An aberrant anatomic variation along the course of the ulnar nerve above the elbow with coexistent cubital tunnel syndrome

Chow, James C.Y.; Papachristos, Athanasios; Ojeda, Alvaro C.

doi:10.1002/ca.20351

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…Gonzalez et al [ 15 ] found this branch leaving the ulnar nerve above the epicondylar level in 5.13% (2/39), Paulos et al [ 31 ] in 20% (4/20), and Ng et al [ 29 ] in 30% (3/10). Two case reports describing such variable branch complicating surgery of the ulnar nerve exist to our knowledge [ 8 , 19 ]. This first branch of the ulnar nerve supplies the FCU in 90%, the flexor digitorum profundus muscle in 5%, and both these muscles in 5% of cases [ 37 ].…”

Section: Resultsmentioning

confidence: 99%

Anatomical variants complicating the posterior approaches towards the elbow joint

et al. 2023

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Introduction Anatomical variants observed during the posterior approach to the elbow joint require special attention due to their clinical relevance. We aim to present a compendious review of described variants potentially encountered during the posterior approach towards the elbow joint to the experts in the elbow surgery. Methods A narrative review of surgical and anatomical textbooks, as well as search of scientific databases was carried out. Results Variability of the subcutaneous nerves is important during incision planning. Accessory muscles such as dorsoepitrochlearis, chondroepitrochlearis, epitrochleoanconeus, subanconeus or supernumerary flexor carpi ulnaris may confuse even the senior surgeon during the dissection and possibly complicate the fracture reduction. Some bony variants such as supratrochlear foramen may lead to fracture or possibly interfere with the osteosynthesis placement. Accessory bones are also present in the region of the elbow joint. Those situated intra-articular may present with symptoms. Conclusion Many variants can be encountered in the area of the elbow joint and their knowledge is essential to truly understand its anatomy. The presented review enables easier orientation in the current literature with the aim on the posterior approach towards the elbow joint.

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Section: Resultsmentioning

confidence: 99%

Anatomical variants complicating the posterior approaches towards the elbow joint

et al. 2023

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“…A more likely scenario is an aberrant course or branching of the ulnar nerve. There has been one report in the literature of an anatomic variation in which the ulnar nerve produced a branch above the elbow, which continued distally without penetrating the fascia of the muscles of the forearm [ 10 ]. The patient’s clinical course could be explained by an insult to an abnormally superficial branch of the ulnar nerve that continues distally to innervate its usual sensory areas.…”

Section: Discussionmentioning

confidence: 99%

Acute Ulnar Neuropathy After Uncomplicated Contraceptive Implant Insertion: A Case Report

Hussain¹,

Holland²

2022

Cureus

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To avoid the nerves and blood vessels of the upper extremity, the subdermal contraceptive implant Nexplanon (N.V. Organon, Oss, The Netherlands) is inserted into the subdermis at a location 8-10 cm proximal to the medial epicondyle of the humerus and 3-5 cm posterior to the groove between the biceps and triceps muscles. Ulnar nerve injury is a known but extremely rare complication associated with implant insertion. Risk factors for ulnar nerve insult include inadvertent deep insertion, device migration, and an underweight patient. This is a case report of an obese 40-year-old female who presented four days after uncomplicated contraceptive implant insertion with symptoms consistent with an acute ulnar neuropathy, despite the implant being located in the proper superficial location. Symptoms resolved soon after implant removal. This unique presentation may be explained by the aberrant anatomy of the ulnar nerve. It is important for clinicians to be able to recognize and treat this rare complication of contraceptive implant insertion, even in a patient who possesses no risk factors for ulnar nerve injury.

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“…Anatomical variations of the ulnar nerve consisting of irregular branches of the nerve or irregular communication between the ulnar nerve / its branches and other nerves of the hand have been documented in previous studies. [7][8][9] However, in the available literature, in terms of both its atypical formation and irregular contact with the neighbouring nerves, not much importance has been levied on the UN variations. In the present study, the peculiar aberrant formation of the UN was noted by the remarkable contribution of the lateral cord in three of the 40 upper limbs, which is correlated with the Emamhadi et al study.…”

Section: Discussionmentioning

confidence: 99%

“…6 Although anatomical variations of the ulnar nerve have been documented in several studies, they most frequently relate to the anatomical branch or irregular contact of the ulnar nerve with other nerves in the arm or hand. [7][8][9] The present research was therefore conducted to determine the variance and possible clinical consequences of the ulnar nerve.…”

Section: Introductionmentioning

confidence: 99%

Variations of the ulnar nerve and it’s clinical implications

Munjamkar¹

2021

IJCAP

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Background: The ulnar nerve (UN) is a branch of the roots of the C8 and T1 nerves and arises from the brachial plexus medial cord. The formation, course, and distribution of this nerve is subject to a variety of variations. The present research was therefore conducted to describe the anatomical variation of the ulnar nerve and its possible clinical consequences. Materials and Method: The research was performed on 40 dissected upper limb specimens (20 right and 20 left) from the Department of Anatomy, Shri Shankaracharya Institute of Medical Sciences, Bhilai, of both sexes of the Indian population. Every aberrant formation and/or contact in relation to the ulnar nerve has been carefully examined. Results: Four out of 40 upper limbs had variations linked to the ulnar nerve, with an occurrence of 10%. Among these four limbs, variance in ulnar nerve development was noted in three limbs, while irregular contact with the neighbouring nerve was found in one limb. Conclusion: The ordinary sensory-motor activity could be affected by an unusual UN relationship with its neighboring nerves and its irregular formation. Knowledge of the UN's anatomical variations is therefore important for clinicians to consider the nature of ulnar nerve neuropathy-related complications.

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An aberrant anatomic variation along the course of the ulnar nerve above the elbow with coexistent cubital tunnel syndrome

Cited by 4 publications

References 8 publications

Anatomical variants complicating the posterior approaches towards the elbow joint

Anatomical variants complicating the posterior approaches towards the elbow joint

Acute Ulnar Neuropathy After Uncomplicated Contraceptive Implant Insertion: A Case Report

Variations of the ulnar nerve and it’s clinical implications

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