Widening of scars: foe coaxed into a friend? The Millard technique revisited

Hybrid double-dermal flap technique for vest-over-pants-closure correction of depressed abdominal scars

Surgical procedures performed during neonatal period or childhood that result in vertical midline, transverse left upper quadrant, or central upper abdominal scars create significant psychological concerns in adulthood. Various surgical techniques correct depressed scars, including scar revision, Z- or W-plasty flaps, sub-incision tunnelling, fat grafting, and autologous or alloplastic dermal grafting. This article describes a novel technique for repairing depressed abdominal scars using hybrid double-dermal flaps. We included patients with psychosocial concerns who underwent abdominal scar revision because of wedding plans. Hybrid local de-epithelised dermal flaps were used to correct the depression of the abdominal scar. Superior and inferior skin flaps, medial and lateral to the depressed scar, were de-epithelised for 2 to 3 cm and sutured using the vest-over-pants technique with 2/0 nylon permanent sutures. Six female patients who want to marry were included in this study. Depressed abdominal scars were successfully fixed using hybrid double-dermal flaps, either from the superior-inferior aspect for transverse scars or from the medial-lateral aspect for vertical scars. No postoperative complications were noted, and the patients were satisfied with the outcomes. De-epithelialised double-dermal flaps in the vest-over-pants technique are an effective and valuable surgical technique for correcting depressed scars.

Strategies to Minimize Surgical Scarring: Translation of Lessons Learned from Bedside to Bench and Back

Significance: An understanding of the physiology of wound healing and scarring is necessary to minimize surgical scar formation. By reducing tension across the healing wound, eliminating excess inflammation and infection, and encouraging perfusion to healing areas, surgeons can support healing and minimize scarring. Recent Advances: Preoperatively, newer techniques focused on incision placement to minimize tension, skin sterilization to minimize infection and inflammation, and control of comorbid factors to promote a healing process with minimal scarring are constantly evolving. Intraoperatively, measures like layered closure, undermining, and tissue expansion can be taken to relieve tension across the healing wound. Appropriate suture technique and selection should be considered, and finally, there are new surgical technologies available to reduce tension across the closure. Postoperatively, the healing process can be supported as proliferation and remodeling take place within the wound. A balance of moisture control, tension reduction, and infection prevention can be achieved with dressings, ointments, and silicone. Vitamins and corticosteroids can also affect the scarring process by modulating the cellular factors involved in healing. Critical Issues: Healing with no or minimal scarring is the ultimate goal of wound healing research. Understanding how mechanical tension, inflammation and infection, and perfusion and hypoxia impact profibrotic pathways allows for the development of therapies that can modulate cytokine response and the wound extracellular microenvironment to reduce fibrosis and scarring. Future Directions: New tension-off loading topical treatments, laser, and dermabrasion devices are under development, and small molecule therapeutics have demonstrated scarless wound healing in animal models, providing a promising new direction for future research aimed to minimize surgical scarring.

Applying the Chinese Wood Joinery Mortise-and-Tenon Principle to Repair Widening Surface Scars

We applied the classical Chinese wood joinery mortise-and-tenon principle to repair widening surface scars caused by incision tension. Along the outer margin of surface scars, the top half of the scar tissue was cut and removed. The authors designed serial tenon structures on the retained dermal surface of the scar and a series of corresponding mortise structures in the dermal tissue on the opposite side of the incision. Finally, the mortise and tenon structures were integrated and sutured, resulting in tensionless closure. Thirty-two surface scars were repaired with this method. The follow-up time ranged from 6 to 24 months. The incisions healed in the form of fine linear scars. No widening scars were observed in this series. The proposed mortise-and-tenon scar repair technique can effectively reduce incision tension and thus reduce scar formation at the incision site. The authors recommend this technique as an alternative effective method for revising widening surface scars.

Treating Scars in the Auricle Region

This article provides a review of the surgical and nonsurgical options available to manage a variety of auricular scars. The basics of wound healing are discussed in addition to the etiology of keloids and the cauliflower ear. Many auricular scars can be revised with scar excision techniques, but separate discussions for the treatment of keloids and the cauliflower ear are provided. The management plan for auricular scarring requires appropriate patient counseling regarding the risk of recurrence in keloids, regrowth of scar tissue in cauliflower ears, scar hypertrophy at the line of closure, widening of the scar, and persisting ear contour deformities.

The Subunit Principle in Scar Face Revision

Facial scaring is considered one of the most difficult cosmetic problems for any plastic surgeon to solve. The condition is more difficult if the direction of the scar is not parallel to relaxed skin tension lines. Attempts to manage this difficult situation included revisions using geometric designs, Z plasties or W plasties to camouflage the straight line visible scaring. The use of long-lasting resorbable sutures was tried too. Recently, the use of botulinum toxin during revision improved the results. Fractional CO2 lasers, microfat grafts, and platelet-rich plasma were added to the armamentarium. The scar is least visible if placed in the junction between the facial subunits. The aim of this study is to investigate the use of the subunit principle to improve the results of scar revision. Four patients were included in this study. Tissue expansion of the intact part of the subunit allowed shifting the scar to the junction between the affected subunit and the adjacent one. Tissue expansion, delivery of the expanders, and advancement of the flaps were successful in all patients. The fact that this is a 2-stage procedure and sacrifices some of the intact skin from the affected facial subunit, makes this technique reserved to patients with ugly facial scars who are ambitious to improve their appearance.

Eyelid and Sternum Fibroblasts Differ in Their Contraction Potential and Responses to Inflammatory Cytokines

Background:

Adverse skin scarring varies by anatomical site with, for example, presternal skin showing a greater hypertrophic response when compared with eyelid; such differences have traditionally been attributed to regional variations in skin tension, thickness, and Langer’s lines. Fibroblasts are the main cell implicated in fibrosis, and they too are known to show anatomical variation in their expression, differentiation, and intercellular interactions. We, therefore, investigated whether intrinsic differences in skin fibroblasts derived from separate locations might contribute to the observed discrepancies in clinical scarring.

Methods:

Primary in vitro cultures were established using matched eyelid and presternal skin from 3 healthy donors undergoing blepharoplasty surgery. We used an in vitro collagen gel model of fibroblast-mediated tissue contraction to compare the properties of the dermal fibroblasts from each site. Cell contractile force and matrix stiffness were assessed in 3-dimensional tissue constructs using an automated high-throughput device.

Results:

Dermal fibroblasts isolated from eyelid and sternum differ both in their ability to contract a gel matrix and in their response to cytokine stimulation; despite having lower intrinsic contractile force (P < 0.01) and resting stiffness (P < 0.02), the presternal cells were more contractile (P < 0.001) following stimulation with serum, or inflammatory cytokines transforming growth factor-β (P < 0.01) and interleukin-1β (P < 0.05).

Conclusions:

The propensity to cutaneous scarring may, at least in part, result from intrinsic differences in the local fibroblasts’ ability to contract and their sensitivity to inflammatory cytokines. Improved understanding of the underlying molecular pathways should prove useful in identifying new therapeutic targets for altering surgical and other scarring.

Are auricular keloids and persistent hypertrophic scars resectable? The role of intrascar excision

BACKGROUND

Intrascar excision with debulking procedure is a good choice for scar revision in unique 3-dimensional facial aesthetic units, especially in the auricular area. It can remove or reduce scars in a shorter course without distortion of the surrounding anatomic structures and visible operative scars. This retrospective study was done to present intrascar excision procedures in persistent auricular hypertrophic scars or keloids.

METHODS

Between 1997 and 2010, 18 ears in 13 patient cases with persistent hypertrophic scars and/or keloids in their external ear due to burns or trauma were collected for evaluation. There were 10 males and 3 females. The age distributions ranged from 5 to 49 years with an average of 20.1 years. All received intrascar excision with debulking procedure for their ear deformity. One case combined with YV-plasty procedure to obtain better aesthetic result. The follow-up period ranged from 0.3 to 14 years with an average of 3.6 years.

RESULTS

There was no recurrence in a series of average 3.6 years follow-up. Of the 13 patients, 11 (84.6%) objectively presented good and satisfactory surgical outcomes and the other 2 patients were acceptable.

CONCLUSIONS

The intrascar excision in auricular persistent scars or keloids has the following advantages: it (1) achieves primary closure, (2) does not distort the anatomic landmarks, (3) does not sacrifice the important structures, (4) has a debulking effect, (5) can be done anytime, even if scars are not mature, (6) has good cosmetic results, (7) may combine with Z- or VY-plasty for functional improvement, and (8) has minimal complications.

Eradication of keloids: Surgical excision followed by a single injection of intralesional 5-fluorouracil and botulinum toxin

BACKGROUND

Keloids may complicate wound healing secondary to trauma, inflammation or surgical incision. Although various treatment modalities have been used with variable degrees of success, overall recurrence rates have remained unacceptably high.

METHODS

The present study involved 80 patients with keloids of at least one-years' duration. Following total surgical excision of the keloid, a single dose of 5-fluorouracil was injected into the edges of the healing wound on postoperative day 9 together with botulinum toxin. The concentration of 5-fluorouracil used was 50 mg/mL and approximately 0.4 mL was infiltrated per cm of wound tissue, with the total dose <500 mg. The concentration of botulinum toxin was 50 IU/mL with the total dose <140 IU.

RESULTS

Patients were followed-up for 17 to 24 months and a recurrence rate of 3.75% was found, which was significantly lower than in previously reported studies using other therapeutic modalities.

CONCLUSION

The author recommends that this treatment be routinely applied to all keloids because it is significantly more effective than those described by other authors.

Reverse tissue expansion by liposuction deflation for revision of post-surgical thigh scars

Scars hypertrophy and widen when stretching mechanical forces are applied to resilient newly formed collagen before it reaches final maturity marring the final result of many surgical procedures and resulting in a clinical problem for many patients. Scar revision by surgical excision remains the traditional treatment for hypertrophic or widespread scars. It relies upon recruitment of local tissues for closure of the ensuing defect. Providing tension-free skin closure is the best option to avoid recurrence. Although tissue expansion procedure is a valuable and reliable technique for scar revision, it has its own disadvantages and potential complications. We describe an alternative method for scar revision that may be applicable in certain situations. Instead of expanding the soft tissues to make available additional skin, deflation by liposuction may be affected to relax the skin envelope thus indirectly providing additional skin for scar revision. We call this method 'reverse tissue expansion'.

Cutaneous scarring: a clinical review

Cutaneous scarring can cause patients symptoms ranging from the psychological to physical pain. Although the process of normal scarring is well described the ultimate cause of pathological scarring remains unknown. Similarly, exactly how early gestation fetuses can heal scarlessly remains unsolved. These questions are crucial in the search for a preventative or curative antiscarring agent. Such a discovery would be of enormous medical and commercial importance, not least because it may have application in other tissues. In the clinical context the assessment of scars is becoming more sophisticated and new physical, medical and surgical therapies are being introduced. This review aims to summarise some of the recent developments in scarring research for non-specialists and specialists alike.

The dermal tube: a versatile tool in scar revision

INTRODUCTION AND AIMS

Tethered scars are a common problem that can have functional and aesthetic consequences. Several approaches which use the dermis have been described for tethered scar correction. The objective of this report is to demonstrate the superior aesthetic outcomes achieved through the introduction of a new, simple dermal technique in scar revision surgery.

MATERIALS AND METHODS

From August 2002 through to January 2006, 35 patients were operated on by the senior author for revision of tethered, sunken scars. All scars were considered to demonstrate sunken or depressed characteristics based upon clinical examination and photographic evidence. All patients were operated on by the same surgeon and using the same surgical technique.

KEY RESULTS

All the patients were women (age range 17-64 years), with tethered scars affecting the breast (n=10), lower limb (n=5), upper limb (n=6), chest wall (n=4), laparotomy scars (n=8) and tracheotomy scars (n=2). Scars ranged in length from 4 to 30 cm (mean=12 cm). Follow up ranged from 2 to 24 months (median=16 months). At the 12 month follow up, patients were presented with their pre- and postoperative photos and asked to select the overall improvement in aesthetic appearance achieved as either: 'no improvement', 'improved' or 'marked improvement'. These were then ranked to scores of 0, 1 and 2, respectively (0=no improvement; 1=improved and 2=marked improvement). The responses from the questionnaire showed that the median score was 2 with 100% ranking >or=1. Thirty-two patients (91.4%) scored 2. There were no complications reported and the results at 12 months showed that restoration of volume to the scars had been maintained in all patients. To date, no one has had to undergo further revision and there have been no incidences of re-tethering.

CONCLUSION

The technique is simple to learn by even junior surgeons. Through following four distinct steps consistent and readily reproducible results are achieved.

Use of Botulinum Toxin Type A to Prevent Widening of Facial Scars

BACKGROUND

Wounds of the face, especially those lying perpendicular to the lines of Langer, are known to heal poorly with conspicuous scarring. Different methods have been tried to tackle this problem, including corticosteroid injections, irradiation, ultrasound, silicone applications, and many others. However, as expected, their effects were far from satisfactory, because they do nothing to alleviate the underlying pathologic process, which is the distracting effect of muscle pull on immature collagen.

METHODS

In 40 patients with ugly scars of the face, botulinum toxin was used to induce temporary paralysis of the muscles during revision surgery, thus minimizing tension on healing wound edges until the collagen could mature.

RESULTS

Using both objective and subjective assessment scales, 90 percent of patients ended up with an improved outcome. This new technique has been proven effective in primates and in this study was shown to be as effective in humans, yielding results superior to those of any other treatment modality.

CONCLUSION

In view of the results of this study, it is considered worthwhile to offer patients with ugly scars of the face botulinum toxin injections simultaneous with revision surgery.

Scar management: prevention and treatment strategies

PURPOSE OF REVIEW

Aberrant wound healing results in unsightly scar, hypertrophic scar, and keloid formation, causing functional and cosmetic deformities, discomfort, psychological stress, and patient dissatisfaction. Scar prevention and management, both surgical and nonsurgical, continue to be important issues for the otolaryngologist.

RECENT FINDINGS

Both animal and human models continue to point to the integral role of transforming growth factor-beta in aberrant healing. Multiple extracts have promising results as therapies for scarring and are widely marketed but need to be further investigated. Scar prevention advancements include refinements in surgical technique, nutritional supplementation, and optimal wound care. Steroid injections continue to play a major role in the regression of scars and keloids. Dermatography assists in the minimization of scar appearance. Dermatography, laser therapies, intralesional 5-fluorouracil, and adjuvant radiotherapy are emerging therapies. Topical vitamin E utility is revisited. New surgical scar revision techniques include modified excision techniques and skin grafting.

SUMMARY

Despite optimal efforts to avoid scar formation, aberrant wound healing may occur. The use of topical agents and intralesional steroid injections can minimize early scar formation. Strategies for prevention and management of keloids and hypertrophic scars continue to develop, as the basic science mechanisms underlying aberrant wound healing are elucidated.