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Biomedical subjects

Z P Lorenc

Publications and source records attributed to Z P Lorenc.

4 recordsLinked to original sources

Malar augmentation with silicone implants.

This study is a retrospective review of all consecutive surgeries involving insertion of silicone malar implants performed at the Manhattan Eye, Ear and Throat Hospital from January 1, 1985 to April 30, 1993. Sixty-four patients underwent placement of 126 silicone malar implants. Three different sizes were utilized: 23 size 1, 85 size 2, and 18 size 3. Eleven patients underwent unilateral implant placement, all for reconstructive purposes. The average and median ages of the patients were 43 and 44 years, respectively, with a range of 18 to 83 years. Malar implants were inserted for the following reasons: hypoplasia, post-traumatic deformity, post-tumor resection deformity, and correction of hemifacial microsomia. In 79 percent of the patients, malar augmentation was performed in conjunction with other surgical procedures. All implants were placed in a subperiosteal pocket by either the intraoral, subciliary, or preauricular approach. Forty-one percent were fixed in place by percutaneous sutures. Malar augmentation with silicone implants for both aesthetic and reconstructive purposes is an increasingly common surgical procedure. Good results are obtained with few complications. Infection is rare even with transoral placement. Silicone malar implants should be placed in a subperiosteal pocket and can be inserted safely through various routes. Malpositioning of implants is infrequent, and fixation sutures are not required. The most common problem is improper size selection. Patient satisfaction is high, in that no patient underwent permanent removal of a malar silicone implant once inserted.

Adolescent

Proliferative fasciitis of the hand in a child.

Proliferative fasciitis is unusual in the hand and is particularly unusual in young children. The histology of this benign process can be confusing, and it may be differentiated from a sarcoma. The proper treatment is local excision.

Child

The median forehead flap revisited: the blood supply.

In 6 fresh cadavers, an injection study of the facial vessels with disulfine blue dye and Microfil demonstrated visualization of large-caliber vessels of the median forehead skin even when the supraorbital and supratrochlear vessels were interrupted. The results of the study would suggest that the median forehead flap can be elevated without incorporating the supratrochlear vessels, but the flap design should be reserved for those clinical situations where the pedicle must be extensively mobilized, e.g., reconstruction of the nasal tip and columella and the presence of a low-lying frontal hairline.

Angiography

Neurosensory preservation in endoscopic forehead plasty.

The recent introduction of endoscopic techniques and instrumentation in aesthetic surgery was caused in part by the desire to minimize surgical scars as well as to decrease the possibility of sensory changes secondary to extended incisions, such as the execution of a coronal incision in performing a forehead plasty. Although endoscopic surgical techniques provide field magnification together with excellent illumination, localization and preservation of the forehead neurovascular bundles via the endoscope can be time consuming and tedious. A new method is introduced where percutaneous localization of the supraorbital and supratrochlear nerves enables the surgeon to perform an endoscopic forehead plasty in an expeditious manner with preservation of sensation of the forehead and scalp.

Endoscopy