Introduction
- he ear is made of a series of cartilages
- the position of the ear flap is largely controlled by muscles that attach onto the cartilages of the ear
- trauma (pulling of the ear) when a dog is a pup (or even when it is mature) may cause disruption of the muscles of the ear and cause the ear flap to flop over
Signalment
- the problem is only noted in dogs that normally have erect ears
- it can be seen in young dogs
Signs
- inability of the ear flap to assume an erect position
Treatment
- the scutiform cartilage is examined at the time of surgery for damage
- if the scutiform cartilage is torn from the pinnal cartilage it is reattached with nonabsorbable sutures
- care is taken during the surgery to prevent damage to the muscles that control ear movement
- a graft (collagen called laminated BIOSIS) is sutured to the cartilage of the ear flap (typically the scutiform) and to the occipital crest (bony projection of the skull)
Prognosis
- good prognosis with surgery
- the ear will permanently assume an erect position and likely will not lay flat even if the dog tries to do this
- the ear typically can still rotate forward and backward, thus hearing ability is improved with surgery
Complications
- infection
- seroma formation
- recurrence of erectile ear dysfunction necessitating another surgery
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