7/30/2019 Cutaneous Sensory Deficit Following Post-Auricular Incision

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Cutaneous sensory deficit

following post-auricular incision

7/30/2019 Cutaneous Sensory Deficit Following Post-Auricular Incision

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Introduction

• Post-auricular incisions – commonly

performed for a range of otological

procedures (Tympanoplasty, Mastoid

Surgeries)

• Provides wide access and cosmetically better.

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• Size of the initial cutaneous sensory deficit

from the post-auricular incision, & subsequent

potential for recovery – difficult to predict

from anatomy alone.

• Pts. often not warned of potential fornumbness following post-auricular incision.

• Aim  – ascertain frequency and severity of 

post-auricular numbness & potential forrecovery.

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7/30/2019 Cutaneous Sensory Deficit Following Post-Auricular Incision

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• Recovery of normal sensation & awareness of 

deficit 

GROUP n Initially

numb

At 8 – 12 months Hypaesth

esia

Anaest

hesia

Area

↓ 

Severity

↓ Not

numb

numb

Primary

surgery

35 24(69) 26(74) 9(26) 7(78) 2(22) 6(67) 7(78)

Revision

surgery

16 11(69) 10(63) 6(38) 4(67) 2(33) 2(33) 2(33)

Total 51 35(69) 36(71) 15(29) 11(73) 4(27) 8(53) 9(60)

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• Duration of recovery : 

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Discussion

• Patients questioned afte parotid surgery – ear

numbness predisposes them to ear trauma in

daily life.• No published studies regarding sensory deficit

following post-auricular incision, and recover

of sensation over time.

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Results

• Cutaneous supply of auricle – complex

• Pattern of innervation varies between

individuals

• Frequently areas of dual innervation

• Nerve injury sustained during post-auricular

approach can encompass all degrees of 

severity

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• Alternative mechanisms of sensation recovery

• Central nervous system

CONCLUSION

• Patients undergoing post-auricular surgical

approach

 – inform of likelihood of cutaneous deficit

 – Improvement over time