Changes of hair papilla and its role in the growth cycle of the hair follicles / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the changes of hair dermal papilla and its regulatory role in the growth cycle of the hair follicles.</p><p><b>METHODS</b>Single hair follicles were isolated from surgical specimens of human scalp and cultured in Williams E medium. The growth of the hair follicle was measured and the morphology and structure of the dermal papilla in the different growth cycles were observed continuously.</p><p><b>RESULTS</b>The hair follicle could grow in the medium for 12 days at the average growth rate of 0.2-0.3 mm/day. The flat and round dermal papilla lay at the bottom of the hair bulb in the telogen and anagen stages. In the hair follicle with accelerated growth, the dermal papilla became elongated, loosened, and closely adhered to the hair matrix. In the catagen stage the dermal papilla shrunk, and became separated from the hair matrix. A new hair bulb was regenerated when the hair follicle was transected at a low level. The hair follicle stopped growing after transection at a higher position.</p><p><b>CONCLUSION</b>The hair dermal papilla is the essential for hair follicle growth, and plays an important role in regulating the hair growth cycle.</p>

Analysis of the adult penis 3D digitized image / 中华整形外科杂志

<p><b>OBJECTIVE</b>To analyze 3D digitized image of the adult penis, providing morphological data for plastic plerosis of the adult penis diagnosis and the surgery planning.</p><p><b>METHODS</b>200 adult penis were measured at the length and perimeter of the resting state and erection, and the relation among the erectile angle and length, perimeter were analyzed by the Angel Digital Image Studio software.</p><p><b>RESULTS</b>Penis increase with the age and stature growing. But the length increases in not the same ratio with the stature . With the erectile angle increasing, penile hardness is becoming strong, but penile volume do not marked change.</p><p><b>CONCLUSIONS</b>The digitized model of the penis and adjacent structure offer unique insights into the complex penis anatomy, providing morphological data for preoperative design and postoperative effective evaluation of the penile plastic plerosis.</p>

3D image analysis of nasal orbit fossa through a laser scanner: a new method and application of 3D image / 中华整形外科杂志

<p><b>OBJECTIVE</b>This study was to introduce the method for obtaining accurate 3D data of soft tissues using a 3D scanner under non-contact condition and the standard 3D measurement of the nasal orbit fossa for plastic surgery.</p><p><b>METHODS</b>A 3D laser scanner and the Geomagic software were used to obtain the standard facial contour of 30 Chinese people. The nasal orbit fossa, as the feature of beauty, was measured and the data were analyzed.</p><p><b>RESULTS</b>3D measurement exhibited the three-dimensional facial shape at every meaningful angle, with the advantages of high precision of 0.01 mm. We determined the lowest point and described the 3D feature of the nasal orbit fossa.</p><p><b>CONCLUSIONS</b>This method can illustrate the relation of the nasal orbit fossa and the surrounding structure. It is a new approach to facilitate preoperative plans, operation simulation and postoperative evaluation.</p>

Microanatomy study of facial nerve distribution at the temporal region for safe facelifting / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the route and scope of the facial nerve in the temporal region for clinical applications.</p><p><b>METHODS</b>Temporal region dissection was performed on 12 cadavers (24 sides) under light microscope.</p><p><b>RESULTS</b>There are two branches of the facial nerve in the temporal region from the superior margin of the parotid: the temporal branch and the zygomatic branch. Each of them has two to five branches, which run in the deep layer of the superficial temporal fascia. The temporal branch crosses the zygomatic arch to the temporal region, innervating the frontal muscle, the orbicularis oculi muscle, the corrugator supercilii muscle, and the muscle surrounding the ear, etc. The zygomatic branch goes to the lateral canthus, innervating the orbicularis oculi muscle, the upper and lower eyelid and zygomatic muscles. There are communicating branches among the temporal branches, the zygomatic branches and the supraorbital and lacrimal nerves of the ophthalmic nerve.</p><p><b>CONCLUSION</b>The temporal branches and zygomatic branches of the facial nerve run between the deep zone of the superficial temporal fascia and the superficial layer of the profound temporal fascia, where dissection should be avoided during rhytidectomy in order not to damage the facial nerve branches.</p>