Objective: To investigate the effects of dicing and different degrees of crushing on cartilage graft viability and outcome in rhinoplasty.
Methods: Cartilage was harvested from both ears of 29 rabbits. For each animal, 6 cartilage pieces were prepared as follows and inserted into the paraspinal subcutaneous tissue: (1) left intact, (2) diced to approximately 1 x 1-mm pieces and then wrapped in oxidized regenerated cellulose, (3) slightly crushed, (4) moderately crushed, (5) significantly crushed, and (6) severely crushed. Animals were killed at 2, 5, and 10 months, and graft specimens were microscopically examined.
Results: As crushing intensity rose, cartilage viability decreased and more cartilage tissue was transformed to connective tissue. The intact and slightly crushed grafts showed significant chondrocyte proliferation. This decreased as crushing intensity increased, and the severely crushed and diced cellulose-wrapped grafts exhibited almost no peripheral chondrocyte proliferation.
Conclusions: Slight crushing of a cartilage graft can produce outstanding graft material that forms softer nasal contours and fills defects well. However, severe crushing of cartilage grafts results in extensive necrosis and eventual reduction in graft volume. The use of oxidized regenerated cellulose to wrap diced cartilage grafts also tends to reduce clinical predictability owing to negative effects on cartilage viability and regeneration.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1001/archfaci.7.1.21 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chondrocutaneous Custom-made Graft for Upper Lateral and Alar Cartilage Nose Reconstruction: The T Graft.
Arch Plast Surg
January 2025
Department of Experimental and Clinical Medicine, Clinic of Plastic and Reconstructive Surgery, Marche Polytechnic University Medical School, Ancona, Italy.
Upper lateral cartilage and alar cartilage nose reconstruction secondary to failed aesthetic procedure or tumor excision, surely represents a reconstructive challenge for plastic surgeons, because of the support needed and for the function of the internal nasal valve (INV). Several scientific publications deal with internal nasal reconstructive techniques, including simple homologous or heterologous tissue grafts. We describe a new hybrid chondrocutaneous graft used for reconstruction of the upper lateral cartilage and a portion of the alar cartilage (cephalic part), excised with the adherent nasal mucosa (in correspondence with INV), included in the tumor mass.
View Article and Find Full Text PDFSurgical Management of Giant Basal Cell Carcinoma in the Maxillofacial Region: Ablative and Reconstructive Strategies.
Ann Plast Surg
January 2025
Department of Ophthalmology, University Hospital Centre Zagreb, Zagreb, Croatia.
Introduction: Giant basal cell carcinoma (GBCC) is a rare and aggressive subtype of basal cell carcinoma (BCC), characterized by a diameter of ≥5 cm and a potential for deep tissue invasion. This study aimed to present our experience with the surgical management of GBCC in the maxillofacial region, focusing on resection and immediate reconstruction strategies.
Methods: We conducted a retrospective analysis of 5926 patients with BCC in the maxillofacial region from 2010 to 2020, with a specific emphasis on 32 patients diagnosed with GBCC.
A shear-responsive and lubricating hyaluronic acid-chondroitin sulfate-decellularized matrix hydrogel for articular cartilage regeneration.
Carbohydr Polym
March 2025
School of Materials Science and Engineering, Nanjing University of Science & Technology, Nanjing 210094, PR China. Electronic address:
The high-dynamic, high-loading environment in the joint cavity puts urgent demands on the cartilage regenerative materials with shear responsiveness and lubrication. Here, a new type of injectable hydrogel composed of oxidized hyaluronic acid (OHA), adipic dihydrazide-grafted hyaluronic acid (HA-ADH), oxidized chondroitin sulfate (OChs), and decellularized extracellular matrix methacrylate (dECMMA) was fabricated. The aldehyde groups in OHA and OChs reacted with the amino groups in HA-ADH to form a dynamic hydrogel, which was then covalently crosslinked with dECMMA to create a dual-crosslinked hydrogel with sufficient mechanical strength.
View Article and Find Full Text PDFTHE SOFT TRIANGLE TENSION GRAFT.
Plast Reconstr Surg
January 2025
Private Practice, Ghavami Plastic Surgery, Beverly Hills, California.
Introduction: Rhinoplasty surgeons often rely on tip grafting in order to add volume in the infratip, mid-tip or supratip areas. The author has developed a novel tip graft, from the repurposed, pliable cephalic margins of the lower lateral cartilage lateral crura. The main purpose of the soft triangle tension graft (STTG) is to control tip tension of the medial crura, buttress the soft triangles and add a small degree of volume to the tip.
View Article and Find Full Text PDFA prospective randomized controlled trial comparing biphasic cartilage repair implant with microfracture in small chondral lesions of knee: findings at five-year-follow-up.
J Orthop Surg Res
January 2025
Department of Orthopedics, Shuang Ho Hospital, Taipei Medical University, 291, Zhongzheng Rd, Zhonghe Dist, New Taipei City, 23561, Taiwan.
Background: Full-thickness cartilage defects have a significant impact on the function of joints in young adults, and the treatment of cartilage defects has been a challenge, as cartilage tissue is an avascular tissue. This study aimed to compare the clinical and radiological outcomes of Biphasic Cartilage Repair Implant (BiCRI) and microfracture treatments for knee cartilage defects.
Methods: This randomized controlled clinical trial enrolled patients with symptomatic knee chondral lesions smaller than 3 cm.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!