The thenar muscles are three short muscles located at the base of the thumb. Few examples of which include constant typing on mobile phones and laptops, work of a massage therapist, hammering, sewing and so forth. Opponens Pollicis. Thumb Muscle Exercises (1st CMCJ Stabilization) ⭐ Thenar Muscle Exercises “OK” Exercises. The skin overlying this region is the area stimulated when trying to elicit a palmomental reflex. The thenar eminence refers to the group of muscles on the palm of the human hand at the base of the thumb. TrPs in the opponens pollicis muscle refer pain to the palmar surface of the thumb and to the radial side of the palmar aspect of the wrist. 1. Hormonal changes in women, particularly postmenopausal can be one of the major risk factors of thenar eminence pain. The median nerve innervates all the thenar muscles. Together the muscle group primarily acts to oppose the thumb. This muscle works to flex and abduct the first finger, more commonly referred to as the thumb. They are responsible for the fine movements of the thumb. Prosthetics and Orthotics International 2016 41: 4, 379-386 Download Citation. The effect of thumb splinting on thenar muscles atrophy, pain, and function in subjects with thumb carpometacarpal joint osteoarthritis. GARS1-associated axonal neuropathy (Charcot-Marie-Tooth neuropathy type 2D / distal spinal muscular atrophy V [CMT2D/dSMA-V]) is characterized by adolescent or early-adult onset of weakness in the hands that may be preceded by transient cramping and pain in the hands on exposure to cold and cramping in calf muscles on exertion. However, the thenar eminence is supplied by the median nerve. Mokhtar Arazpour, Mohaddeseh Soflaei, Monireh Ahmadi Bani, Seyed Pezhman Madani, Mahsa Sattari, Akbar Biglarian, and Zahra Mosallanezhad. Structure. Thenar eminence pain is caused due to fine and repetitive nature of work, which leads to chronic overuse of the thumb. This however, is not always viable, for many different reasons. 3 Ways To Get Muscle Thenar Pain Relief… The number one way to treat any muscle pain, is to identify what activity is aggravating the pain, and to cease the activity. If this is the case, medical treatments and home remedies can often help, even if you don’t entirely stop the aggravating activity. The thenar eminence is the muscular bulge on the radial side of the palm due to the thenar muscles.They are innervated by median nerve, except for flexor pollicis brevis which is innervated by the ulnar nerve. For instance, a TrP within the adductor pollicis muscle refers an aching and deep pain along the thumb and to the radial styloid. Carpal tunnel causes pain and a lack of strength in the hand. The opponens pollicis is the largest of the thenar muscles, and lies underneath the other two. The word thenar comes from Greek θέναρ (thenar) 'palm of the hand'. The muscle bellies produce a bulge, known as the thenar eminence. Most of the muscles located in the hand receive respective nerve supplies from the ulnar nerve. Any muscle located in the thenar eminence can develop TrPs. (Please always monitor your pain or discomfort level in the affected thumb during your exercises, because “too much exercises can irritate your arthritic joint”, which means a ll the following exercises should be PAIN FREE! )