Accessory head of the extensor carpi radialis longus muscle merging with extensor carpi radialis brevis muscle

Yang, Kiwook; Choi, In‐Jang; Lee, Jae-Ho

doi:10.1007/s00276-018-2035-z

Cited by 5 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, this radial portion divides into superficial and deep portions. Extensor digitorum, extensor carpi ulnaris, and extensor digiti minimi muscles are originated from the superficial portion while abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus and extensor indicis muscles are originated from the deep portion [11,12]. Developmental defect in different stages of gestation is one of the reasons of the anatomical variations.…”

Section: Discussionmentioning

confidence: 99%

An Extensor Digitorum Muscle for Index Finger Originated from the Extensor Carpi Radialis Brevis

Kim

Lee

2020

Anat Biol Anthropol

Self Cite

View full text Add to dashboard Cite

The anomalous variations in the extensor carpi radialis brevis (ECRB) and extensor digitorum (ED) muscles of the forearm have been previously reported in the literature. The present article reported an anomalous variation of the ECRB and ED muscles in the forearm. We found an accessory muscle originated from the medial side of the ECRB muscle and inserted into the base of second metacarpal bone. And the ED muscle divides into three distinct tendons without the tendon of index finger. This case is a first report of the variations of ECRB and ED muscle in Korean cadaver. Knowledge of this variation is important to avoid surgical complications and to prevent diagnostic problems. Its embryological and clinical significances were discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

An Extensor Digitorum Muscle for Index Finger Originated from the Extensor Carpi Radialis Brevis

Kim

Lee

2020

Anat Biol Anthropol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Accessory tendons and muscle heads within the ECRL [ 7 , 14 ], as well as ECRB agenesis [ 10 ], have been previously reported. However, this case report is unique in that it describes an accessory tendon arising directly from ECRL and inserting on the dorsal aspect of the base of the third metacarpal, along with ECRB agenesis bilaterally.…”

Section: Discussionmentioning

confidence: 99%

“…Apart from these three well-documented muscular variations, others have been reported in which additional muscle heads and tendons originate directly from either the ECRL or ECRB [ 13 ]. In one case, the ECRL exhibited three muscular heads (lateral, intermediate, and medial) unilaterally, with the medial head joining ECRB [ 14 ]. Additionally, a bilateral variation in the ECRL was reported, in which an accessory muscle belly arose from the ECRL before inserting on the first metacarpal [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

A Unique Bilateral Variation of the Extensor Carpi Radialis Longus: A Case Report

Coello,

Coomar,

Campbell

2024

JFMK

View full text Add to dashboard Cite

A novel combination of variations involving the extensor carpi radialis (ECR) muscle group was observed bilaterally in a 75-year-old female cadaver during routine dissection. An accessory tendon was observed arising from the extensor carpi radialis longus (ECRL) and traveling with the primary tendon through the second compartment of the extensor retinaculum. While the primary tendon inserted on the base of the second metacarpal, as is typical of ECRL, the accessory tendon inserted on the base of the third metacarpal. This insertion is typical of the extensor carpi radialis brevis (ECRB) muscle. Additionally, bilateral agenesis of the ECRB was reported. Thirty-two additional forearms were assessed for similar variations, with none being observed. This combination of variations adds to the literature regarding the ECR muscle group, while also being of interest to clinicians, specifically regarding tendon reconstructive procedures as well as accessing the distal radial artery via the anatomical snuffbox.

show abstract

“…ECRT take origin from the common extensor origin between ECRL and extensor digitorum and inserted on the second and third metacarpal. In the literature (Table 1), were described other variations of ECRL, with normal origin on the lateral supracondylar ridge and then trifurcated in three heads, lateral and intermediated heads with insertion on the base of the second metacarpal bone and medial head with insertion which merge with ECRB muscle [22]. Yoshida [23] describe the muscle bellies of ECRL and ECRB with laminar disposition.…”

Section: Discussionmentioning

confidence: 99%

An unusual case of unilateral supernumerary extensor carpi radialis muscle

et al. 2019

View full text Add to dashboard Cite

An uncommon anatomical variant of muscle that can be considered as a supernumerary extensor carpi radialis muscle was found during the dissection of the forearm region. The identified extensor carpi radialis muscle has origin on the lateral supraepicondylar ridge of the humerus, and an unusual insertion on the tubercle of the scaphoid bone. The presence of this supernumerary muscle may cause diagnostic errors in the forearm region, and can produce a debilitating pain syndrome by secondary compression of adjacent nerves, vessels or tendons due to its course along the anterior compartment of the forearm. (Folia Morphol 2019; 78; 4: 888-892)

show abstract

Accessory head of the extensor carpi radialis longus muscle merging with extensor carpi radialis brevis muscle

Abstract: Knowledge of the variations of the ECRL is important for surgeons because the presence of the ECRL variations increases the incidence of iatrogenic injuries during surgery and invasive procedures.

Cited by 5 publications

References 7 publications

An Extensor Digitorum Muscle for Index Finger Originated from the Extensor Carpi Radialis Brevis

An Extensor Digitorum Muscle for Index Finger Originated from the Extensor Carpi Radialis Brevis

A Unique Bilateral Variation of the Extensor Carpi Radialis Longus: A Case Report

An unusual case of unilateral supernumerary extensor carpi radialis muscle

Contact Info

Product

Resources

About