5.2.1 User Manual Isoforce
REV 5
01st July 2014
page 39 von 77
TUR Therapietechnik GmbH | Grubenstr. 20 | 18055 Rostock | Germany
3.2.3 Hip Internal – External Rotation
Rotation Axis:
Along the long axis of the femur
Anatomical Zero: Straight leg in neutral position
Range of Motion: Physiological ROM is 45 degrees in internal and
45 degrees in external rotation. However, in isokinetic testing up to
10 degrees in internal and up to 25 degrees in external rotation is suggested.
Isoforce offers one positioning possibility, in supine position.
Muscles Involved: Obturators and Gluteals
Attachments Needed
Dynamometer: Ankle Adapter (ADA1) for supine
Set up & positioning
Put the mechanical stops to “B” red and “B” red.
Attach the ankle adapter ADA1 to the dynamometer by sliding it in the input arm from the top,
short side. Tighten it firmly by turning the knob placed in the input arm clock wise..
Ask the subject to lay on the chair in supine position.
Place the subject's ankle in the ankle adapter and secure it firmly by tightening the straps.
Set the axis of the joint rotation. The axis of rotation is along the axis of the femur. Make sure that
the leg is straight and there is no flexion on the knee joint.
Opposite Side
Unstrap patient's thigh from the stabilizer, as well as his/her ankle.
Slide the chair away from the dynamometer.
Adjust the chair and the dynamometer to align the other leg. Normally only a short rotation of the
dynamometer and the chair is requires.
Follow the steps 4 -5 as described above.
