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Ultrasound
Diagnosis
Musculoskeletal
Neurovascular Abnormalities
Nerve Injury
Nerve Injury
James F. Griffith, MD, MRCP, FRCR
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KEY FACTS

  • Terminology

    • Imaging

      • Diagnostic Checklist

        TERMINOLOGY

        • Synonyms

          • Neurapraxia: Saturday-night palsy, honeymoon syndrome, crutch syndrome, wheelchair syndrome

        • Definitions

          • Neurapraxia = impaired nerve function due to conduction block
            • Praxis = function (Greek)
          • Axonotmesis = "axon cutting" → impaired nerve function due to tear of axon or axons ± sheath
            • Severity variable depending on number of axons torn
          • Neurotmesis = "nerve cutting" → loss of nerve function due to disruption of entire nerve

        IMAGING

        • General Features

          • MR Findings

            • Ultrasonographic Findings

              • Imaging Recommendations

                DIFFERENTIAL DIAGNOSIS

                  PATHOLOGY

                  • General Features

                    • Staging, Grading, & Classification

                      • Gross Pathologic & Surgical Features

                        • Microscopic Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Hollister AM et al: High frequency ultrasound evaluation of traumatic peripheral nerve injuries. Neurol Res. 34(1):98-103, 2012
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Diagnostic Checklist

                                            TERMINOLOGY

                                            • Synonyms

                                              • Neurapraxia: Saturday-night palsy, honeymoon syndrome, crutch syndrome, wheelchair syndrome

                                            • Definitions

                                              • Neurapraxia = impaired nerve function due to conduction block
                                                • Praxis = function (Greek)
                                              • Axonotmesis = "axon cutting" → impaired nerve function due to tear of axon or axons ± sheath
                                                • Severity variable depending on number of axons torn
                                              • Neurotmesis = "nerve cutting" → loss of nerve function due to disruption of entire nerve

                                            IMAGING

                                            • General Features

                                              • MR Findings

                                                • Ultrasonographic Findings

                                                  • Imaging Recommendations

                                                    DIFFERENTIAL DIAGNOSIS

                                                      PATHOLOGY

                                                      • General Features

                                                        • Staging, Grading, & Classification

                                                          • Gross Pathologic & Surgical Features

                                                            • Microscopic Features

                                                              CLINICAL ISSUES

                                                              • Presentation

                                                                • Demographics

                                                                  • Natural History & Prognosis

                                                                    • Treatment

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Hollister AM et al: High frequency ultrasound evaluation of traumatic peripheral nerve injuries. Neurol Res. 34(1):98-103, 2012
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