Extended postoperative mandibular reconstructions due to orofacial disease involving the temporomandibular joint (TMJ) in immature patients remain a challenge as a result of ongoing growth, which is usually affected by the disease and treatment. Current reconstructive techniques based fully on alloplastic total joint replacement fail to meet fully the anatomical and functional requirements for the masticatory system and speech development. Fourteen children aged 12.6 ± 2.6 with tumors or congenital deformities affecting the mandible and TMJ were included in the study. Radical surgical treatment according to our own protocol was performed through microvascular anastomotic flap reconstruction of the soft tissues and bones, together with total TMJ custom replacements. Follow-up lasted 2–6 years. During the follow-up, increases in the mandible body (13% growth) and ramus (12% growth) were observed, both of which were related (p < 0.001). This is the first report concerning the immediate reconstruction of the mandible with ramus and total TMJ in children and adolescents that combines a free vascularized graft and total individual prosthesis of the TMJ. The presented technique enabled optimal function of the TMJ, growth of the mandible, and further rehabilitation of the patients. The technique was demonstrated to be safe, reliable, and provide good functional and cosmetic outcomes.
Introduction: The nose is the central and probably the most important anatomical region of the face. Reconstructive surgery after tumor resection in this anatomical region requires from the surgeon knowledge of the anatomy, due to the three-dimensional shape and variety of tissues.
Materials and methods: In the years 2010-2019, 48 patients were treated in the Oncological and Reconstructive Surgery Clinic for extended nasal tumors , who required the use of free microvascular flaps after resection for functional and aesthetic supply of anatomical structures of the nose.
Results: In 48 patients, a total of 92 free microvascular flap were used for nasal reconstruction including: radial forearm free flap in 24 patients, radial forearm free flap with radial bone in 14 patients, auricle free flap in 16 patients, radial forearm free flap in combination with auricle free flap in 7 patients, double auricle free flap in 6 patients, radial forearm free flap in combination with double auricle free flap in 4 patients. Total necrosis of the free flap was noted in 4 cases, partial in 6 patients.
Conclusions: Presented surgical techniques using the microvascular free flaps constitute a recognized method of treatment in the world and should be used in everyday surgeon practice.
Discussion: In the reconstructive nose surgery after extended tumor resections due to cancer, there are no uniform treatment standards and algorithms . The surgeon is often dependent on his knowledge, skills and creative thinking . Presented results in this article allows to obtain optimal functional and aesthetic effects.
Purpose
Managing anterior cruciate ligament (ACL) injuries in skeletally immature patients remains difficult. The main aim of this study was to retrospectively compile normative data on the cross-sectional area (CSA) of the semitendinosus tendon (ST) and the diameter of the ACL in children and young adults.
Methods
Knee magnetic resonance imaging (MRI) examinations were performed for a 2-year period in 132 patients (83 female and 49 male patients). The mean age was 14.9 years (8–18 years). Measurements of the ST CSA were performed on axial views in greyscale by two independent researchers. The ACL diameter was measured as well.
Results
The results show the CSA of the ST was related to age, and its growth was not linear. The highest growth rate of the CSA of the ST occurred at age 12–13 at the level of the femoral growth plate and at the level of the tibial plateau. The growth of the ACL diameter was linear until 18 years of age.
Conclusions
ST growth (measured in CSA increments) is almost complete at the age of 13, even though the growth is not linear. ACL growth measured in diameter increments proceeds linearly from 8 to 18 years of age. MRI is a clinically useful tool for assessing hamstring tendon grafts preoperatively.
Level of evidence
Level III, diagnostic studies
The study proved safety, feasibility, and biocompatibility of PDVG formed on the basis of a silicone-coated, latex catheter in an SDF-1 chemokine-enriched environment. These biological grafts effectively integrated with the native high-pressure arterial environment in an ovine model and provided favorable vascular profile. The potential clinical value of this technology needs to be further elucidated in long-term preclinical and clinical studies.
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