The humeral origin of the brachioradialis muscle: An unusual site of high radial nerve compression

Cherchel, Alexandra; Zirak, Christophe; Mey, Albert De

doi:10.1016/j.bjps.2013.04.023

Cited by 4 publications

(7 citation statements)

References 8 publications

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“…In this space, some authors describe a different entrapment at the origin of the BR muscle, a tight angle of the BR muscle bers compressing the nerve against the humerus [6]. Our ndings suggest predisposition to entrapment may be affected by the type of tissue surrounding the RN as it glides through this space.…”

Section: Space Between Brachialis and Brachioradialis Musclesmentioning

confidence: 67%

“…The SA is the most common compression site of the RN motor branch (6). In some cases, however, compression may occur due to the medial edge of the extensor carpi radialis brevis muscle or adhesions binding the nerve to the capsule of the radio-humeral joint [23].…”

Section: Space Between Brachialis and Brachioradialis Musclesmentioning

confidence: 99%

“…As the elbow is exed from 0º to 90º, the excursion of the RN is approximately doubled [22]and strain increases by approximately 15% or more [16]. Based on these features, it may be concluded that people with a lot of muscle exertion and/or professions that involve a repetitive movement at the elbow are predisposed to peripheral RN neuropathy [6,10,12,20].…”

Section: Space Between Brachialis and Brachioradialis Musclesmentioning

confidence: 99%

“…The commonly known RN compression syndromes occur in the forearm [5,6], and frequently at the supinator arch (SA), a musculo-aponeurotic furrow that extends from the lateral epicondyle of the humerus to the distal edge of the supinator muscle. At this point, the super cial head of the supinator muscle forms a brous arch [7], which is the most common site of compression of the RN motor branch [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Anatomic Relationship Between the Radial Nerve and the Musculo-Fascial Structures of the Arm and Forearm: A Cadaveric and Sonographic Study

Martínez¹,

Álvarez²,

Pérez‐Bellmunt³

et al. 2020

Preprint

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Background: Radial nerve (RN) compression most commonly occurs at the level of the supinator arch (SA), also called arcade of Fröhse, but other sites of entrapment along the course of the nerve are possible. This study aimed to perform an ultrasound and anatomical examination of these entrapment sites, to provide a solid anatomical base for the differential diagnosis of lateral arm pain, to allow a more precise manual therapy approach. Methods: Nineteen fresh-frozen cadavers were examined, first on ultrasound then on anatomical dissection. Two points of possible RN entrapment were injected with dye under ultrasound guidance: where the RN crosses the lateral intermuscular septum (LIMS) and at the SA. Dissection confirmed the location of the dye at these points and allowed us to describe the relationship of the RN with the adjacent structures; the distances from each of these two points to the lateral epicondyle and the diameter of the RN were also measured. Results: The dye was observed in the correct place in all specimens. We observed a close relationship of the RN with the lateral head of triceps brachialis (LHTB) muscle and the LIMS as it passed through these structures. In both structures, longitudinal aponeurotic extensions were observed. In the anterior compartment of the arm, where the RN glides between the brachialis (B) and brachioradialis (BR) muscles, we observed varying relationships between these three structures (5% had vascular unions, 79% had union of the epimysium, and 16% muscular unions). Finally, in the forearm, just before reaching the SA, we observed a septum that compartmentalize the forearm musculature and created an aponeurotic arch through which the motor branch of the RN passed. Conclusions: Ultrasound study helps correctly identify the RN; the two points identified on US and dissection correlated well. The anatomical findings on the relationship of the RN with its surrounding structures may explain its entrapment.

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Section: Space Between Brachialis and Brachioradialis Musclesmentioning

confidence: 67%

Section: Space Between Brachialis and Brachioradialis Musclesmentioning

confidence: 99%

Section: Space Between Brachialis and Brachioradialis Musclesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Anatomic Relationship Between the Radial Nerve and the Musculo-Fascial Structures of the Arm and Forearm: A Cadaveric and Sonographic Study

Martínez¹,

Álvarez²,

Pérez‐Bellmunt³

et al. 2020

Preprint

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“…Cherchel et al reported that the BM alone can cause entrapment, with no brachialis muscle involvement [ 29 ]. The compressive force was against the humerus and the nerve was covered by aponeurotic tissue.…”

Section: High Radial Nerve Entrapmentmentioning

confidence: 99%

Radial nerve compression: anatomical perspective and clinical consequences

et al. 2023

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The radial nerve is the biggest branch of the posterior cord of the brachial plexus and one of its five terminal branches. Entrapment of the radial nerve at the elbow is the third most common compressive neuropathy of the upper limb after carpal tunnel and cubital tunnel syndromes. Because the incidence is relatively low and many agents can compress it along its whole course, entrapment of the radial nerve or its branches can pose a considerable clinical challenge. Several of these agents are related to normal or variant anatomy. The most common of the compressive neuropathies related to the radial nerve is the posterior interosseus nerve syndrome. Appropriate treatment requires familiarity with the anatomical traits influencing the presenting symptoms and the related prognoses. The aim of this study is to describe the compressive neuropathies of the radial nerve, emphasizing the anatomical perspective and highlighting the traps awaiting physicians evaluating these entrapments.

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Evaluation of the Neurological Conditions of the Elbow, Forearm and Hand

Arianni

2023

The Art of the Musculoskeletal Physical Exam

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The humeral origin of the brachioradialis muscle: An unusual site of high radial nerve compression

Cited by 4 publications

References 8 publications

Anatomic Relationship Between the Radial Nerve and the Musculo-Fascial Structures of the Arm and Forearm: A Cadaveric and Sonographic Study

Anatomic Relationship Between the Radial Nerve and the Musculo-Fascial Structures of the Arm and Forearm: A Cadaveric and Sonographic Study

Radial nerve compression: anatomical perspective and clinical consequences

Evaluation of the Neurological Conditions of the Elbow, Forearm and Hand

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