Abstract
Conventional platyzmaplasty procedures have been performed via the standard submental incision. This approach has the obvious disadvantages of visible scarring and/or tethering of the scar to underlying structures, annoying bruising from strong skin traction to access neck structures through a keyhole incision and difficult hemostasis. In addition, access to investing fascia of the neck which may need tightening during a neck lift is a practical impossibility. Some individuals find even a small neck scar unacceptable, so much so that to avoid scarring in thyroidectomy surgery, an endoscopic approach was used with neck insufflation and anterior neck-lift device. We believe neck lift patients deserve similar privileges.
METHODS/TECHNIQUE:
47 patients with moderate to marked skin excess, and redundant preplatyzmal/subplatyzmal fat were candidates for isolated neck lift surgery, and did not need or refused to have a concomitant rhytidectomy.
A long incision is made in the lower gum and dissection proceeds subperiosteally. At the level of the submentum, the periosteum is incised, and then all structures in the midline raphe of the neck and for 2 cm either side are cut carefully until the platyzma is accessed. This involves transecting the investing deep fascia of the neck, which is marked by stay sutures to enable subsequent plication.
Dissection then proceeds in the preplatyzmal plane using a special designed endoscopic retractor with two ports: one for a 3-mm endoscope and the other for a suction device. The handle of the retractor is used to pull the neck skin anteriorly, and with a long curved blunt scissors, dissection proceeds in a caudal direction; cauterizing any bleeders encountered on the way. As the dissection proceeds deeper in the neck, the retractor is introduced further until the root of the neck was attained. Laterally, dissection could extend to the posterior cervical triangle until all platyzma is liberated from skin.
Subsequently, dissection is directed to the subplatyzmal plane to free the muscle from underlying fat. With the endoscope still in place, preplatyzmal and subplatyzmal fat are resected, and electro-cautery used to seal off any bleeders. Then excised fat is gently negotiated out of the neck to the outside through the gum incision.
Then attention is directed to the platyzma muscle. Its anterior borders are sutured in the midline with 3/0 poliglecaprone 25, and as many Z-plasties as deemed necessary are done to achieve adequate tightening and lengthening of the muscle. To restore the cervicomental angle, the platyzma is always anchored to the hyoid bone using a non-absorbable suture material.
Then the previously marked investing deep fascia of the neck is tightened using running 4/0 nylon. Finally, the buccal incision is stitched up. A contoured compression Caromed face lift bandage with a 2-inch neck extension is put in place, and worn continuously for 14 days. Details of the technique and a video of the procedure is to be presented.
RESULTS/COMPLICATIONS:
This novel route of access has several advantages: the submental incision is avoided, the platyzma is more accessible, enabling more perfect plication and hyoid fixation, traction and resulting trauma to the neck skin is totally avoided, leading to practically negligible swelling, bruising, dimpling or puckering, and a more anatomic repair is achieved since lax investing fascia of the neck is tightened, which is an additional reinforcement to the neck lift.
Only one hematoma was encountered, and 2 cases of residual skin redundancy. At the end of the first postoperative week, no skin bruising, dimpling or puckering was encountered in any of the cases.
Possible disadvantages of intra-oral route would include the theoretical risk of infection from oral commensal bacteria. However, routine antibiotic prophylaxis, and excellent neck vascularity rendered the infection rate 0%. Another possible disadvantage would be related to the absence of skin excision. However, when the skin was properly redraped, excision was unnecessary, and any redundancy had the tendency to shrink with the elastic recoil of skin. Furthermore repositioning of the platyzma stretched the skin since it had to travel a longer way in its new redraped position, thus redraped skin forms two sides of a triangle rather than just a hypotenuse (Pythagoras theory)
CONCLUSION:
Intraoral platyzmaplasty is a novel route of access to the neck lift, and has several advantages.