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16 Cards in this Set
- Front
- Back
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What is the definition of rearfoot varus?
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A fixed osseous structural abnormality in which the calcaneus is inverted when the STJ is in neutral and the MTJ is locked
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Describe the 'Distal Tibial Epiphyseal Varus' Aetiology of rearfoot varus
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In equality of growth between the medial and lateral sides of the distal tibia epiphysis. Thought to be a growth disturbance as opposed to a congenital condition.
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Describe the ' Talar Varum' Aetiology of rearfoot varus
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Medial aspect of the talus is narrower than the lateral, tilting the calcaneus into varus
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Describe the 'Calcaneal Varus Torsion' Aetiology of rearfoot varus
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Frontal plane torque of the calcaneus, resulting in a c shaped calcaneus
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Describe the 'Tibial Varum' Aetiology of rearfoot varus
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FP abnormality of the distal 1/3rd of the leg where it is inverted relative to the ground when STJ is in neutral
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What are the associated Pathomechanics of Tibial varum?
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- Curvature of the whole tibia
- Genu varum - Curvature of the distal 1/3 - Blount's disease - Osteoarthritis - Trauma |
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What is a Fully compensated Rfoot varus?
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Is when there is sufficient STJ pronation to allow the calcaneus to become perpendicular to the ground
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What are some gait abnormalities associated with Rfoot varus?
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- Excessive pronation of STJ and OA after heel strike until calc is perpendicular
- Internal leg rotation in loading - Some resupination in midstance, but STJ usually pronated in propulsion |
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What is a Partially compensated Rfoor varus?
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Is when there is insufficient STJ ROM to allow the calcaneus to acheieve a perpendicular position
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What are signs and symptoms of Rfoot varus?
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- Slight lowering of a 'medium' medial arch on wb
- Mild callus on sub 2,3 MPJs - Increase lateral heel wear - Haglund's syndrome - Inadequate shock absorbtion in partial/uncomp - Lateral instability - Tailor's bunion/hammered 5th - Symptoms related to increase torsion or excess deceleration |
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What is Rfoot valgus?
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A structural abnormality in which the calcaneus is everted when the STJ is in its neutral position and MTJ is locked
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Why is Rfoot valgus not compensated?
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As the foot would have to work against gravity
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What effect will 0-3 degrees of Rfoot valgus have?
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Will have little effect
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What effect will 4-10 degrees of Rfoot valgus have?
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The STJ will pronate to its end ROM with pronation symptoms
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What effect will 10 or more degrees of Rfoot valgus have?
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It will lead to talar head contacting the ground, which is quite stable, only approxamately 0-3 degrees or more pronation
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What are the Aetiologies of a rearfoot varus?
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- Distal Tibial Epiphyseal Varus
- Talar Varum - Calcaneal Varus Torsion - Tibial Varum |
