scholarly journals Ulnar nerve contribution in the innervation of the triceps brachii muscle ulnar nerve to the triceps brachii

1970 ◽  
Vol 6 (1) ◽  
pp. 834-839
Author(s):  
DLR Silva ◽  
MP Barros ◽  
TGS Freire ◽  
L Firmino Júnior ◽  
WRB Almeida Filho ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Terminal Branch ◽  
Upper Limbs ◽  
Triceps Brachii ◽  
Medial Head ◽  
Muscle Innervation ◽  
Triceps Brachii Muscle ◽  
Long Head ◽  
Lateral Head

The ulnar nerve is considered the thickest terminal branch of the medial cord in the brachial plexus and most authors does not mention the possibility of this nerve emitting branches to the arm. However, some studies reported that the ulnar nerve could supply the medial head of triceps brachii muscle. The main objective in this study was identifying the presence of ulnar nerve branches in triceps brachii muscle. Sixty upper limbs of adult Brazilian corpses of both sexes were used. The estimated age was between 25 and 80 years old. Every studied piece had the nerves and their branches quantified and measured with a manual mechanic caliper. The branches were photographed and had the data registered in individual files. Were found ulnar nerve branches for all the heads of triceps brachii muscle: 1 branch (9,1%) to lateral head, 2 branches (18,1%) to long head and 8 branches (72,7%) to medial head. Thus, we can conclude that the contribution of ulnar nerve to triceps brachii muscle constitutes an important anatomical variation.Key words: Ulnar nerve; Triceps brachii muscle; Innervation.

scholarly journals Highest extent of lateral and medial heads of triceps brachii muscle

2015 ◽  
Vol 32 (02) ◽  
pp. 063-065
Author(s):  
S. Lovesh ◽  
D. Kaur ◽  
M. Jain ◽  
S. Pandey
Keyword(s):  
Shoulder Joint ◽  
Clinical Importance ◽  
Triceps Brachii ◽  
Medial Head ◽  
Accurate Knowledge ◽  
Fracture Management ◽  
Shoulder Region ◽  
Triceps Brachii Muscle ◽  
Formalin Fixed ◽  
Lateral Head

Abstract Introduction: Various studies have been done on triceps brachii muscle but the description of the highest extent of lateral and medial head of triceps brachii muscle remained unexplored that is why this study was undertaken to know the extent of their proximal attachments in relation to anatomical neck of humerus and capsule of shoulder joint. Materials and Methods: The shoulder region of 50 formalin fixed upper limbs were dissected to explore the capsule of shoulder joint to reach the highest extent of lateral & medial head of triceps brachii muscle where the nature of fibres, fleshy or tendinous was noted. Oblique and vertical distances of proximal attachment of lateral & medial head of triceps brachii muscle to the anatomical neck of humerous was measured with the help of a sliding caliper. Results: Medial head of triceps brachii muscle in all the cases was fleshy in origin while that of lateral head; fibres were fleshy and tendinous in 82% & 18% of cases, respectively. Fibres of lateral and medial head were blending with the capsule of shoulder joint in 28% & 6% of cases respectively. Maximum cases of lateral head were having their oblique and vertical distances between 21-40 mm (64% & 58% respectively) while those for medial head were >40 mm (68% & 74% respectively). Conclusion: Accurate knowledge of these anatomical patterns of triceps brachii muscle are of considerable clinical importance in the conduct of reparative open access and arthroscpic surgeries around the shoulder and the fracture management of the upper end of humerus.

Ulnar nerve innervation of the medial head of the triceps brachii muscle: A cadaveric study

2013 ◽  
Vol 26 (8) ◽  
pp. 1028-1030 ◽  
Author(s):  
Marios Loukas ◽  
Sharath S. Bellary ◽  
Neslihan Yüzbaşioğlu ◽  
Mohammadali M. Shoja ◽  
R. Shane Tubbs ◽  
...  
Keyword(s):  
Ulnar Nerve ◽  
Cadaveric Study ◽  
Triceps Brachii ◽  
Medial Head ◽  
Triceps Brachii Muscle

scholarly journals Surgical Implications of Innervation Pattern of the Triceps Muscle: A Cadaveric Study

2018 ◽  
Vol 10 (03) ◽  
pp. 139-142 ◽  
Author(s):  
Prashant Chaware ◽  
John Santoshi ◽  
Manmohan Patel ◽  
Mohtashim Ahmad ◽  
Bertha Rathinam
Keyword(s):  
Radial Nerve ◽  
Axillary Nerve ◽  
Nerve Supply ◽  
Upper Limbs ◽  
Innervation Pattern ◽  
Medial Head ◽  
Triceps Muscle ◽  
Muscle Transfers ◽  
Long Head ◽  
Lateral Head

AbstractThe innervation pattern of triceps is complex and not fully comprehended. Anomalous innervations of triceps have been described by various authors. We have attempted to delineate the nerve supply of the triceps and documented the anomalous innervations of its different heads. The brachial plexus and its major branches (in the region of the axilla and arm) and triceps were dissected in 36 embalmed cadaver upper limbs. Long head received one branch from radial nerve in 31 (86%) specimens. Four (11%) specimens received two branches including one that had dual innervation from the radial and axillary nerves, and one (3%) specimen had exclusive innervation from a branch of the axillary nerve. Medial head received two branches arising from the radial nerve in 34 (94%) specimens. One (3%) specimen received three branches from the radial nerve whereas one (3%) had dual supply from the radial and ulnar nerves. Lateral head received multiple branches exclusively from the radial nerve, ranging from 2 to 5, in all (100%) specimens. Knowledge of the variations in innervation of the triceps would not only help the surgeon to avoid inadvertent injury to any of the nerve branches but also offers new options for nerve and free functional muscle transfers.

Relationship between the ulnar nerve and the branches of the radial nerve to the medial head of the triceps brachii muscle

2018 ◽  
Vol 32 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Sung Hun Cho ◽  
In-Hyuk Chung ◽  
U-Young Lee
Keyword(s):  
Ulnar Nerve ◽  
Radial Nerve ◽  
Triceps Brachii ◽  
Medial Head ◽  
Triceps Brachii Muscle

Electrophysiological study of the dominant motor innervation to the extensor digitorum communis muscle and long head of triceps brachii at posterior divisions of brachial plexus

Microsurgery ◽  
2011 ◽  
Vol 31 (7) ◽  
pp. 535-538 ◽  
Author(s):  
Wen-Jun Li ◽  
Shu-Feng Wang ◽  
Peng-Chen Li ◽  
Yu-Cheng Li ◽  
Ya-Di Jin ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Electrophysiological Study ◽  
Extensor Digitorum ◽  
Extensor Digitorum Communis ◽  
Motor Innervation ◽  
Triceps Brachii ◽  
Long Head

Transfer of a Motor Fascicle From the Ulnar Nerve to the Branch of the Radial Nerve Destined to the Long Head of the Triceps for Restoration of Elbow Extension in Brachial Plexus Surgery

Neurosurgery ◽  
2011 ◽  
Vol 70 (2) ◽  
pp. E516-E520 ◽  
Author(s):  
Leandro Pretto Flores
Keyword(s):  
Computed Tomography ◽  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Radial Nerve ◽  
Nerve Transfer ◽  
Elbow Flexion ◽  
Shoulder Abduction ◽  
Elbow Extension ◽  
Long Head ◽  
Brachial Plexus Surgery

Abstract BACKGROUND AND IMPORTANCE: Restoration of elbow extension has not been considered of much importance regarding functional outcomes in brachial plexus surgery; however, the flexion of the elbow joint is only fully effective if the motion can be stabilized, what can be achieved solely if the triceps brachii is coactivated. To present a novel nerve transfer of a healthy motor fascicle from the ulnar nerve to the nerve of the long head of the triceps to restore the elbow extension function in brachial plexus injuries involving the upper and middle trunks. CLINICAL PRESENTATION: Case 1 is a 32-year-old man sustaining a right brachial extended upper plexus injury in a motorcycle accident 5 months before admission. The computed tomography myelogram demonstrated avulsion of the C5 and C6 roots. Case 2 is a 24-year-old man who sustained a C5-C7 injury to the left brachial plexus in a traffic accident 4 months before admission. Computed tomography myelogram demonstrated signs of C6 and C7 root avulsion. The technique included an incision at the medial border of the biceps, in the proximal third of the involved arm, followed by identification of the ulnar nerve, the radial nerve, and the branch to the long head of the triceps. The proximal stump of a motor fascicle from the ulnar nerve was sutured directly to the distal stump of the nerve of the long head of the triceps. Techniques to restore elbow flexion and shoulder abduction were applied in both cases. Triceps strength Medical Research Council M4 grade was obtained in both cases. CONCLUSION: The attempted nerve transfer was effective for restoration of elbow extension in primary brachial plexus surgery; however, it should be selected only for cases in which other reliable donor nerves were used to restore elbow flexion.

scholarly journals Differential muscle function between muscle synergists: long and lateral heads of the triceps in jumping and landing goats (Capra hircus)

2008 ◽  
Vol 105 (4) ◽  
pp. 1262-1273 ◽  
Author(s):  
Andrew M. Carroll ◽  
David V. Lee ◽  
Andrew A. Biewener
Keyword(s):  
Muscle Function ◽  
High Speed ◽  
Muscle Activation ◽  
Reaction Force ◽  
Elbow Flexion ◽  
Capra Hircus ◽  
Triceps Brachii ◽  
Joint Work ◽  
Long Head ◽  
Lateral Head

We investigate how the biarticular long head and monoarticular lateral head of the triceps brachii function in goats ( Capra hircus) during jumping and landing. Elbow moment and work were measured from high-speed video and ground reaction force (GRF) recordings. Muscle activation and strain were measured via electromyography and sonomicrometry, and muscle stress was estimated from elbow moment and by partitioning stress based on its relative strain rate. Elbow joint and muscle function were compared among three types of limb usage: jump take-off (lead limb), the step prior to jump take-off (lag limb), and landing. We predicted that the strain and work patterns in the monoarticular lateral head would follow the kinematics and work of the elbow more closely than would those of the biarticular long head. In general this prediction was supported. For instance, the lateral head stretched (5 ± 2%; mean ± SE) in the lead and lag limbs to absorb work during elbow flexion and joint work absorption, while the long head shortened (−7 ± 1%) to produce work. During elbow extension, both muscles shortened by similar amounts (−10 ± 2% long; −13 ± 4% lateral) in the lead limb to produce work. Both triceps heads functioned similarly in landing, stretching (13 ± 3% in the long head and 19 ± 5% in the lateral) to absorb energy. In general, the long head functioned to produce power at the shoulder and elbow, while the lateral head functioned to resist elbow flexion and absorb work, demonstrating that functional diversification can arise between mono- and biarticular muscle agonists operating at the same joint.

Mass effect of the distal triceps brachii muscle on ulnar nerve movement during elbow flexion

2022 ◽  
Author(s):  
Ha Mok Jeong ◽  
Jeong Min Kim ◽  
Seok Kang ◽  
Joon Shik Yoon
Keyword(s):  
Ulnar Nerve ◽  
Elbow Flexion ◽  
Mass Effect ◽  
Triceps Brachii ◽  
Triceps Brachii Muscle

Presence of communication between radial and ulnar nerve at high humeral level and its distribution to triceps brachii muscle

2015 ◽  
Vol 4 (1) ◽  
pp. 39 ◽  
Author(s):  
Naveen Kumar ◽  
SatheeshaB Nayak ◽  
SurekhaD Shetty ◽  
RavindraS Swamy ◽  
Ashwini Aithal
Keyword(s):  
Ulnar Nerve ◽  
Triceps Brachii ◽  
Triceps Brachii Muscle

Partial ulnar nerve transfer to the branch of the long head of the triceps to recover elbow extension in C5, C6 and C7 brachial plexus palsy

Injury ◽  
2019 ◽  
Vol 50 ◽  
pp. S68-S70
Author(s):  
Jean-Noel Goubier ◽  
Cédric Maillot ◽  
Ghada Asmar ◽  
Frédéric Teboul
Keyword(s):  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Nerve Transfer ◽  
Elbow Extension ◽  
Brachial Plexus Palsy ◽  
Long Head
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