The Extensor Retinaculum of The Wrist: An Anatomical and Biomechanical Study

Palmer, Andrew K.; Skahen, James R.; Werner, Frederick W.; Glisson, Richard R.

doi:10.1016/s0266-7681(85)80006-1

Cited by 65 publications

(24 citation statements)

References 3 publications

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“…Previous anatomic descriptions have noted the retinaculum to course obliquely and distally from the radial to the ulnar aspect of the wrist, becoming thicker and wider as it passed ulnarward. A second fascial component has also been described coursing distally from ulnar to radial, thus creating a ''fascial V'' (Palmer et al, 1985), but the incidence of this retinacular extension has not been reported.…”

Section: Discussionmentioning

confidence: 99%

“…Less attention has been given to anatomic variability surrounding the arrangement of the 5th compartment retinaculum and distal extensions of this retinaculum into the dorsum of the hand (Palmer et al, 1985;Seradge et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…EDM tenosynovitis is rare when compared to de Quervain's tenosynovitis or ECU tenosynovitis (Kaplan and Hunter, 1984;Palmer et al, 1985;Gonzalez et al, 1995b;Seradge et al, 1999), but previous investigators have suggested that the cause of EDM tenosynovitis may be related to retinacular variability (Seradge et al, 1999). The purpose of this study is to describe the variations of the 5th dorsal compartment and corresponding variations within the EDM tendon structure noted in a series of cadaver dissections.…”

Section: Introductionmentioning

confidence: 99%

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Anatomic variation of the 5th extensor tendon compartment and extensor digiti minimi tendon

et al. 2007

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Anatomic variation within the 5th extensor compartment may contribute to the development of tenosynovitis and limit the usefulness of the extensor digiti minimi (EDM) for tendon transfer. The purpose of this study was to assess the anatomic variation of the EDM tendon and its surrounding retinaculum, with particular attention to anatomical variation between specimens. Forty-one fresh cadaver hands were dissected. The length of the 5th compartment retinaculum was noted. The incidence of an intercompartmental septum was noted in each specimen as well as the type of tendinous attachments present between the EDM and extensor digitorum communis (EDC) tendons. The presence and length of any accessory retinacular bands distal to the edge of proper extensor retinaculum was also noted. Only one specimen contained a single EDM tendon, while 71% (n = 29) of specimens contained two slips and 23% (n = 9) had three slips; 24% (n = 10) of EDC tendons had no slip to the small finger, while 61% (n = 25) of specimens had a single slip to the small finger. The EDC's contribution to the small finger was found to be an independent tendon in 42% of cases (n = 17), while 34% (n = 14) of specimens were found to have a common EDC slip, which branched to both the ring and small finger. Three EDM tendons divided distal to the extensor retinaculum, while the remaining EDM tendons divided beneath or proximal to the extensor retinaculum. Seventy-three percent (n = 30) of the specimens had an accessory retinacular band surrounding the EDM tendon identified at the base of the 5th metacarpal. Eighty-eight percent (n = 36) of hands had a septum between the EDM slips. The surgeon should be aware of variability within the 5th dorsal compartment in cases of trauma and in cases of tendon transfer. In our series 30 of 41 specimens were noted to contain an accessory dorsal retinacular band surrounding the EDM and 36 specimens were noted to contain a septum within the 5th compartment. The presence of an accessory retinacular band surrounding the EDM at the level of the 5th metacarpal base is an anatomic finding that requires further investigation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anatomic variation of the 5th extensor tendon compartment and extensor digiti minimi tendon

et al. 2007

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“…2,4,5,[8][9][10] However, most previous studies have focused on the soft tissue structures surrounding the ECU tendon, 2,10) which is maintained within a bony groove of the ulna by the retinaculum and subsheath. If the subsheath is torn, stripped, or attenuated, ECU subluxation or dislocation can occur.…”

Section: Discussionmentioning

confidence: 99%

Anatomical Variations of the Extensor Carpi Ulnaris Groove: A New Computed Tomography-based Evaluation

Kohyama

Tanaka

Okano

et al. 2017

J Hand Surg Asian-Pac Vol

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INTRODUCTIONThe morphology of the extensor carpi ulnaris (ECU) groove is likely related with the pathology of ECU-related injuries. The fibro-osseous ECU subsheath reportedly prevents subluxation of the ECU tendon and works with the extensor retinaculum to prevent tendon bowstring. 1,2)Volar subluxation of the tendon during supination is prevented by the transverse fibers of the medial wall of the subsheath.3) A shallow ECU groove might lead to ECU tendon instability and subluxation, and deepening the ECU groove 2-3 mm with a power bur has been recommended to improve the congruency of the tendon and groove.3-5) However, there have been few studies regarding the ECU groove morphology, 6,7) and the ideal morphology of the ECU groove remains unknown. Furthermore, the shape of the ECU groove has not been discussed previously. The purpose of this study was to evaluate the morphology of the ECU groove, including Background: This study aimed to develop a classification that precisely describes the extensor carpi ulnaris (ECU) groove morphology.

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“…Based on a biomechanical study, there will be no increase in bowstringing of the extensor tendons if less than one centimeter of retinaculum is released [19].…”

Section: Discussionmentioning

confidence: 99%

Acute true trigger wrist following partial extensor carpi radialis brevis tendon rupture

2011

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Triggering in association with movements of the wrist or "true trigger wrist" due to the extensor tendon is rare. There are only few case reports in literature, but none were associated with the acute partial tendon rupture. We present a case of true trigger wrist originating from partial rupture of extensor carpi radialis brevis tendon (ECRB). In contrast to the other reports, the interval between an initial injury and development of triggering was short because the partial tendon rupture was bunching and forming a nodule. The triggering was attributed to the snapping of the nodule under the extensor pollicis longus tendon (EPL).

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The Extensor Retinaculum of The Wrist: An Anatomical and Biomechanical Study

Cited by 65 publications

References 3 publications

Anatomic variation of the 5th extensor tendon compartment and extensor digiti minimi tendon

Anatomic variation of the 5th extensor tendon compartment and extensor digiti minimi tendon

Anatomical Variations of the Extensor Carpi Ulnaris Groove: A New Computed Tomography-based Evaluation

Acute true trigger wrist following partial extensor carpi radialis brevis tendon rupture

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