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    Foot Drop - Unilateral

    🗣️
    Stem would be “examine this patient’s leg” or “examine this patient’s gait”
    • Stand and look
      • Ask to remove trousers (even if stem is examine gait)
      • At this point may not see anything as patient not walking
      • Look for scars at knee, buttocks and scars at the back
      • Look for wasting of muscles
      • Look for Foot deformities [Pes cavus/ Planus], claw toes [think CMT]
      • May see AFO or splints for foot drop/ walking aid
    • Walk the patient
      • Foot drop gait with high steppage gait
      • Loss of first rocker with slapping of the feet
      • “I note that there is unilateral foot drop gait, will go on to evaluate for the level of involvement”
      • Comment on associated gait pattern
        • Hands on thigh, recurvatum in Polio?
    • Return
      • Special test - ask to heel walk to confirm inability to.
      • Check spine if you see there if foot drop.
        • Check for spinal dysraphism
        • Previous instrumentation for L4/5 radiculopathy
      • Do trendelenberg test - for glutes weakness in L5 radiculopathy
    • Lie patient down
      • Look closely for scars again - buttock, lateral knee
      • Check correctibility of the foot drop
      • Check sensory - DPN, SPN, PTN
      • Check Motor
        • Ankle dorsiflexion
        • Eversion
        • Inversion [L5]
        • Hip abduction with patient at the side [L5]
      • Check pulses
    • Causes
      1. Glutes (Superior gluteal n.)
        inversion (tibial n.)
        Eversion (peroneal n.)
        L5 radiculo
        NO
        NO
        NO
        Sciatic nerve
        OK
        NO
        NO
        CPN
        OK
        OK
        NO
      2. Scar - traumatic, iatrogenic, neoplastic, infection, disc herniation
      3. No scar - traumatic (posterior hip dislocation), neoplastic (compression, neurologic (Hemiplegic CP), Polio
        • Systemic diseases such as diabetes, vasculitis, connective tissue, and autoimmune disease may also be the etiological cause.
        • In these circumstances, foot drop is almost always unilateral.
        Acute bilateral isolated foot drop: Report of two cases

        Foot drop is defined as the weakness of the foot and ankle dorsiflexion. Acute unilateral foot drop is a well-documented entity, whereas bilateral foot drop is rarely documented. Slowly progressing bilateral foot drop may occur with various metabolic causes, parasagittal intracranial pathologies, and cauda equina syndrome.

        www.ncbi.nlm.nih.gov

        Acute bilateral isolated foot drop: Report of two cases
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