Anatomical relationship between the sagittal band and extensor tendon of the thumb: a focus on variations of the extensor pollicis brevis tendon insertion

Takahashi, Ryo; Ohmichi, Yusuke; Hatayama, Naoyuki; Hirai, Shuichi; Naito, Makoto; Nakano, Takashi

doi:10.1007/s12565-020-00528-0

Cited by 5 publications

(7 citation statements)

References 24 publications

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“…The diversity in the EPB is widely known; as Dawson stated, “The EPB has so many anatomical variations that deviations from the norm are not considered exceptions” [ 5 ]. The insertion sites of the EPB tendon reported thus far include the proximal phalanx, distal phalanx, hood, first metacarpal, or a combination thereof [ 1 , 2 , 5 , 10 - 16 ] (Table 1 ). In addition, variations other than the insertion sites include EPB defects and accessory/abnormal tendons.…”

Section: Discussionmentioning

confidence: 99%

“…During extension of the thumb, the extensor pollicis longus (EPL), extensor pollicis brevis (EPB), and extensor hood all originate from the metacarpophalangeal (MP) to the interphalangeal (IP) joint, forming a complex [ 1 - 2 ]. Among the elements that make up this complex, the EPB is known to have a large number of variations [ 3 - 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, recent studies have revealed that limb muscles and tendons have different ontogenetic processes [ 8 - 9 ]. Although there are many reports on the running of the EPB tendons, the classification of tendon insertions differs among reports and is not unified [ 1 - 3 , 5 , 10 - 16 ]. Thus, the present study aimed to observe the running and insertion of the EPB tendons in detail and examine their classification from the perspective of the process of tendon development.…”

Section: Introductionmentioning

confidence: 99%

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Variations in the Extensor Pollicis Brevis-Extensor Pollicis Longus Tendon Complex

Nishimura,

Hashimoto,

Yano

et al. 2024

Cureus

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Despite several reports on the running of the extensor pollicis brevis (EPB) tendons, the classification of tendon insertions remains ununified due to differences in reports. This diversity in tendon patterning is attributed to the process of tendon development. In this study, we assessed the running of the EPB tendons of 44 cadaver hands fixed in ethanol/formalin in detail and examined the existing classification method. The specimens were obtained from 15 women and seven men, with an average age of 86 years. Consistent with previous reports, we observed a wide diversity in the running of the EPB tendons. Further, we found that EPB tendon insertions showed diverse variations in the proportion and running of fibers, making it difficult to classify them into independent patterns. It is speculated that the EPB tendon develops through a different process than that of the muscle body of the EPB and that the entire muscle-tendon module of the EPB is evolving. The diversity of the EPB tendons observed in this study may reflect the ongoing process of evolution. In clinical practice, a wide variation in the running of the EPB tendons should be considered.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Variations in the Extensor Pollicis Brevis-Extensor Pollicis Longus Tendon Complex

Nishimura,

Hashimoto,

Yano

et al. 2024

Cureus

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“…The ITS presence may also represent a factor of conservative treatment's failure [14,23]. The treatment with steroid injection into the FEWC may often have unsatisfactory results up to 38% [46]. Due to the ITS existence, the injection may in ltrate the more super cial compartment and not the usually smaller and deeper one, containing the EPB tendon [46].…”

Section: Discussionmentioning

confidence: 99%

“…The treatment with steroid injection into the FEWC may often have unsatisfactory results up to 38% [46]. Due to the ITS existence, the injection may in ltrate the more super cial compartment and not the usually smaller and deeper one, containing the EPB tendon [46]. The use of US has greatly contributed to the evaluation of sub-compartmentalization and in the e cacy of conservative treatment, as it provides great injection guidance [14, 22-25, 28, 37].…”

Section: Discussionmentioning

confidence: 99%

The first extensor wrist compartment variants. Clinical considerations of the De Quervain’s disease

Kotzias

Koutserimpas

Chrysikos

et al. 2023

Preprint

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Purpose The first extensor wrist compartment (FEWC) displays significant variants. The current review highlights all possible variants that may be associated with the occurrence and pathophysiology of de Quervain’s tenosynovitis.Methods A meticulous online search in PubMed and MEDLINE databases was conducted to evaluate all FEWC variants, including: 1. the presence of an intertendinous septum (ITS), 2. the number of tendinous slips of the abductor pollicis longus (APL) and the extensor pollicis brevis (EPB) muscles, 3. their distal insertions and 4. the presence of a bony ridge within the FEWC.Results A total of 3878 (1277 cadaveric and 1296 de Quervain patients’) wrists were included. An ITS was identified in 42.9% wrists (47% of the patients’ compared to 39.3% of the cadavers’, p < 0.0001). Cadaveric wrists presented 2 or more APL tendinous slips in a significant higher percentage (92.5%) compared to de Quervain patients’ wrists (74.5%, p < 0.0001). Regarding EPB, de Quervain patients’ wrists had a single slip in 93% and 2 or more slips in 3.6%, compared to cadaveric wrists that the 87% had a single slip (p = 0.0007) and 2 or more slips in 11% (p < 0.0001). A bony ridge over the radial styloid process was recorded in 58.9% of the cadaveric wrists compared to 17.8% of the patients’ wrists (p < 0.0001).Conclusions Remarkable diversity concerning the structures within the FEWC is reported. The presence of an ITS dividing the FEWC and a single EPB slip are more likely to be found in patients with de Quervain’s disease.

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Strecksehnenverletzungen des Daumens

et al. 2021

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Anatomical relationship between the sagittal band and extensor tendon of the thumb: a focus on variations of the extensor pollicis brevis tendon insertion

Cited by 5 publications

References 24 publications

Variations in the Extensor Pollicis Brevis-Extensor Pollicis Longus Tendon Complex

Variations in the Extensor Pollicis Brevis-Extensor Pollicis Longus Tendon Complex

The first extensor wrist compartment variants. Clinical considerations of the De Quervain’s disease

Strecksehnenverletzungen des Daumens

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