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Open research questions in Peripheral Nerve Disorders

61 unresolved questions extracted from the limitations and future-work sections of 340 Peripheral Nerve Disorders papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The study is limited to a single case report, - The incidence of ulnar nerve variations may be underreported, - Preoperative imaging practices are used selectively, not routinely.

    Surgical implications of an anteriorly positioned ulnar nerve of unknown etiology at the elbow: illustrative case · 2026 · DOI

  • The incidence of ulnar nerve variations may be underreported, - There is a need for further studies on the implications of ulnar nerve variations for surgical decompression.

    Surgical implications of an anteriorly positioned ulnar nerve of unknown etiology at the elbow: illustrative case · 2026 · DOI

  • There is a lack of awareness about the presence of accessory ossicles as a cause of cubital tunnel syndrome. There is a need for more research on the diagnosis and treatment of cubital tunnel syndrome caused by accessory ossicles.

    Os subepicondylare mediale ossicle as a cause for cubital tunnel syndrome: A case report · 2026 · DOI

  • Managing pain and improving functional outcomes after carpal tunnel release surgery can be challenging. Vitamin D supplementation may have potential benefits, but its effects on musculoskeletal and neurological health are not well understood. The study's findings highlight the need for further research into the effects of vitamin D supplementation on musculoskeletal and neurological health.

    Functional and Symptomatic Effects of Vitamin D Supplementation Following Carpal Tunnel Release: A Randomized Controlled Trial · 2026 · DOI

  • The diagnosis of CTS can be challenging due to the variability in symptoms and functional limitation. The use of patient-reported outcomes, such as the BCTQ, can be limited by factors such as age, sex, and education level.

    Clinical construct validity and subgroup stability of the Romanian version of the Boston Carpal Tunnel Questionnaire in nerve-conduction-confirmed carpal tunnel syndrome – a cross-sectional study · 2026 · DOI

  • Recurrence of symptoms after surgery has been reported in 1-31% of patients. Incomplete nerve recovery remains unresolved. There is a need for alternative treatments to improve outcomes for patients with CTS.

    Comparison of Clinical and Electromyographic Outcomes of Amnion–Methylcobalamin in Carpal Tunnel Release · 2026 · DOI

  • Delayed diagnosis due to lack of awareness of Hansen's disease as a cause of peripheral neuropathy. Irreversible neurological deficits if left untreated. Limited access to diagnostic and treatment facilities in endemic areas.

    Chronic ulnar nerve thickening with elbow mass: Imaging features suggestive of Hansen’s disease · 2026 · DOI

  • The effects of hand nerve repair on digit maps in humans are not well understood. The relationship between altered digit maps and functional impairments is not well established. The study aims to address these gaps in knowledge.

    Cutting a nerve of the hand alters the organization of digit maps in primary somatosensory cortex · 2026 · DOI

  • The relationship between cyst localization, cyst size, and associated pathologies remains unclear. There is a need for further research on the epidemiology and biomechanics of wrist GCs. The study aims to address this gap by investigating the association between cyst localization and cyst size, as well as accompanying pathologies.

    Wrist Ganglion Cyst Localization in Relation to Cyst Size and Associated Injuries: An MRI-Based Retrospective Study · 2026 · DOI

  • Endoscopic CTR carries a modestly higher revision rate, while long-term data for ultrasound-guided techniques remain lacking.

    A Mechanism-Based Classification and Review of Endoscopic and Ultrasound-Guided Carpal Tunnel Release · 2026 · DOI

  • The antegrade cutting, pinhole scalpel, and needle-knife have more limited evidence.

    A Mechanism-Based Classification and Review of Endoscopic and Ultrasound-Guided Carpal Tunnel Release · 2026 · DOI

  • These techniques are, however, destructive and struggle to capture the peripheral nerves over larger areas, such as the pelvis, and their trajectories thus remain elusive.

    Innervation of the anal canal revisited through micro‐ <scp>CT</scp> imaging · 2026 · DOI

  • Carpal tunnel syndrome (CTS) commonly coexists with SjD; however, the efficacy of standard CTS treatments in this population remains insufficiently characterized.

    Discordance Between Ultrasonographic and Clinical Outcomes After Corticosteroid Injection in Sjögren’s Disease-Associated Carpal Tunnel Syndrome · 2026 · DOI

  • Peripheral neuropathy constitutes a prevalent, albeit underrecognized, extraglandular manifestation of Sjögren’s disease (SjD).

    Discordance Between Ultrasonographic and Clinical Outcomes After Corticosteroid Injection in Sjögren’s Disease-Associated Carpal Tunnel Syndrome · 2026 · DOI

  • Based on the gaps and heterogeneities identified in this review, we suggest several key directions for future research. First, imaging-based validation studies, such as MRI or ul- trasound, are necessary to correlate our cadaveric findings with in vivo anatomy. Second, genetic investigations are also vital to explore potential developmental and hereditary fac- tors underlying these anatomical differences. Furthermore, combining anatomical data with clinical studies would help clarify the clinical importance of these variations and guide safer, more personalized procedural planning.

    Anatomical variation of the sciatic nerve division in the cadaver studies: a systematic review and meta-analysis · 2026 · DOI

  • There is a need to understand the biomechanical and morphological foundations of cubital tunnel syndrome. The pathogenesis of cubital tunnel syndrome is not fully understood.

    Biomechanical and morphological foundations of the pathogenesis of cubital canal syndrome · 2026 · DOI

  • The arcade of Struthers is a debated anatomical structure. The clinical significance of the arcade of Struthers is unclear. The relationship between the arcade of Struthers and ulnar nerve compression is complex.

    Revisiting the arcade of Struthers: a cadaveric study to explore this debatable anatomical structure as a possible site causing chronic compressive changes in the ulnar nerve · 2026 · DOI

  • The existence and relevance of the arcade of Struthers as a potential site for ulnar nerve compression is debated. There is a need for detailed morphometric and histological analysis of the arcade of Struthers.

    Revisiting the arcade of Struthers: a cadaveric study to explore this debatable anatomical structure as a possible site causing chronic compressive changes in the ulnar nerve · 2026 · DOI

  • The study had a small sample size of 70 patients. The follow-up period was limited to 12 weeks, which may not be sufficient to capture long-term effects. The study did not investigate the effects of different doses or durations of vitamin D supplementation.

    Functional and Symptomatic Effects of Vitamin D Supplementation Following Carpal Tunnel Release: A Randomized Controlled Trial · 2026 · DOI

  • The diagnosis of piriformis syndrome remains contentious in the absence of a universally accepted gold-standard test. The study has a small sample size of three patients.

    Integrated Role of Musculoskeletal Ultrasound in Piriformis Syndrome: A Case Series · 2026 · DOI

  • The diagnosis of piriformis syndrome is challenging due to its overlap with other causes of sciatica. There is a need for a universally accepted gold-standard test for diagnosing piriformis syndrome.

    Integrated Role of Musculoskeletal Ultrasound in Piriformis Syndrome: A Case Series · 2026 · DOI

  • There is a need to use Upper Limb Neurodynamic Tests with other diagnostic tests due to limited specificity and overall diagnostic accuracy.

    What evidence supports the validity of Upper Limb Neurodynamic Tests for identifying Cervical Radiculopathy and Carpal Tunnel Syndrome? · 2026 · DOI

  • There is no specific treatment option for PTS. Current treatment recommendations for PTS have limited effectiveness. The underlying etiopathogenesis of PTS has not been fully understood yet.

    Unlocking rehabilitation in Parsonage-Turner syndrome: A case report on the benefits of cervical epidural steroid injection · 2026 · DOI

  • There is a lack of research on the relationship between peripheral nerve conduction and academic performance. Prior studies have focused on the relationship between nerve conduction velocity and intelligence, but not specifically on academic performance.

    The nerve conduction variables in relation to academic performance among male medical students at King Saud bin Abdulaziz University for Health Sciences: an exploratory observational study · 2026 · DOI

  • There is a lack of emphasis on the persistent median artery as a potential cause of carpal tunnel syndrome. There is a need for more research on the diagnosis and treatment of carpal tunnel syndrome caused by a persistent median artery.

    Persistent Median Artery as a Cause of Carpal Tunnel Syndrome? A Case Report Highlighting the Indispensable Role of Ultrasonography in Diagnosis · 2026 · DOI

Most-cited papers in Peripheral Nerve Disorders

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61 open questions have been extracted from the limitations and future-work passages of 340 Peripheral Nerve Disorders papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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