Whether traumatic or following tumor removal, the loss of skin substances is defined according to their location, area, depth, elements exposed or affected by the loss of substance.

All the elements may be involved in a loss of substance: bone; muscle; tendon; vascular pedicle and nerve.

Substance loss reconstruction is scheduled based on the exposed features and the urgency of their coverage. The loss of a noble element also affects the timing of reconstruction and the priorities of the elements to be rebuilt first.

If the direct suturing devices fail due to loss of the substance, the skin is covered by (skin graft) or by a loco-regional or remote fat or musculo-cutaneous flap.

Preparing the bed for loss of substance before repair remains the critical step for successful coverage. The choice of hedge depends on local factors and the size of the substance loss. Local resources, if available, are used first. Coverage is by “the simplest to the most complicated” means.
Example: Breast reconstruction after tumor removal:
Flap reconstruction uses your own tissues (skin, fat, muscle) to replenish the breast, moving them from another part of the body (back, tumy).
Different types of flaps are used depending on the case: the flap of the great dorsal muscle, the flap of the great rectus muscle of the abdomen or a flap of skin and fat taken from the abdomen called DIEP.

THE RECONSTRUCTION BY FLAP OF THE GREAT DORSAL MUSCLE

When a flap reconstruction of the great dorsal muscle is done, part or almost all of the muscle is removed, depending on how much skin is needed in the muscle to reshape the removed breast. This musculocutaneous flap remains attached to the axilla by the artery, nerve, and vein in the axilla, which keep it alive.
the flap is inserted through the armpit and slid under the skin of the chest into the breast to be reconstructed.

the amount of skin removed is matched to the amount of skin removed from the chest during nonconservative breast surgery (or mastectomy). If this has been done with the skin pack in place, less skin will be brought back from the back than if more skin had to be removed (especially if radiotherapy had been used).

When the volume of muscle transferred is insufficient relative to the volume of the other breast, an implant is added to complete the reconstruction.
A second operating time in order to symmetrize the two breasts and reconstruct the MAP will be programmed after a delay of more than 3 months.
Flap reconstruction of the great dorsal muscle ensures good quality reconstruction. Its major disadvantage is to create an additional scar in the back with less muscle strength on the operated side.
However, this procedure is less demanding and takes less time than a flap reconstruction of the rectus abdomen muscle.

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