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246 Possible Causes for Weak Neck Flexion

  • Scapuloperoneal Spinal Muscular Atrophy

    Marked limitation of the neck flexion due to shortness (or atrophy) of posterior nuchal muscles and shortness of the Achilles tendons were early manifestations.[jamanetwork.com] In a family with spinal muscular atrophy, the distinctive clinical features were (1) juvenile onset; (2) scapulohumero-peroneal muscular atrophy and weakness; (3) cardiopathy[jamanetwork.com]

  • Central Core Disease

    He had mild facial weakness. Neck flexion weakness was evident but his upper limb power was normal.[doi.org] She had mild facial weakness and mild weakness of neck flexion (MRC 4/5); upper limb power was normal.[doi.org] She had weakness of neck flexion, shoulder adduction (MRC 4/5), and moderate weakness of the hip flexors, extensors, adductors, and abductors (MRC 3–4/5).[doi.org]

  • Congenital Fiber-Type Disproportion Myopathy

    flexion weakness.[neurology.org] Typically, there was proximal limb girdle weakness, prominent weakness of neck flexion and ankle dorsiflexion, mild facial weakness, and mild ptosis.[research-repository.uwa.edu.au] […] mutation). 90 % of the patients presented with congenital hypotonia, one presented at 13 months with waddling gait and one at 15 years with exertional hypoxia and found to have neck[neurology.org]

  • Distal Myopathy

    Early weakness of neck flexion is present in all patients.[orpha.net] RESULTS: The phenotype of MPD1 was consistent, with initial weakness of great toe/ankle dorsiflexion, and later development of weakness of finger extension and neck flexion[ncbi.nlm.nih.gov] Mild proximal weakness develops more than ten years after the onset of the disease.[orpha.net]

  • Emery-Dreifuss Muscular Dystrophy

    Abstract A woman with early-onset, slowly progressive, humeroperoneal muscle weakness had marked restriction of neck flexion with contracture at the elbows.[ncbi.nlm.nih.gov] The condition is characterized by slowly progressive humeroperoneal muscle weakness; ankle equinus, elbow flexion, and neck extensor muscle contractures; paravertebral muscle[ncbi.nlm.nih.gov]

  • Hyaline Body Myopathy

    The onset ranges between the first to the fifth decade, and the weakness is typically scapuloperoneal, involving neck flexion, shoulder abduction, knee flexion, and ankle[link.springer.com] The onset ranges between the first and the fifth decade, and the weakness is typically scapuloperoneal, involving neck flexion, shoulder abduction, knee flexion, and ankle[link.springer.com]

  • Cervical Spine Fracture

    Neck flexion worsened the weakness in her upper extremities, her radiating neck pain, and upper extremity pain.[ncbi.nlm.nih.gov] Medical treatment included placing her neck in a neutral position, despite her preference for neck flexion.[ncbi.nlm.nih.gov] If weak neck flexion is evident, emphasis should be on developing the sternocleidomastoideus, longus group, and rectus capitis anterior and lateralis.[chiro.org]

  • Cervical Nerve Root Compression

    If weak, test in flexion. Place the head and neck into flexion. If the fingers were weak in neutral, it signified the presence of root compression.[dynamicchiropractic.com] If weak neck flexion is evident, emphasis should be on developing the sternocleidomastoideus, longus group, and rectus capitis anterior and lateralis.[chiro.org] Motor weakness: Right triceps muscle. Right wrist flexion. Reflexes decreased: Right triceps reflex.[ispub.com]

  • Monomelic Amyotrophy

    Application of a cervical collar to minimize neck flexion prevents progressive muscular weakness in an early stage of the disease. (Internal Medicine 39: 283-290, 2000)[jstage.jst.go.jp] The forward displacement of the posterior dura of the lower cervical dural canal during neck flexion has been postulated to lead to lower cervical cord atrophy with asymmetric[ncbi.nlm.nih.gov] The condition predominantly affects Asian males and is thought to be secondary to spinal cord compression during neck flexion, because of a forward displacement of the posterior[ncbi.nlm.nih.gov]

  • Respiratory Muscle Paralysis

    Weak neck flexion also correlates with diaphragmatic dysfunction.[myasthenia.org] However, generalized muscle weakness in MG patients can at times mask accessory muscle usage.[myasthenia.org] Paradoxical breathing and inability to lie supine or speak more than a few words are indicators of diaphragm weakness.[myasthenia.org]

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