Special orthopaedic tests are commonly used by clinicians in the assessment of those with musculoskeletal pain or injury. There is a mind-boggling number of these tests, usually named after the clinicians who invented them covering all areas of the body, and they are believed to help diagnose many different injuries and pathologies. However, it’s time to look at these special tests differently and start to realise that perhaps many special tests are not that special.
There is no doubting that a thorough physical exam is essential when assessing someone with suspected musculoskeletal pain or injury, and sometimes using special orthopaedic tests have a role in this physical exam. However, these special tests are often used too much, relied upon too readily, and trusted too implicitly to confirm a diagnosis when they often don’t.
The shoulder arguably has more special tests than any other area that are believed to ‘diagnose’ all manner of shoulder problems. At my last count, there were well over 200 special tests for shoulders and this continues to grow as more and more are dreamt up. However, despite common belief and them still being widely taught, many special tests don’t and can’t do what they claim they can do.
For example, the belief that the ’empty can’ special test stresses the Supraspinatus tendon more than the ‘full can’ special test is not actually true, in fact, both can positions do not stress ANY part of the rotator cuff more than any of the other surrounding shoulder muscles (see figure below ref). Also, the belief that pain on the ‘Speeds’ or ‘Yergasons’ special tests isolates the long head of biceps from the other surrounding shoulder tissues and therefore is more specific for biceps tendon pathology is also not true (ref).
And this is not unique to the shoulder special tests, it is also the same for many other special tests in many other areas. For example, the belief that pain during the ‘McMurrays’ special test stresses and strains the knee meniscus alone is not so (ref). The belief that pain on the ‘Spurlings’ special test or during the ‘upper limb tension’ special tests only indicates neural compression or tension is just not so (ref).
Special tests simply do not isolate specific tissues or structures, therefore when pain is reproduced during these tests all they tell you is that pain is reproduced not what the source is. That’s even if there is mechanical ‘source’ for the pain at all.
Sometimes, I think pain can be reproduced during these tests simply due to expectations of it going to hurt, especially when I hear a clinician explain to the patient what the purpose of this special test is for… “Ok Mrs Miggins this may hurt a little bit when I do this…” talk about priming painful expectations!
However, this is not to say that all special tests are completely useless, we just have to recognise their limitations, and stop calling them special. Personally I think they should all be called pain provocation tests, and although most pain provocation tests are not very specific, that is they can not rule in a particular tissue, structure, or pathology, they tend to be more sensitive, that is they are better at ruling out a tissue, structure, or pathology. I think negative pain provocation testing is far more useful in some examinations than positive pain provocation.
It must also be remembered that the physical exam is always shaped and influenced by the patient’s history. For example, someone with knee pain who tells you they heard a loud pop and sudden pain after turning and twisting suddenly, is going to have a different exam than someone who tells you of knee pain building gradually when they walk more. You are probably only going to do ACL laxity testing on one of these patients. The history always shapes your exam. You will NOT do all the same tests on all the patients you see.
However, there is an exception to this rule, there is actually one ‘special’ test I do with every patient I see at the beginning of every physical exam regardless of where their problem is, or what I suspect the pathology is or is not. This is the ‘most special orthopaedic test’ and it is one I think every clinician should do.
I ask every patient I see what is THE most painful, fearful, difficult thing for them to do. Once they tell me what this is, my ‘most special orthopaedic test’ is to get them to do the one thing they just told me they don’t want to do.
This may seem unconventional, harsh, even unkind or uncaring after all a patient has just told you something they can’t or don’t want to do and you go ask and them to do it without any assessment or treatment first! However, I find it is really useful to start all physical assessments observing the patient doing the one thing they don’t want to do. It allows me to gauge their function, pain, fear, anxiety, apprehension etc all in one simple quick test before I go on to look at other things.
It truly is the most special of all the special tests… Give it a try, but please just don’t call it the ‘Meakins’ special test… unless of course you want too ;o)
As always thanks for reading