Blog / Reinvigorating the silent arm
Indian roads can be chaotic, with dangerous stretches as well as reckless drivers. Any person involved in a road accident can face an injury that changes the function of an entire arm within seconds. These Brachial plexus injuries are among the most disabling nerve injuries affecting the upper limb.
Although population-level prevalence figures for India are limited, hospital-based studies show a strong prevalence of such injuries in road traffic accidents. In one Indian study of 304 patients with traumatic brachial plexus injuries, road traffic accidents accounted for 94% of cases, with two-wheelers involved in 90% of those accidents. Sadly, men involved in motorcycle accidents and such injuries are young, in their twenties and thirties.
The brachial plexus is a network of nerves arising from the neck and travelling towards the shoulder, arm and hand. These nerves carry signals that enable movement and sensation. An injury can therefore result in weakness, paralysis, loss of sensation and severe neuropathic pain.
The case of a 22-year-old boy who met with a road traffic accident and suffered a serious brachial plexus injury depicts how treatment helps. Following the accident, he lost movement in his shoulder and elbow.
For a young person at the beginning of adulthood, suddenly losing the ability to raise the arm or bend the elbow can deeply impact on quality of life. Everyday actions such as dressing, eating, bathing, reaching for an object or carrying something become challenging. He was thoroughly examined clinically and was diagnosed to have suffered from upper brachial plexus injury. He received physiotherapy initially after injury, but his clinical examinations and few investigations suggested that he would require surgery.
Three months after the injury, he underwent surgery to reconstruction of the injured nerves. The timing of surgery is an important part of brachial plexus management because muscles gradually lose their ability to respond when their nerve supply has been severely disrupted. Surgical planning depends on the type of injury, the roots involved, the condition of the nerves and the muscles they supply.
Over the following months, recovery was slow but steady through rehabilitation. His movement progressively returned. After eight months after surgery, he had achieved full recovery and resumed his routine activities.
His story demonstrates an important message for families facing brachial plexus injury: a paralysed arm following trauma deserves specialist assessment and a carefully planned treatment pathway.
The commonest cause of adult traumatic brachial plexus injury is a high-impact road traffic accident, particularly a motorcycle accident. The injury often occurs when the shoulder is forcefully pulled away from the head and neck, stretching or tearing the nerves. Severe trauma can also cause nerve-root avulsion, where a nerve root is pulled away from the spinal cord.
A limp or paralysed arm after an accident can sometimes be perceived as a permanent disability. The reality is not so, rather much more nuanced. The outcome depends on which nerves have been injured, whether they have been stretched, torn or avulsed, how quickly the injury is evaluated, and the reconstruction possible in that individual case.
Another misconception is that physiotherapy alone is enough as a treatment option. Though physiotherapy is an integral part of treatment, physiotherapy alone cannot repair the torn or avulsed nerve roots. However, one must not forget the role of rehabilitation. As nerves regenerate, physiotherapy and functional training help the recovering muscles regain strength and useful movement.
Timing plays an important role in not only investigating 5e brachial plexus injury but also in repair and rehabilitation. Many times, treatment protocols may vary depending upon the time elapsed between injury and presentation to brachial plexus surgeon.
Treatment has progressed considerably with microsurgery, improved imaging, intraoperative nerve stimulation and sophisticated nerve reconstruction techniques. Depending on the injury, surgeons may choose between nerve repair, nerve grafts or nerve transfers.
Nerve transfer, also called neurotization, is particularly significant. A functioning donor nerve is connected to an injured nerve so that it can provide a new pathway to the target muscle. Transfers can be designed to restore important functions such as shoulder movement and elbow flexion. Recent approaches increasingly make use of selective distal nerve transfers, which bring the nerve closer to the target muscle and can shorten the distance required for reinnervation.
As research continues into advanced reconstruction, muscle transfers, nerve glue, nerve grafts and techniques aimed at improving regeneration, one must remember that this too is treatable.
Brachial plexus injury can change life in an instant. Seeking immediate medical help, specialist assessment, appropriate surgical planning and committed rehabilitation can change the trajectory of recovery.
