Posterolateral rotatory instability, abbreviated as PLRI is the most commonly encountered pattern of elbow instability.
PLRI typically occurs as a result of a fall on the outstretched arm, generating an axial load, valgus force, and an external rotational movement (torque) about the forearm with respect to the humerus. This causes the radial head and proximal ulna to subluxate posterolaterally away from the humerus in a rotatory fashion detaching or tearing the lateral collateral ligament complex in stage 1. In a more severe stage 2, the tissue disruption progresses anteriorly and posteriorly around the elbow to the medial side and in stage 3, the injury involves the medial collateral ligament or even the common flexor-pronator origin.
Regan et al. (2006) did a diagnostic study on the Stand-up test, which is also called the chair push-up test, and found a sensitivity of 88% with unknown specificity. For this reason, we give this test a questionable clinical value in practice.
The Stand-up test makes use of the patient’s body weight to create an axial load, and valgus torque at the elbow resulting in posterolateral subluxation of the elbow. In order to perform the test have your patient seated on a chair with armrests. His elbows are both in 90 degrees of flexion with abducted shoulders and the forearm supinated. Then ask the patient to push himself up from the chair.
This test is positive if the patient has apprehension, reports a sense of instability or lateral elbow pain or if actual dislocation of the radial head takes place.
21 OF THE MOST USEFUL ORTHOPAEDIC TESTS IN CLINICAL PRACTICE
What customers have to say about the Assessment E-Book
The Assessment E-Book This book helped me in my studying for my exam and in assessing my first patients. Awesome! Also for beginners!
The Assessment E-Book It’s an amazing Compilation! Congrats to all the work you have put in there. You’ll propably find all the test’s you’ve been looking for with propper explaination and source to doublecheck for you self. definetly a must have for every student, but it will also help an experienced practioner. Im looking forward to the lifelong updates on the topics.
Great work, guys
The Assessment E-Book A must-have for all physiotherapists, osteopaths and manual therapists. The authors conducted an extensive research on assessment tests in manual therapy. I find it very easy to read. The more I read the more I learn. Thank you!
The Assessment E-Book This book is great! It is very structured and detailed. It works extremely well on my Macbook and iPad.
The Assessment E-Book The best way to spend 80euros. Totally worth it. The amount of work you put behind this must have been absolutely huge. Every physical or physiotherapist should own it.
Congrats guys you’ve done an incredible job.
I’ve learnd a lot of new things and my approach to therapy in general have totally changed.
In one word: amazing. Keep going guys ! Best wishes from france.
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.