Q1) Which of the following is true about Langer's line of the skin?
a) These are in the direction of muscle fibres.
b) These are perpendicular to the long axis of underlying muscle fibres
c) Most favourable incision is circular over an exposed area
d) Most favorable incision is a rhomboid shped one over an exposed area
Q2) The repair of cleft lip should be done at which age
a) 1 month
b) 3 months
c) 6 months
d) 1 year
Q3) Not true about W plasty in scar revision
a) W plasty converts a long lengthy incision to several irregular incisions
b) Small triangular flaps are created on the opposite side with sides not more than 6 mm
c) Outer triangles must be larger in both sides
d)Corner angles should be less than 60 degree
Q4) Fastest promoter of epithelisation in wound healing occurs with
a) Tight approximation of wound edges
b) Occlusive dressing
c) Leaving the wound open
d) Steroid Application
Q5) In patients who have undergone closed suction lipectomy, the best results are seen with
a) Lax skin
b) Excess skin folds
c) Good bony contour
d) Female sex
Answers
1) b
Langer's lines are useful indicators to design skin incisions and dimnish tension across incisions. These lines are perpendicular to underlying muscle. Most favourable incision is an elliptical incision with a length/breadth ratio of 4:1.
2) b
Principles of cleft lip repair include layered repair of the skin, muscle, and mucous membrane to restore symmetrical length and function.
The timing of cleft repair is important and a general recommendation is lip repair at 3 months, palate repair before 12 months, and alveolar bone grafting at approximately 9 years.
Ref:Sabiston 17th edition
3)d
Corner angles should not be more than 90degrees.
W plasty is used for revision of large irregular scars, semicircular and curvilinear incisions.
4) b
Occlusive dressings come in the form of 1) films, 2) hydrogels, and 3) hydrocolloids.
They are associated with the highest rate of epithelisation
5.) a
A patient with a lax and supple skin gives the best results after closed suction lipectomy
