In this article, you can check How To Do Thomas Test And Its Benefits. it also is known for flexibility and muscle-length testing. During the initial assessments of posture and movement, you may opt to asses the flexibility of specific muscle groups that he or she suspects demonstrate tightness or limitations to movement. illustrate normal ranges of motion for healthy adults at each major point, specific muscle groups that frequently demonstrate tightness or limitations to movements are discussed in section. in addition, Table presents the average range of motion at various joint for healthy adults.
Thomas Test And Its Benefits
Thomas test is used for check the hip flexion and lengthening the quadriceps, and also asses the length of the hamstring.
To asses the length of the muscles involved in hip flexion. this test can actually asses the length of the primary hip flexors.
- hip flexors or iliopsoas
- rectus femoris (one of the four quadriceps muscle)
This test should not be conducted on those people who suffer from low-back pain unless cleared by their physician.
Equipment- for this test you may need only one equipment and you can do it at home.
- stable table
- gave the nature of the movement associated with this test, you may want to consider draping a towel over the person’s groin area.
- Explain the objective of the test and allow a warm-up.
- instruct the person to sit at the end of the table with the mid-thigh aligned with the table edge. place one hand behind the client back and the other under his or her thigh.
- while supporting the client, instruct him or her to flex one thigh toward the chest and gradually assist as he or she rolls to the table top with back and shoulder flat.
- instruct the person to continue to pull one knee toward the chest only until the low back is flat.
- Observe whether the back of the lowered thigh touches the table(hip positioned in 10 degrees of extension)
- observe whether the knee of the lowered leg achieves 80 degrees of flexion.
- observe whether the knee remains aligned straight or falls into an internal or external rotation.
- Use the information provided in the table to determine the location and identity of the thigh or limiting muscles.
Interpretation of the Thomas test
|Movement/Limitations||suspected muscle tightness|
|with the back and sacrum flat, the back of the lowered thigh does not touch the table and the knee does not flex to 80 degrees.||primary hip flexor muscle|
|with the back and sacrum flat, the back of the lowered thigh does not touch the table and the knee does not flex to 80 degrees.||The iliopsoas, which is preventing the hip from rotating posteriorly and inhibiting the thigh from being able to touch the table.|
|with the back and sacrum flat, the back of the lowered thigh does not touch the table and the knee does not flex to 80 degrees.||The rectus femoris, which does not allow the knee to bend.|
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Passive state-leg(PSL) Raise
it is used for to asses the length of the hamstrings. you need only one equipment for this test and you may also do this test at home.
- stable table or exercise mat
- explain to the person of the test and allow a warm-up.
- instruct the client to lie supine on a mat or table with the leg extended and the low back and sacrum flat against the surface.
- place one hand under the calf of the leg that will be raised while instructing the client to keep the opposite leg extended on the mat or table. Restrain the leg from moving or rising during the test.
- slide the other hand under the lumbar spine into the space between the person’s back and the mat or table
- advice the person to gently plantarflex his or her ankle to the point the toes away from the body. the position avoids a test limitation due to a tight gastrocnemius muscle(which would limit extension with the ankle in dorsiflexion). Additionally, a straight-leg raise with dorsiflexion may increase tension within the static nerve and create some discomfort.
- slowly raise the one leg, asking the person to keep that knee loosely extended through the movement.
- continue to raise the leg until firm pressure can be felt from the low back pressing down against the hand.
- This indicates an end-range of motion of the hamstrings with movement now occurring as the pelvic rotate posteriorly.
- Throughout the movement, the client needs to maintain extension in the opposite leg and keep the sacrum and low back flat against the mat or table
if the test is performed with the opposite hip in slight flextion, this allow the pelvis more freedom to move into a posterior tilt, allowing a greater range of motion and falsey increasing the length of the hamstring.
- Note the degree of movement attained from the table or mat that is achieved before the supine compresses the hand under the low back or the opposite leg begins to show a visible sign of lifting off the table or mat
- the mat or table represent 0 degrees
- the leg perpendicular to the mat or table represents 90 degrees.
Use the information provided in Table below:
interpretation of the Passive straight-leg raise
|The raised leg achieves >80 degrees of movement before the palvis rotate posteriorly.||Normal hamstring length|
|The raised leg achieves >80 degrees of movement before the palvis rotate posteriorly or there are any visible sign in the opposite leg lifting off the mat or table.||tight hamstring|