A Rare Anomaly of the Abductor digiti minimi Muscle of the Foot

Kopuz, Cem; Tetik, Süleyman; Ozbenli, Sehnaz

doi:10.1159/000016655

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Persistence of some muscle primordia in the EDB might result in supernumerary heads or accessory fasciculi. Absence of one of the actual heads may be due to the disappearance of some muscle primordia which otherwise persist and give rise to the usual four-headed pattern [15]. Knowledge relating to the presence of extra tendons or absence of usual tendons is clinically important in plastic and orthopedic surgeries involving EDB tendon transfer.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the morphometry and variations in the extensor digitorum brevis muscle: an anatomic guide for muscle flap and tendon transfer surgical dissection

et al. 2013

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The extensor digitorum brevis muscle (EDB) is a practical option for use as an island flap or free flap when reconstructing soft tissue defects in the ankle as well as in the entire lower limb. It is frequently used to correct crossover toe deformity and other painful toe disorders. We evaluated the morphometry of the EDB in 44 formalin-fixed limbs. Length and width of the muscles were measured. Surface area was calculated as the product of length and width of the muscle. The length of each tendon was also measured from its origin to the point of distal attachment. Presence of any additional tendons was noted. Mean length, width, and surface area of the muscle were 7.39±0.71 cm, 4.1±0.37 cm, and 30.5±4.78 cm2 on the right side and 7.2±0.84 cm, 3.9±0.37 cm, and 28.4±5.35 cm2 on the left side, respectively. Morphometry of the tendons revealed that the tendon of the great toe had the highest mean length (9.5 cm) and the tendon of the fourth toe had the lowest mean length (6.3 cm). Four of the limbs studied (9.09%) had only three tendons. Three of the limbs studied (6.81%) had five tendons, and in one exceptional case (2.27%), six tendons were detected. These observations have significant value and are applicable to plastic and orthopedic surgery.

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Section: Discussionmentioning

confidence: 99%

Analysis of the morphometry and variations in the extensor digitorum brevis muscle: an anatomic guide for muscle flap and tendon transfer surgical dissection

et al. 2013

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“…Another accessory muscular slip was seen to extend between the fifth metatarsal bone and the proximal phalanx. 5 The most reliable treatment modality in osteomyelitis is debridement and muscle flap coverage.…”

Section: Discussionmentioning

confidence: 99%

Clinico-anatomical considerations of unilateral bipartite abductor digiti minimi muscle of the foot: a case report

Nayyar¹

2010

Anatomy

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The abductor digiti minimi pedis, as the name suggests, causes abduction of the fifth toe and braces the lateral longitudinal arch. The muscle takes origin from the medial and lateral processes of the calcaneal tuberosity, the plantar aponeurosis and the intermuscular septum, and inserts at the lateral surface of the base of proximal phalanx of the fifth toe.1 It derives the innervation from the lateral plantar nerve.The sole ulceration is an ominous complication of leprosy, resulting from the neurovascular malfunctions relating to the disease. A sound working knowledge of anatomy regarding the muscle and neurovascular bundle is vital in order to perform reconstructive operations on the foot. The importance of using abductor digiti minimi myocutaneous flap is paramount and is being widely used in covering defects such as lepromatous ulcers. AbstractWound surgery of the heel may prove to be a difficult and time consuming procedure. This is owing to the weight bearing function of the heel. Defects in this region may be reliably covered by myocutaneous flaps. We present an interesting observation of an accessory belly of abductor digiti minimi (ADM) in the right foot of an adult male cadaver. The two bellies of ADM were placed in two planes -superficial and deep. The lateral belly was superficial and lateral in comparison to the medial belly which was deep and more medially displaced. Additionally, the morphology of the two bellies varied with the lateral belly being musculotendinous while the medial belly was tendinous predominantly. The clinical and surgical importance of the additional belly of the ADM is discussed specially in surgical procedures of plantar aspect of the foot. A preoperative radiological assessment of the foot to be operated upon may provide the necessary information and may detect these muscular anomalies. Utilizing these variations to their benefit during operation will shorten the procedure time and may reduce postoperative risks and complications. This anomaly here presented seldom cited in literature may be used to alert the foot surgeons and radiologists so that they may plan their procedures accordingly.

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Additional muscular slip of the flexor digitorum longus muscle to the fifth toe

et al. 2018

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Despite the fact that there are numerous reports on muscular variations in the sole of the foot, routine dissection in a formaldehyde-fixed cadaver revealed an accessory flexor digiti quinti muscle, which to the best of our knowledge is a very unusual variant. This was in the form of a slender, 38 mm long muscular slip, with a proximal and distal tendon extending from the common flexor digitorum longus tendinous plate out to the distal phalanx of the fifth toe. An associated finding was the absence of the musculotendinous portion of the flexor digitorum brevis to the same toe. A developmental explanation for this variation is presented. Clinical implications with regard to this anatomical condition may result in clawing of the fifth toe.

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A Rare Anomaly of the Abductor digiti minimi Muscle of the Foot

Cited by 4 publications

References 5 publications

Analysis of the morphometry and variations in the extensor digitorum brevis muscle: an anatomic guide for muscle flap and tendon transfer surgical dissection

Analysis of the morphometry and variations in the extensor digitorum brevis muscle: an anatomic guide for muscle flap and tendon transfer surgical dissection

Clinico-anatomical considerations of unilateral bipartite abductor digiti minimi muscle of the foot: a case report

Additional muscular slip of the flexor digitorum longus muscle to the fifth toe

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