Facial Plastics Flashcards
What is the Frankfort horizontal line?
Imaginary line drawn from the top of the tragus to the infraorbital rim
What is the trichion?
Hairline in the midsagittal plane
What is the glabella?
The most prominent portion of the forehead in the midsagittal plane
What is the nasion?
The deepest point in the nasofrontal angle and the beginning of the nasal dorsum
What is the radix?
The root of the nose; the uppermost segment of the nasal pyramid
What is the rhinion?
The junction of the bony and cartilaginous dorsum
Where is the nasal skin the thinnest?
The rhinion
What is the nasal tip?
The anterior most point of the nose
What is the pogonion?
The anterior most point of the chin
What is the menton?
The inferior most point of the chin
What is the nasofacial angle?
The angle between the plane of the face and the nasal dorsum; usually 36 degrees
What is the nasolabial angle?
The angle between the upper lip and the nasal tip
What is the ideal nasolabial angle in men?
90 to 95 degrees
What is the ideal nasolabial angle in women?
95 to 105 degrees
What is nasal projection?
The degree to which the nasal tip extends out from the plane of the face
What is nasal rotation?
The plane of the nostril openings with respect to the plane of the face
How far should ears ideally project from the mastoid?
20 degrees
Collagen synthesis in the dermis declines by what percentage per year in adult life?
3 percent
Where is the incision placed for a coronal forehead lift?
4 to 6 cm behind the anterior hairline, through the galea
What are the advantages of the coronal forehead lift?
- No visible scar
- Excellent exposure
- Ability to address different muscles for rhytid control
What are the disadvantages of the coronal forehead lift?
- Most extensive of the forehead lifts
- Elevates the hairline
- Cannot use in males with alopecia
- Scalp hypoesthesia
Where is the incision placed for a high forehead lift?
Just inferior to the hairline for a pretrichial lift or 2 mm posterior to the hairline for a trichophytic lift
What are the advantages of the high forehead lift?
- Excellent exposure
- Height of the hairline is not altered
What are the disadvantages of the high forehead lift?
- Potentially visible scar
- Scalp hypoesthesia
What is the ideal position of the male brow?
The supraorbital rim
What is the ideal position of the female brow?
On the supraorbital rim with a lateral arch above the rim
Where should the highest point of the brow be located?
Vertically up from the lateral limbus
What are the advantages of the midforehead lift?
- Less extensive
- Does not alter the hairline
- Allows precise brow elevation
- Avoids scalp hypoesthesia
What are the disadvantages of the midforehead lift?
- Visible scar
- Difficult to achieve lateral brow elevation
What are the advantages to the direct brow lift?
- Simple procedure
- Able to tightly control brow position and shape
What are the disadvantages to the direct brow lift?
- Visible scar
- Unable to address crow’s feet
- Unable to address other musculature
What nerves are most at risk from a coronal or high forehead lift?
- Frontal branch of CN VII
- Supraobital nerves
- Supratrochlear nerves
What is the term for excessive upper eyelid skin laxity?
Dermatochalasis
What are the primary indications for upper lid blepharoplasty?
- Dermatochalasis with impairment of visual fields
- Fat pseudoherniation into the central and medial fat compartments
When performing blepharoplasty, where is the inferior aspect of the incision placed?
The superior border of the tarsal plate in the naturally formed skin crease, 7 to 10 mm from the lash line
When creating the superior incision for upper lid blepharoplasty, how many mm superior is the line placed?
- 8 to 10 mm at the midpupillary line
- 5 mm at the lateral canthus