| SEGMENTAL MOBILITY ASSESSMENT | |
| ICF category | Measurement of impairment of body function – mobility of joint functions, specified as mobility in a vertebral segment |
| Description | With the patient prone, lower thoracic and lumbar spine segmental movement and pain response are assessed |
| Measurement method | The patient is positioned in prone. The examiner contacts each lower thoracic and lumbar spinous process with the thumbs. The examiner should be directly over the contact area keeping elbows extended, utilizing the upper trunk to impart a posterior to anterior force in a progressive oscillatory fashion over the spinous process. This is repeated for each lower thoracic and lumbar segment. The pressures can be also be directed lateral to the spinous process, in the region of the zygapophyseal joints, multifidi muscles, or transverse processes. The examiner can also change his/her contact position and places the hypothenar eminence (just distal to the pisiform) of one hand over the spinous process of each lower thoracic or lumbar spinous process and repeat the same posterior to anterior forces in a progressive oscillatory fashion. The mobility of the segment is judged to be normal, hypermobile, or hypomobile. Interpretation of mobility is based on the examiner’s perception of the mobility at each spinal segment relative to those above and below the tested segment, and based on the examiner’s experience and perception of normal mobility. |
| Nature of variable | Categorical with various grades depending on the study |
| Units of measurement | Ordered or categorical |
| Measurement properties | Measures for determining mobility reported low reliability for ordered scales with intraclass correlation coefficients (ICC) of 0.25 in patient studies25 and kappas show poor to minimal agreement (k= −0.2 to 0.26).146 |
| Instrument variations | Segmental motion is also be tested with the subject in sidelying, facing clinician with hips and knees flexed and the clinician grasping the knee and flexing and extending, rotating, and laterally flexing the hip, pelvis and lumbar spine while palpating intersegmental motion. |