ANTERIOR INTEROSSEOUS NERVE ENTRAPMENT
The anterior interosseous nerve is a condition caused by the compression or irritation of the median nerve. This nerve can be entrapped at various sites along its course down the upper limb and each site is specific with regards to the clinical presentation, i.e. pronator teres syndrome, anterior interosseous nerve entrapment (also known as Kiloh-Nevin syndrome) and carpal tunnel syndrome.
The most common peripheral nerve entrapment is carpal tunnel syndrome. In comparison to this condition, anterior interosseous nerve entrapment is very rare. With this condition, the median nerve can be pinched or irritated as it passes between the two heads of the pronator teres muscle.
This leads to weakness of some of the muscles which bend the thumb (flexor pollicis longus), index and third fingers (flexor digitorum profundus), as well as the pronator quadratus muscle. There may also be some aching along the front of the forearm. This condition may come on following trauma or occur as a result of repetitive activity.
These clinical signs can be observed by the inability to perform the “ok” sign of tip-to-tip opposition of the thumb and index finger. Instead, a positive pinch deformity is observed, whereby a pulp-to-pulp rather than a tip-to-tip pinch is produced.
(The list of conditions given above and subsequent explanations are intended as a general guide and should not be considered a replacement for a full medical examination. Furthermore, we do not purport to treat all the conditions listed. Should you wish to discuss any of these conditions with our chiropractors, please do not hesitate to phone the clinic on 020 7374 2272 or email enquiries@body-motion.co.uk).
Our team of chiropractors and massage therapists are on hand to answer any questions you may have, so get in touch today via enquiries@body-motion.co.uk or on +44 (0)20 7374 2272.