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Measurement of hip internal rotation range of motion in individuals with hip joint disorders
Together with the Schulthess Clinic, the Sensory-Motor Systems Lab, ETH Zurich, has developed the mHIRex which, based on the common clinical manoeuvre, precisely determines the force required for internal hip rotation. The next step would be to assess hip internal rotation in a large cohort of consecutive patients with hip disorders.
Keywords: hip osteoarthritis, femoroacetabular impingement syndrome, clinical examination, biomechanics
Hip osteoarthritis (OA) can cause pain and disability, from minor activity limitations to severe participation restrictions. Joint stiffness and reduced range of motion are among the most common functional impairments, which impact function and quality of life. A restricted hip internal rotation (often symptomatic) is one of the typical findings in the clinical examination of patients with hip OA.
Morphology deformities (cam/pincer) of the hip joint, which have been found be common in young active individuals, represent potential risk factors for hip OA. Individuals diagnosed with femoroacetabular impingement syndrome (FAIS), as an example, young athletes with cam morphology involved in vigorous sport activities, may present with a limitation in hip internal rotation.
Recently, it has been found in 244 asymptomatic young males that the standardised assessment (with an examination chair) of internal hip rotation did not allow the exclusion of a cam morphology, but might be used to rule one in. These preliminary results can support the use of a standardised assessment of internal hip rotation in screening of youth and adolescents involved in high-risk sports (i.e., ice hockey, gymnastics, martial arts) and in the documentation of hip range of motion in individuals with other hip disorders.
The ETH SMS Lab has developed and pilot tested a new mobile device (called “mHIRex”) to examine hip internal rotation while also recording the torque needed for/produced by the hip against the movement (see Figure 1). This device was found to be accurate in the measurement of both hip motion and torque. As only a small number of subjects (24 healthy individuals, 14 elite athletes, and 4 patients with diagnosed FAIS) were involved in the feasibility study, no conclusions from the collected data could be drawn.
The next step would be to assess hip internal rotation in a large cohort of consecutive patients with hip disorders (incl. OA, FAIS) at the Schulthess Clinic.
Hip osteoarthritis (OA) can cause pain and disability, from minor activity limitations to severe participation restrictions. Joint stiffness and reduced range of motion are among the most common functional impairments, which impact function and quality of life. A restricted hip internal rotation (often symptomatic) is one of the typical findings in the clinical examination of patients with hip OA. Morphology deformities (cam/pincer) of the hip joint, which have been found be common in young active individuals, represent potential risk factors for hip OA. Individuals diagnosed with femoroacetabular impingement syndrome (FAIS), as an example, young athletes with cam morphology involved in vigorous sport activities, may present with a limitation in hip internal rotation. Recently, it has been found in 244 asymptomatic young males that the standardised assessment (with an examination chair) of internal hip rotation did not allow the exclusion of a cam morphology, but might be used to rule one in. These preliminary results can support the use of a standardised assessment of internal hip rotation in screening of youth and adolescents involved in high-risk sports (i.e., ice hockey, gymnastics, martial arts) and in the documentation of hip range of motion in individuals with other hip disorders. The ETH SMS Lab has developed and pilot tested a new mobile device (called “mHIRex”) to examine hip internal rotation while also recording the torque needed for/produced by the hip against the movement (see Figure 1). This device was found to be accurate in the measurement of both hip motion and torque. As only a small number of subjects (24 healthy individuals, 14 elite athletes, and 4 patients with diagnosed FAIS) were involved in the feasibility study, no conclusions from the collected data could be drawn. The next step would be to assess hip internal rotation in a large cohort of consecutive patients with hip disorders (incl. OA, FAIS) at the Schulthess Clinic.
- Get familiar with the relevant literature, talk to clinicians
- Elaborate the measurement device
- Run study, analyse data, present results
- Get familiar with the relevant literature, talk to clinicians - Elaborate the measurement device - Run study, analyse data, present results
- Exchange with very experienced clinicians
- Being involved in translational science
- Exchange with very experienced clinicians - Being involved in translational science
- Background in Human Movement Science
- Interested in clinical biomechanics
- Ready to join us for at least 3 months
- Background in Human Movement Science - Interested in clinical biomechanics - Ready to join us for at least 3 months
Please send your CV and latest transcript to Peter Wolf, pwolf@ethz.ch
Please send your CV and latest transcript to Peter Wolf, pwolf@ethz.ch