What does isokinetic testing measure?
A CYBEX Isokinetic Test is used to measure the maximum strength of a joint throughout its available range-of-motion (ROM). The test compares the involved side to the uninvolved side. Results are used to design rehabilitation protocols and help make return to sport and return to work decisions.
How do you interpret limb symmetry index?
To calculate “Limb Symmetry Index” values, average the two-recorded trials on each limb; divide the operative limb average by the non-operative limb average, and multiply by 100 (percentage).
How do you calculate ACL tear grade?
Grading of Lachman Test
- Normal: No side-to-side difference.
- Grade 1 (mild): 3-5 mm more translation of the tibia on the femur.
- Grade 2 (moderate): 5-10 mm more translation of the tibia on the femur.
- Grade 3 (severe): >10 mm more translation of the tibia on the femur.
How does an isokinetic strength test work?
Isokinetic exercise is performed with a specialized apparatus which provides variable resistance so that no matter how much effort is exerted the movement is conducted at a constant speed.
Why is isokinetic testing important?
Isokinetic testing can be helpful during the rehabilitation of orthopaedic patients, since it allows easy monitoring of progress. It also enables the patient to work on muscle rehabilitation in a controlled manner at higher speeds than are possible with more conventional exercise equipment.
What do you mean by isokinetic?
Isokinetic exercise refers to movement at a constant speed regardless of the force applied. Muscles contract and shorten at a constant speed in isokinetic contraction. Isokinetic exercise allows muscles to gain strength consistently all through the range of movement. This can also be called a dynamic contraction.
What is leg symmetry index?
The Limb Symmetry Index (LSI) is a ratio of performance between limbs that is frequently used to assess the function of the lower limb and track the progression of rehabilitation post-Anterior Cruciate Ligament reconstruction.
How do you calculate Quad index?
This method allowed for each individual’s uninvolved quadriceps to serve as a control for the involved quadriceps. The quadriceps index was determined using the following equation: quadriceps index = (involved-limb MVIC/uninvolved-limb MVIC) × 100%.
Can a Grade 1 ACL tear heal?
Grade 1 sprains usually heal within a few weeks. Maximal ligament strength will occur after six weeks when the fibres have fully matured and healed. The best strategies are to rest from activities that are painful, icing the injury, and some anti-inflammatory medications are useful.
What percent of ACL tears need surgery?
About 50% of young active patients will need a delayed reconstruction of the ACL (level 1 study).
What is isokinetic strength?
Isokinetic exercise is a type of strength training. It uses specialized exercise machines that produce a constant speed no matter how much effort you expend. These machines control the pace of an exercise by fluctuating resistance throughout your range of motion.
What is unique about isokinetic testing?
Isokinetic muscle testing is performed with a constant speed of angular motion but variable resistance. Isokinetic dynamometers have been shown to produce relatively reliable data when testing simple, uniaxial joints, such as the knee, as well as when testing the spine in flexion and extension.
When do you need isokinetic testing after ACL reconstruction?
CONCLUSION. Isokinetic testing of dynamic stabilizers of the knee is need in diagnostic and treatment thigh muscle imbalance after ACL injury and surgical intervention. It is an objective parameter for decision of return to sports activities after ACL reconstruction.
How is isokinetic testing used in rehabilitation outcome?
Introduction: Numerous rehab protocols have been used in rehabilitation after ACL reconstruction. Isokinetic testing is an objective way to evaluate dynamic stability of the knee joint that estimates the quality of rehabilitation outcome after ACL reconstruction.
Is the isokinetic dynamometer still used for knee testing?
The basic design of isokinetic dynamometers (except for special purpose units) has not changed since the original instrumentation became available in the 1960s. The design is still better suited for knee testing and rehabilitation than any other joint (Dvir 1995).
Is the peak torque lower on an isokinetic test?
Generally the peak torque will be lower. It must be stressed that normal isokinetic test results do not exclude meniscal pathology. Opposite curve deformations are often seen in the hamstrings and quadriceps curve data.