accessory muscle

accessory muscle

a relatively rare anatomical duplication of a muscle that may appear anywhere in the muscular system. The most common sign associated with an accessory muscle is the appearance of a soft tissue mass. Differential diagnosis without an exploratory operation is difficult because of the similar appearance of some tumors or soft tissue masses, such as ganglia. The appearance of the soft tissue mass associated with an accessory muscle may be transient, or it may be constant, depending on the location of the accessory muscle in relation to motion. In many individuals with accessory muscles, specific treatment is not indicated unless the accessory muscle interferes with normal function.

ac·ces·so·ry mus·cle

(ak-ses'ōr-ē mŭs'ĕl)
A muscle that is not primarily responsible for but does provide assistance in initiating movement.

accessory muscle

Any muscle whose action reinforces that of any other muscle.
References in periodicals archive ?
Side muscle scars connect median muscle scars and they are in a similar position as accessory muscle scars in some Ordovician bivalves considered as infaunal burrowers (Babinka, Coxiconchia or Praenucula) (Fig.
Current methods of accessory muscle stimulation need to be studied further to improve SCI respiratory management, particularly together with diaphragmatic pacing.
3) Rarely, compression has been attributed to the presence of an accessory muscle - the anconeus epitrochlearis.
Mild Exacerbation - Patients who have a mild exacerbation of asthma experience dyspnea on exertion, increased respiratory rate, tachycardia, and demonstrate no respiratory accessory muscle use.
In symptomatic patients, treatment options include ultrasound-guided corticosteroid injection followed by rehabilitation, while surgical options include fasciotomy or excision of the accessory muscle.
Accessory Muscle Activity Contributes to the Variation in Time to Task Failure for Different Arm Postures and Loads.
Patients on NPPV require strict monitoring of their vital signs, cardiac rhythm, dyspnoea, accessory muscle use and blood gas values.
She no longer had accessory muscle use or a tracheal tug, but still had a hoarse voice and mild stridor.
Most commonly compression has been attributed to the presence of an accessory muscle - the anconeus epitrochlearis.
These criteria are based on the following signs and symptoms: moderate-to-severe dyspnea with accessory muscle use and paradoxical breathing, moderate-to-severe acidemia and hypercapnia, and respiratory rate greater than 25 breaths/minute.
Before commitment to mechanical ventilation, these patients tend to experience dyspnea, difficulty sleeping, ineffective cough, expiratory muscle weakness, and accessory muscle use.
Patients who are most likely to fail botulinum toxin injection therapy are those who have thick, sebaceous skin, deep dermal scarring, extraordinarily deep lines, excess skin laxity as a result of aging, incomplete denervation, and accessory muscle function that contributes to the wrinkling.