Plastic Surgery Skin Pathology 1. Disease 2. Trauma 3. Cosmetic Alteration Damage or loss of skin/tissue through Disease pathological process (disease) Trauma – Damage or loss through 1. Burns traumatic event 2. Frostbite – necrosis may require amputation 3. MVA – motor vehicle accident 4. Falls and blunt injuries 5. Piercing injuries Cosmetic alteration – addition or 1. Congenital defects replacement of tissue or removal of excess 2. Scars or unwanted tissue 3. Lesions 1. Microtia – external ears absent or Congenital Defects unusually small 2. Lop ears – ears protrude abnormally 3. Micrognathia – small chin 4. Prognathia – protruding jaw 5. Syndactylism – fused digits 6. Polydactylism – excess digits Rearranging/reshaping to improve Scars appearance or make less noticeable 1. Benign – non cancerous growth Lesions 2. Malignant – cancerous growth 1. Nevus – moles Benign 2. Hemangioma – vessel tumor 3. Lipoma – fatty tumor 4. Verruca – warts 5. Keratosis – dry, scaly skin – may develop cancer (actinic/seborrheic) 1. Basal cell (BCCA) – most Malignant common, spreads locally, rarely metastasizes A = asymmetry 2. Squamous cell (SCCA) – may B = borders are irregular metastasize to distant organs. Death C = color, colors unevenly distributed to 1% of SC patients. D = diameter > .5cm (1/4”) 3. Melanoma – highly malignant, often presents as mole that has changed color, size, appearance Burns and Plastic Surgery Burn Assessment Techniques 1. Identify the burn agent 2. Classify the burn 3. Assess the burn CONTACT WITH: Identify the burn agent 1. Thermal – fire, hot object/fluid 2. Chemical – corrosive/irritating 3. Electrical – overexposure – deep damage than apparent 4. Radiation – sunlight, x-rays, nuclear explosions, radium 1. First degree – superficial – outer Classify the burn epidermal layer – quick healing 2. Second degree – epidermis and part of dermis, moist pink surface with blisters – slow to heal. Loss of body fluids and increased infection risk 3. Third degree – full thickness to epidermis, dermis and subq – dry, pearly-white or charred appearance – eschar forms over dry, destroyed skin. No sensation. Needs skin graft 4. Fourth degree – “char burns” extends into bones, tendons and muscles. Extensive debridement and skin graft required. Assess the burn 1. Adult’s Rules of Nines 2. Pediatric Lund-Browder chart Adult Rules of Nines – divides body into 1. Head and neck = 9% sections = to multiples of 9% 2. Torso,anterior,posterior = 18% each 3. Upper extremities = 9% each 4. Lower extremities = 18% each 5. Perineum = 1% Pediatric Lund Browder Chart – based 1. A =1/2 head 9-1/2% (0) – 3-1/2% adult on burn location and age 2. B = ½ thigh 2-3/4% (0) – 4-3/4% adult 3. C = ½ leg 2-1/2% (0) – 3-1/2% adult 4. D = torso 13% child 5. E = arms = 2% upper, 1-1/2% forearm, 1-1/2% hand. Plastic Surgery Treatments Treatment or removal of tissue, lesions 1. General treatment or scars 2. Burn Treatment 3. Lesion Treatment 4. Liposuction 1.Chemical peel – chemical burn to skin to General treatment activate new growth 2. Cryosurgery – freezes tissue/cancer cells 3. Curettage/cautery – leaves larger scar 4. Debridement – removes dead/damaged tissue and debris from wound/burn prior to skin graft/dressing 5. Dermabrasion – smoothing skin by “sanding” with dermabrader 6. W, Z, Y-V plasty – scar revision technique involve excision and closure of scars 1.Amputation – needed to stop infection Burn Treatment 2.Contracture release – renew elasticity to scar tissue 3. Escharectomy – excise eschar down to fascia, covered with biologic dressing 3-5 days, STSG follows 4. Escharotomy – bilateral incision to remove eschar crusted, necrotic, burned or diseased tissue. Incision to fascia relieves pressure, improves circulation and prevents further necrosis 5. Fasciotomy – Incision extended through the fascia if escharotomy fails 6. Replacement – skin grafts or tissue flaps 7. Tangential excision – burn tissue excised until normal debris is reached. 1. Cryosurgery – defect frozen with super Lesion Treatment TX = treatment cooled elements. 2. Excision – primary closure or graft of op site 3. Laser – area of skin CA laser beam tx 4. Mohs – exc. Advanced, recurrent skin CA with minimal removal normal tissue 5. Radiation – skin CA tx with x-rays 6. Topical chemotherapy – anticancer drugs applied directly to skin lesions 2-3 wks (Efudex – common tx) Exc. Fat deposits via metal cannula/suction Skin grafts and Plastic Surgery Skin graft donor options 1. Homograft – tissue donor same species, Homo/hetero used as “biologic” dressings. primarily cadaver skin Stimulate epithelium formation, promote 2. Hetero-xenograft – tissue donor growth of granulation tissue, enhance different species, commonly pigskin wound healing. 3. Autograft – tissue from patient’s body Auto graft May be harvested and preserved. Wrap in Free skin graft – Detached from donor wet 4x4, tie attached, placing just above site and moved to recipient site. Blood normal saline in sterile cup. Place suture in supply comes to graft from capillary in lid to maintain position. growth at recipient site. 4. Replantation – use of completely or Tissue flap – Tissue in which subq incompletely severed structures/tissue vascular system is intact or re-established, 5. Implants – augotenous as well as metal, then transferred to recipient site. Used for alloplastic, biodegradable materials that full thickness/extensive tissue loss. cannot be reabsorbed into body. Must be hypoallergenic, nontoxic and Implants – Tissue expansion – promotes growth of noncarcinogenic. Dacron, Teflon, Marlex new skin to replace damaged skin. Placed and Silastic used for alloplastic. Ceramic, under skin to stretch, when appropriate size stainless, titanium also used. reached, moved onto damaged area. Prosthetics – synthetic or natural materials to supplement or replaced damaged tissue or structures. 1. Full thickness skin graft (FTSG) Wolfe Skin graft harvesting techniques 2. Split-partial thickness skin graft (STSG) Thiersch 3. Composite graft Contains epidermis/dermis, possible subq FTSG Results in minimal wound contracture Results aesthetically pleasing Adds padding Covers smaller defects – face, neck, hands, areas of flexion Taken free hand with knife Usually, donor site primarily closed STSG – donor site regenerates quickly. Contains epidermis/only portion of dermis Can be reused in 2 weeks. Varies in thickness Dressings – Results in some wound contracture Recipient site – gauze mesh, cotton Looks less like normal skin sheets, Ace or Webril to maintain contact. Covers large, denuded areas Keep moist with NS or 1-3% acetic acid “harvested” donor site – dermatome saline. Change daily. May be enlarged by skin graft mesher Donor site – Xeroform/medicated gauze Dressings – site dependent Compound, specialized, epidermis/dermis Composite graft Very small, < 2cm in circumference Liposuction Common tissue flap techniques Advancement flaps – advanced to near site Distant flaps – advanced to distant site Pattern flap – based on blood supply pattern Covers very specific areas – hair transplant 1. Advancement flaps 2. Distant flaps 3. Pattern flaps 1. Tissue expansion flap – used to increase amount of tissue available for grafting by stretching. Tissues expands 1-1/2 times. 2. Rotation flap – rotated on axis from donor to recipient. Muscle/transposition 3. Pedicle flap – tissue remains attached at one or both ends of donor site. Blood supply to graft maintained in pedicle. 1. Free flap – donor tissue skin, muscle and even bone with its vascular bundle. Completely detached/transferred to recipient site 2. Myocutaneous/musculocutaneous flap – includes muscle, fascia, subq, skin. Allows distant transfer to cover large defect 3. Neurosensory flap – sensory nerves to flap remain intact to provide sensation such as face, hands, feet 4. Omental flap – omentum mobilized to cover defects. Most often cover sternum after infection or radiation necrosis 1.Axial pattern – vessels have axial orientation 2. Island axial – isolated flap often tunneled beneath skin to recipient site 3. Random – no axial vessel orientation Common Facial Procedures Used to improve acne scars or reduce elevated scars, dirt, tattoos Rhytidectomy Removes excess skin in face and neck with tightening of underlying supports Blepharoplasty Removes excess kin and protruding periorbital fat of upper/lower lids. Otoplasty Corrects congenital deformities of lop ears or microtia or correct traumatic injury Rhinoplasty Reconstruction for deformity Mouth Cleft palate – repair deformity to improve speech pattern, prevent passage of food/liquid into nasal passage Cleft lip – repair deformity splitting of lip that may/may not extend into nose/palate Dermabrasion Chin Neck Fenulotomy – release of tongue tie Chin lift/pull – suture endoscopically placed/tied to remedy redundant chin skin Orthognathic- correction of foreshortened jaw or partial absence of chin/cheek Mentoplasty – cosmetic reshaping of chin. Often uses silastic implant to build up or partial mandible removal to shave back Dissection – cervical nodes, affected muscle/vascular structures Cysts – brachial/thyroglossal Hemangioma,lymphagioma removal Submental lipectomy – excision excess chin/neck fat Common Breast procedures Mammoplasty/Mammaplasty – Augmentation – insertion of prosthesis to reconstruction of breasts treat hypomastia Reduction – excision excess breast tissue to treat macromastia Reconstructive – post mastectomy Mastopexy – breast lift to treat breast ptosis Mastectomy – Excision breast CA Gynecomastia Excision Excision of breast tissue - male Common thoracic and abdominal Plastic Surgery Procedures Abdominoplasty Tummy tuck – excision excess fat, abd wall skin and tightening abd muscles Suction lipectomy or sculpting Excision of excess body fat External genitalia Correction of genital defects Common Plastic surgery Procedures for extremities Corrective surgery for congenital Club foot or hand anomalies of hand/foot Syndactyly/Polydactyly Soft tissue tumors and pressure ulcers Often for bed ridden/diabetic pts Replantation of amputated extremities Often for traumatic amputations Microvascular and microneural procedures Often for trauma/burn victims Special Instruments – Minor/Basic Plastic Trays Cutting: Blades, curettes, dermabrader, dermatome (mineral oil applied to skin to aid gliding), knife dermatomes – Ferris-Smith (used for free hand cutting, interchangeable blades), Watson (adjustable smooth rod slides over skin as surgeon advances rotationally, Weck(straight razors with interchangeable guards), Skin graft mesher – used to expand skin, drill for bones, liposuction curettes and liposuction vacuum machine, osteotome – used to cut/shape bone, Rasp (Cottle, Fomon, Joseph, Lewis) – used to reshape bone/cartilage, Scissors – used for dissecting and cutting (plastic surgery, Iris, Tenotomy or Stevens, Blepharoplassty, Facelift, Fomon or lower lateral, wire cutting scissors. Grasping/holding: Forceps – Adson, Brown, Hudson, Bishop-Harmon. Used to grasp delicate tissue. Piercing towel clips. Retracting/exposing: Skin hooks (Cottle, Gillies, Joseph) used to retract dermis and provide exposure to underlying structures; may have single/double prongs. Nerve retractor – Cushing, Love, Sachs – can retract vessels Suturing/Stapling: Needle holders – Castroviejo – used to hold fine needles Ryder – used to hold find needles Staples and staplers Ligating clip appliers and clips Measuring: Caliper – Castroviejo, Jameson – used for making precise measurements for face, eye and ear procedures Ruler, Metal – Used to make precise measurements for small/large grafts