Anatomic localization of motor points in flexor carpi radialis and flexor carpi ulnaris muscles

2013 ◽  
Vol 333 ◽  
pp. e564-e565 ◽  
Author(s):  
H. Cheong ◽  
S.H. Hong ◽  
M.E. Chung
Keyword(s):  
Flexor Carpi Radialis ◽  
Flexor Carpi Ulnaris ◽  
Anatomic Localization

Comparison of Flexor Carpi Radialis and Flexor Carpi Ulnaris EMG Activity Among Three Common Hand Grips During the Deadlift

2015 ◽  
Vol 47 ◽  
pp. 930
Author(s):  
Grant Smith ◽  
John Petrizzo ◽  
Sarah Cote ◽  
Daniella Pusateri ◽  
Louise Mills-Strasser ◽  
...  
Keyword(s):  
Emg Activity ◽  
Flexor Carpi Radialis ◽  
Flexor Carpi Ulnaris

In Vivo Three-Dimensional Mechanical Actions of Individual Flexor-Pronator Muscles: Role in Elbow Valgus Stability

2008 ◽  
Vol 24 (4) ◽  
pp. 325-332 ◽  
Author(s):  
Jason E. Hsu ◽  
Qiyu Peng ◽  
David A. Schafer ◽  
Jason L. Koh ◽  
Gordon W. Nuber ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Ulnar Collateral Ligament ◽  
Elbow Flexion ◽  
Force Sensor ◽  
Muscle Group ◽  
Collateral Ligament ◽  
Flexor Carpi Radialis ◽  
Pronator Teres ◽  
Flexor Carpi Ulnaris

The flexor-pronator mass is thought to be the primary dynamic valgus stabilizer of the elbow and protects the ulnar collateral ligament. However, in vivo multiaxis actions of individual muscles of the flexor-pronator group and their roles in valgus stability have not been investigated quantitatively. This study tested the hypothesis that individual muscles of the flexor-pronator muscle group produce a significant varus moment that provides elbow valgus stability. The flexor carpi ulnaris, flexor carpi radialis, and pronator teres were selectively activated, and the resulting multiaxis moments at the elbow measured at 0°, 30°, 60°, and 90° of elbow flexion using a six-axis force sensor were analyzed for their role in generating varus moment and protecting the ulnar collateral ligament. Considerable off-axis moments were generated by each muscle tested. Through the range of elbow flexion, the varus moment was the major component of the multiaxis action of the flexor carpi ulnaris (p< .001). The flexor carpi radialis and pronator teres had significant actions as elbow flexors and pronators (p≤ .032); these muscles also had a significant varus contribution at 90° elbow flexion (p≤.019). The results suggest that the flexor-pronator muscle group plays an important role in valgus stability of the elbow. In particular, the flexor carpi ulnaris creates a significant varus moment, which is important in unloading and protecting the ulnar collateral ligament. Rehabilitation and strengthening of the flexor-pronator muscle group may help prevent failure of the ulnar collateral ligament and may also help compensate for a medially insufficient elbow.

Bilateral Flexor Carpi Radialis Brevis and Unilateral Flexor Carpi Ulnaris Brevis Muscle: Case Report

2009 ◽  
Vol 34 (10) ◽  
pp. 1868-1871 ◽  
Author(s):  
Simon Jeffery Chong ◽  
Sami Al-Ani ◽  
Clinton Pinto ◽  
Bruce Peat
Keyword(s):  
Case Report ◽  
Flexor Carpi Radialis ◽  
Flexor Carpi Ulnaris

scholarly journals Anticipatory and Reactive Response to Falls: Muscle Synergy Activation of Forearm Muscles

Hand Surgery ◽  
2015 ◽  
Vol 20 (03) ◽  
pp. 343-351
Author(s):  
Greg Couzens ◽  
Graham Kerr
Keyword(s):  
Elbow Flexion ◽  
Muscle Synergy ◽  
Shoulder Abduction ◽  
Anticipatory Response ◽  
Surface Electromyogram ◽  
Flexor Carpi Radialis ◽  
Abductor Pollicis Longus ◽  
Forearm Muscles ◽  
Flexor Carpi Ulnaris ◽  
Extensor Carpi Radialis

We investigated the surface electromyogram response of six forearm muscles to falls onto the outstretched hand. The extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris, abductor pollicis longus, flexor carpi radialis and flexor carpi ulnaris muscles were sampled from eight volunteers who underwent ten self-initiated falls. All muscles initiated prior to impact. Co-contraction is the most obvious surface electromyogram feature. The predominant response is in the radial deviators. The surface electromyogram timing we recorded would appear to be a complex anticipatory response to falling modified by the effect on the forearm muscles following impact. The mitigation of the force of impact is probably more importantly through shoulder abduction and extension and elbow flexion rather than action of the forearm muscles.

scholarly journals Combined flexor carpi ulnaris and flexor carpi radialis transfer for restoring elbow function after brachial plexus injury

2019 ◽  
Vol 12 (7) ◽  
pp. e230406
Author(s):  
Pichitchai Atthakomol ◽  
Sezai Ozkan ◽  
Neal Chen ◽  
Sang-Gil Lee
Keyword(s):  
Brachial Plexus ◽  
Brachial Plexus Injury ◽  
Pinch Strength ◽  
Antagonist Muscle ◽  
Flexor Carpi Radialis ◽  
Nerve Transfers ◽  
Flexor Carpi Ulnaris ◽  
Agonist And Antagonist ◽  
Elbow Function ◽  
Muscle Innervation

The result of combined agonist and antagonist muscle innervation in traumatic brachial plexus injury through the intraplexal fascicle nerve transfers with the same donor function has not yet been reported. We describe a patient with a C5–C7 traumatic brachial plexus injury who had a combined transfer of the flexor carpi radialis (FCR) fascicle to the musculocutaneous nerve and the flexor carpi ulnaris (FCU) fascicle to the radial nerve of the triceps. The patient returned for his follow-up visit 2 years after his surgery. The muscle strengths of his triceps and biceps were Medical Research Council grade 2 and 0, respectively. Compared with his uninjured side, his grip strength was 9.8%, and his pinch strength was 14.2%. Our case report provides insights on result of combined agonist and antagonist muscle innervation through combining the motor fascicle of the FCR and FCU to restore the elbow flexor and extensor. The result may not be promising.

scholarly journals Comparison between Flexor Carpi Radialis and Flexor Carpi Ulnaris Tendon Transfer for Fingers’ Extension in High Radial Nerve Palsy

2021 ◽  
Vol 48 (3) ◽  
pp. 9-15
Author(s):  
Sumon Kumar Sen ◽  
Nakul Kumar Datta ◽  
Dipendra Misra ◽  
Zahidul Hak Khan ◽  
Jahidul Islam ◽  
...  
Keyword(s):  
Radial Nerve ◽  
Tendon Transfer ◽  
Nerve Palsy ◽  
Surgical Intervention ◽  
Controlled Trial ◽  
Radial Nerve Palsy ◽  
Extension Deficit ◽  
Flexor Carpi Radialis ◽  
Flexor Carpi Ulnaris ◽  
Transfer Procedures

The hand grip is severely impaired following high radial nerve palsy due to loss of extension of the wrist, metacarpo- phalangeal joint of fingers and thumb. If radial nerve does not show neural recovery following conservative or surgical repair during the optimum time, tendon transfer is considered the standard treatment. To evaluate and compare the clinical outcome between flexor carpi radialis and flexor carpiulnaris tendon transfer for fingers’ extension in high radial nerve palsy. This randomized controlled trial study was carried out in the Department of Orthopedic Surgery, Bangabandhu Sheikh Mujib Medical University, Dhaka over a period of two years from January 2013 to December 2014. A total of 30 patients with high radial nerve palsy were recruited, 15 patients were gone through Flexor Carpi Radialis tendon transfer procedure (FCR group) and the rest 15 patients were gone through Flexor Carpi Ulnaris tendon transfer procedure(FCU group). The patients were followed up for 12 weeks after surgical intervention. Out of all patients, 86.7% male were encountered in each group. The mean age was found 31.07±9.14 years in FCR group and 33.60±10.79 years in FCU group. Humerus fracture was remained a major cause of radial nerve palsy in both FCR and FCU groups (26.7% vs. 33.3%). In final follow-up at 12th week, no extension deficit was observed at MCP joint (93.3% vs. 80.0%, p>0.05).The end result of surgical intervention was found satisfactory equally in both the groups (86.7%). In case of high radial nerve palsy, both FCR and FCU tendon transfer procedures are effective forfingers’ extension at MCP joint. Bangladesh Med J. 2019 Sep; 48 (3): 9-15

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