MOTIVA IMPLANTS

a breast implant is a prosthesis used to change the size, shape, and contour of a person's breast. in reconstructive plastic surgery, breast implants can be placed to restore a natural looking breast following a mastectomy or to correct congenital defects and deformities of the chest wall. they are also used cosmetically to enlarge the appearance of the breast through breast augmentation surgery.

complications of implants may include breast pain, skin changes, infection, rupture, and a fluid collection around the breast.

 

there are four general types of breast implants, defined by their filler material: saline solution, silicone gel, structured and composite filler. the saline implant has an elastomer silicone shell filled with sterile saline solution during surgery; the silicone implant has an elastomer silicone shell pre-filled with viscous silicone gel; structured implants use nested elastomer silicone shells and two saline filled lumen; and the alternative composition implants featured miscellaneous fillers, such as soy oil or polypropylene string. composite implants are typically not recommended for use anymore and, in fact, their use is banned in the united states and europe due to associated health risks and complications.

 

in surgical practice, for the reconstruction of a breast, the tissue expander device is a temporary breast prosthesis used to form and establish an implant pocket for the future permanent breast implant. for the correction of male breast defects and deformities, the pectoral implant is the breast prosthesis used for the reconstruction and the aesthetic repair of a man's chest wall (see:

gynecomastia and mastopexy).

 

uses

a mammoplasty procedure for the placement of breast implant devices has three (3) purposes:

 

● primary reconstruction: the replacement of breast tissues damaged by trauma (blunt, penetrating, blast), disease (breast cancer), and failed anatomic development (tuberous breast deformity).

● revision and reconstruction: to revise (correct) the outcome of a previous breast reconstruction surgery.

● primary augmentation: to aesthetically augment the size, form, and feel of the breasts.

 

the operating room (or) time of post–mastectomy breast reconstruction, and of breast augmentation surgery is determined by the procedure employed, the type of incisions, the breast implant (type and materials), and the pectoral locale of the implant pocket.

 

recent research has indicated that mammograms should not be done with any increased frequency than used in normal procedure in patients undergoing breast surgery, including breast implant, augmentation, mastopexy, and breast reduction.

 

surgical procedures incision types

breast implant emplacement is performed with five (5) types of surgical incisions:

 

● inframammary: an incision made to the inframammary fold (natural crease under the breast), which affords maximal access for precise dissection of the tissues and emplacement of the breast implants. it is the preferred surgical technique for emplacing silicone-gel implants, because it better exposes the breast tissue–pectoralis muscle interface; yet, imf implantation can produce thicker, slightly more visible surgical scars.

 

● periareolar: a border-line incision along the periphery of the areola, which provides an optimal approach when adjustments to the imf position are required, or when a mastopexy (breast lift) is included to the primary mammoplasty procedure. in periareolar emplacement, the incision is around the medial-half (inferior half) of the areola's circumference. silicone gel implants can be difficult to emplace via periareolar incision, because of the short, five-centimetre length (~ 5.0 cm) of the required access-incision. aesthetically, because the scars are at the areola's border (periphery), they usually are less visible than the imf-incision scars of women with light-pigment areolae; when compared to cutaneous-incision scars, the modified epithelia of the areolae are less prone to (raised) hypertrophic scars.

 

● transaxillary: an incision made to the axilla (armpit), from which the dissection tunnels medially, to emplace the implants, either bluntly or with an endoscope (illuminated video microcamera), without producing visible scars on the breast proper; yet, it is likelier to produce inferior asymmetry of the implant-device position. therefore, surgical revision of transaxillary emplaced breast implants usually requires either an imf incision or a periareolar incision.

 

● transumbilical: a trans-umbilical breast augmentation (tuba) is a less common implant-device emplacement technique wherein the incision is at the umbilicus (navel), and the dissection tunnels superiorly, up towards the bust. the tuba approach allows emplacing the breast implants without producing visible scars upon the breast proper; but makes appropriate dissection and device-emplacement more technically difficult. a tuba procedure is performed bluntly—without the endoscope's visual assistance—and is not appropriate for emplacing (pre-filled) silicone-gel implants, because of the great potential for damaging the elastomer silicone shell of the breast implant during its manual insertion through the short (~2.0 cm) incision at the navel, and because pre-filled silicone gel implants are incompressible, and cannot be inserted through so small an incision.

 

● transabdominal: as in the tuba procedure, in the trans abdominoplasty breast augmentation (taba), the breast implants are tunneled superiorly from the abdominal incision into bluntly dissected implant pockets, whilst the patient simultaneously undergoes an abdominoplasty.

 

the five surgical approaches to emplacing a breast implant to the implant pocket are often described in anatomical relation to the pectoralis major muscle.

 

● subglandular: the breast implant is emplaced to the retromammary space, between the breast tissue (the mammary gland) and the pectoralis major muscle (major muscle of the chest), which most approximates the plane of normal breast tissue, and affords the most aesthetic results. yet, in women with thin pectoral soft-tissue, the subglandular position is likelier to show the ripples and wrinkles of the underlying implant. moreover, the capsular contracture incidence rate is slightly greater with subglandular implantation.

 

● subfascial: the breast implant is emplaced beneath the fascia of the pectoralis major muscle; the subfascial position is a variant of the subglandular position for the breast implant.the technical advantages of the subfascial implant-pocket technique are debated; proponent surgeons report that the layer of fascial tissue provides greater implant coverage and better sustains its position.

 

● subpectoral (dual plane): the breast implant is emplaced beneath the pectoralis major muscle, after the surgeon releases the inferior muscular attachments, with or without partial dissection of the subglandular plane. resultantly, the upper pole of the implant is partially beneath the pectoralis major muscle, while the lower pole of the implant is in the subglandular plane. this implantation technique achieves maximal coverage of the upper pole of the implant, whilst allowing the expansion of the implant's lower pole; however, “animation deformity”, the movement of the implants in the subpectoral plane can be excessive for some patients.

 

● submuscular: the breast implant is emplaced beneath the pectoralis major muscle, without releasing the inferior origin of the muscle proper. total muscular coverage of the implant can be achieved by releasing the lateral muscles of the chest wall—either the serratus muscle or the pectoralis minor muscle, or both—and suturing it, or them, to the pectoralis major muscle. in breast reconstruction surgery, the submuscular implantation approach affects maximal coverage of the breast implants. this technique is rarely used in cosmetic surgery due to high risk of animation deformities.

 

● prepectoral or subcutaneous: in a breast reconstruction following a skin-sparing or skin- and nipple-sparing mastectomy, the implant is placed above the pectoralis major muscle without dissecting it so that the implant fills directly the volume of the mammary gland that has been removed. to avoid the issue of capsular contracture, the implant is often covered frontally or completely with a mesh in biomaterial, either biological or synthetic.

 

post-surgical recovery

 

● the surgical scars of a breast augmentation mammoplasty develop approximately at

6-weeks post-operative, and fade within months. depending upon the daily-life physical activities required of the woman, the breast augmentation patient usually resumes her normal life at 1-week post-operative.

 

● moreover, women whose breast implants were emplaced beneath the chest muscles (submuscular placement) usually have a longer, slightly more painful convalescence, because of the healing of the incisions to the chest muscles. usually, she does not exercise or engage in strenuous physical activities for approximately 6 weeks.

 

● during the initial postoperative recovery, the woman is encouraged to regularly exercise (flex and move) her arm to alleviate pain and discomfort; if required, analgesic indwelling medication catheters can alleviate pain

 

● moreover, significantly improved patient recovery has resulted from refined

breast-device implantation techniques (submuscular, subglandular) that allow 95 per cent of women to resume their normal lives at 24-hours post-procedure, without bandages, fluid drains, pain pumps, catheters, medical support brassières, or narcotic pain medication.