Frontal Sinus Displacement of Silicone Implant After Previous Rhinoplasty.

Rhinoplasty, a historic surgical procedure for facial esthetics, has been actively performed in Asia. The use of autologous tissues or artificial materials, such as silicone, Gore-Tex, and Medpore, is common in achieving cosmetic improvements. However, artificial material poses risks of inflammation and foreign body reactions, leading to complications like infection and necessitating material removal and antibiotic treatment.

Comparison of a coupling system and the suture method in end-to-side microvascular anastomosis in head and neck reconstruction.

Background: Use of coupling devices in microvascular anastomosis continues to increase, but it is not yet actively used in end-to-side (ETS) anastomosis because there is no standard method. Therefore, we propose an easy and time-saving ETS micro-anastomosis method using coupling devices in head and neck reconstruction and compare it with the conventional suture method.

Materials And Methods: We retrospectively reviewed 30 consecutive cases (43 anastomoses) of ETS anastomosis in head and neck reconstruction from 2018 to 2022.

Safe and effective thrombolysis in free flap salvage: Intra-arterial urokinase infusion.

Despite the high success rate in reconstruction using free tissue transfer, flap failure is often caused by microvascular thrombosis. In a small percentage of cases with complete flap loss, a salvage procedure is performed. In the present study, the effectiveness of intra-arterial urokinase infusion through the free flap tissue was investigated to develop a protocol to prevent thrombotic failure.

Two-team-approached free flap reconstruction for plantar malignant melanoma: An observational (STROBE-compliant) trial.

Reconstructive treatments of heel defects usually involve regional flap techniques such as medial plantar flap procedures due to the limited availability of adjacent soft tissues. Although free flaps have advantages in terms of function and aesthetics, they remain challenging due to the longer operation time required than for regional flaps. Thus, we introduce an appropriate 2-team surgical protocol to reconstruct plantar defects after wide excision of malignant melanoma using free flap coverage.

Comparison of the Incidence of Capsular Formation in Two-Stage, Implant-Based Breast Reconstruction Using an Insertion Funnel and Sizer.

Purpose: Capsular formation around breast implants can produce various complications, including erythema, tenderness, discomfort, and breast deformation. Moreover, the capsule is thought to be correlated with breast implant-associated anaplastic large cell lymphoma. The proposed technique of capsule reduction can prevent some of these complications.

Cryopreservation of lipoaspirates: in vitro measurement of the viability of adipose-derived stem cell and lipid peroxidation.

As the storage time of the fat tissue passes by, lipid peroxidation and creation of by-products may take place. The objective of this study was to evaluate the cell viability and functional changes of adipose-derived stem cells (ADSCs) in the cryopreserved lipoaspirates at different temperatures in accordance with lipid peroxidation. Lipoaspirates acquired from liposuction were divided into four different temperature groups and stored at 4°C, -20°C, -80°C, and -196°C.

Reconstruction of radiation-induced ulcers with free flaps using the perforating vessel as a recipient vessel.

Background: Free flaps can be options for coverage of radiation ulcers. However, due to radiation damage, it may be hard to find and dissect a reliable recipient vessel for microsurgical anastomosis. When the radiation fields are targeted for deep tissues, superficial tissues may be less affected by radiation.

A 3D cell printed muscle construct with tissue-derived bioink for the treatment of volumetric muscle loss.

Volumetric muscle loss (VML) is an irrecoverable injury associated with muscle loss greater than 20%. Although hydrogel-based 3D engineered muscles and the decellularized extracellular matrix (dECM) have been considered for VML treatment, they have shown limited efficacy. We established a novel VML treatment with dECM bioink using 3D cell printing technology.

Trochanteric area reconstruction with free flap using perforators as recipients: An alternative and effective option.

Background: Reconstructing soft tissue defect on the trochanteric area is challenging. Due to the significant complications associated with regional flap, free tissue transfer is an appropriate option. However, this area has poor recipient vessels.

Risk of Ischemic Stroke After a Facial Bone Fracture in Elderly Patients.

Background: Ischemic stroke is a major disease in our aging society, and the incidence of facial bone fractures among the elderly has increased. However, there have been few studies evaluating stroke after facial bone fractures. The purpose of this study was to investigate the frequency and risk of stroke after facial bone fractures.

A perforator from the ulnar artery and cutaneous nerve of the hypothenar area: An anatomical study for clinical application.

Purpose: The hypothenar perforator flap is a recently introduced method for fingertip reconstruction, which offers excellent results but lacks adequate anatomic studies. The present study is aimed to clarify the anatomic characteristics of the hypothenar area to analyze the potential clinical application of sensate flaps and to access the reliability of hypothenar perforator arteries.

Materials And Methods: A total of 26 amputated forearms were used, and a percentage scattergram using an x-y-axis was created.

Prevention of postsurgical scars: comparsion of efficacy and convenience between silicone gel sheet and topical silicone gel.

To date, few studies have compared the effectiveness of topical silicone gels versus that of silicone gel sheets in preventing scars. In this prospective study, we compared the efficacy and the convenience of use of the 2 products. We enrolled 30 patients who had undergone a surgical procedure 2 weeks to 3 months before joining the study.

In vivo effects of adipose-derived stem cells in inducing neuronal regeneration in Sprague-Dawley rats undergoing nerve defect bridged with polycaprolactone nanotubes.

There have been many attempts for regeneration of peripheral nerve injury. In this study, we examined the in vivo effects of non-differentiated and neuronal differentiated adipose-derived stem cells (ADSCs) in inducing the neuronal regeneration in the Sprague-Dawley (SD) rats undergoing nerve defect bridged with the PCL nanotubes. Then, we performed immunohistochemical and histopathologic examinations, as well as the electromyography, in three groups: the control group (14 sciatic nerves transplanted with the PCL nanotube scaffold), the experimental group I (14 sciatic nerves with the non-differentiated ADSCs at a density of 7×10(5) cells/0.

Comparative study of the effectiveness and safety of porcine and bovine atelocollagen in Asian nasolabial fold correction.

Bovine-derived collagen has been used for soft-tissue augmentation since 1977. However, there are issues regarding the possibility of bovine spongiform encephalopathy (BSE). Researchers discovered that the histologic structure of porcine-derived collagen is similar to that of human dermal collagen and that it is free from the risk of BSE.

Nodular Fasciitis of the Periorbital Area.

Nodular fasciitis is a reactive, non-neoplastic lesion that is most commonly found in the subcutaneous or superficial fascia of the extremities and trunk. Head and neck lesions are relatively uncommon and reports vary from 7% to 15% depending on the authors. Nodular fasciitis grows quickly, and shows a pleomorphic spindle cell pattern with increased mitotic activity.

Ethmoid sinus osteoma associated with blow-out fracture.

Osteoma is a benign tumor that is composed of compact or cancellous bone. It is the most common benign neoplasm of the paranasal sinus, and ethmoid sinuses are the second most common sites of paranasal sinus osteoma. The symptoms of ethmoid sinus osteoma can give rise to various kinds and extent of symptoms.

Usefulness of vascularized galeal frontalis myofascial flap as treatment for postoperative infection in frontal sinus fracture.

Inappropriate treatments of frontal sinus fractures may lead to serious complications, such as mucopyocele, meningitis, and brain abscess. Assessment of nasofrontal duct injury is crucial, and nasofrontal duct injury necessitates sinus obliteration. For sinus obliteration, autogenous fat, muscle, bone, pericranium grafts, and alloplastic materials, such as Surgicel, hydroxyapatite (Bone Source), and methyl methacrylate, are commonly used.