the scope of this invention as defined by the following claims .
systems , devices , and methods for diagnosing and treating conditions of the spine employ a garment for selectively positioning vertebrae of a spine of a supine individual , e . g ., during diagnostic imaging of the spine . the garment affects movement of vertebrae that can be diagnostically correlated with incidents of back pain .