perichondritis

OBJECTIVE: To investigate MRI findings in children with physeal fractures of the knee with respect to age, location, and articular involvement. METHODS: Children with physeal fractures who underwent knee MRI between 2008 and 2021 were included. Two radiologists retrospectively reviewed all examinations to determine articular involvement, findings of physeal instability (perichondral disruption, periosteal entrapment), and internal derangement (cruciate ligament injury, meniscal tear, chondromalacia)...

BACKGROUND: Postoperative auricular defects heal well with secondary intention healing (SIH); however, potential complications include postoperative pain, perichondritis, and chondritis. OBJECTIVE: To compare postoperative pain and wound healing in auricular defects healing by secondary intention with and without the placement of a porcine xenograft. MATERIALS AND METHODS: Twenty-one subjects were enrolled in the study. The primary outcome was self-reported pain, measured on a 0 to 10 scale for 14 postprocedure days...

We present a case of pinna pressure necrosis secondary to the use of ear magnetic discs, used in the management of auricular haematoma. A man in his 20s sustained a left auricular haematoma while wrestling. His coach aspirated the haematoma and advised the use of commercially available compression magnets on either side of the pinna to prevent haematoma reaccumulation. 5 days later, he presented to accident and emergency with left ear pain and swelling. Perichondritis was evident on examination and the compression magnets were removed to reveal significant pressure necrosis of the pinna...

BACKGROUND: Modified thoracoabdominal nerve block through the perichondrial approach (M-TAPA) is a new technique that provides effective analgesia of the anterior and lateral thoracoabdominal walls by administering local anesthesia only to the underside of the perichondral surface. The primary purpose of the present study was to investigate the postoperative analgesic efficacy of M-TAPA block performed before surgery in patients undergoing laparoscopic cholecystectomy (LC). METHOD: The present study was designed as a double-blind, randomized, controlled, prospective study...

Introduction: Osteochondromas (OCEs) are benign chondrogenic lesions arising on the external surface of the bone with aberrant cartilage (exostosis) from the perichondral ring that may contain a marrow cavity also. In few cases, depending on the anatomical site affected, different degrees of edema, redness, paresthesia, or paresis can take place due to simple contact or friction. Furthermore, depending on their closeness to neurovascular structures, the procedure of excision becomes crucial to avoid recurrence...

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As rhinoplasty is becoming increasingly common, the number of revision cases is also increasing. These cases require more cartilage, and costal cartilage is considered a good material. We introduce a method of harvesting the entire seventh costal cartilage. Methods: This study was performed from April 2019 to March 2020. The seventh costal cartilage was harvested from 156 patients. The incision was placed at the inframammary fold in women and directly above the cartilage in men. The length of incision was approximately 3...

QUESTION: Ear piercing is one of the most common forms of body modification seen in children and adolescents presenting to my office. Parents of my younger pediatric patients inquire about potential post-piercing complications and risk factors associated with earlobe infections. What guidance should I give them? Also, are there any specific post-piercing complications to consider for older pediatric patients seeking second piercings in the upper cartilage area? ANSWER: Piercing the earlobe or auricular cartilage continues to be a popular procedure among children and adolescents...

Auricular perichondritis leading to perichondral abscess is an unusual complication of periauricular surgery. Early identification of the condition with aggressive and timely management is mandated to prevent permanent damage to the auricle. This article demonstrates the first reported case in literature of auricular perichondritis due to Neisseria flava. We discuss the presentation, diagnosis and management of auricular perichondritis in this patient and review mechanisms by which commensals acquire pathogenicity as seen in this report...

Oryzias latipes is increasingly used as a model in biomedical skeletal research. The standard approach is to generate genetic variants with particular skeletal phenotypes which resemble skeletal diseases in humans. The proper diagnosis of skeletal variation is key for this type of research. However, even laboratory rearing conditions can alter skeletal phenotypes. The subject of this study is the link between skeletal phenotypes and rearing conditions. Thus, wildtype medaka were reared from hatching to an early juvenile stage at low (LD: 5 individuals/L), medium (MD: 15 individuals/L), and high (HD: 45 individuals/L) densities...

Palaeospondylus gunni, from the Middle Devonian period, is one of the most enigmatic fossil vertebrates, and its phylogenetic position has remained unclear since its discovery in Scotland in 1890 (ref. 1 ). The fossil's strange set of morphological features has made comparisons with known vertebrate morphotype diversity difficult. Here we use synchrotron radiation X-ray micro-computed tomography to show that Palaeospondylus was a sarcopterygian, and most probably a stem-tetrapod. The skeleton of Palaeospondylus consisted solely of endoskeletal elements in which hypertrophied chondrocyte cell lacunae, osteoids and a small fraction of perichondral bones developed...

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No abstract text is available yet for this article.

No abstract text is available yet for this article.

During development, the embryonic cartilaginous skull in most vertebrates is partially replaced by bones with endochondral and perichondral ossifications. Muscle attachments are thought to influence the patterns of ossification and, hence, the differentiation of the skull. In order to investigate the association between muscle attachments and early ossifications of reptilian embryos, we conducted digital 3D reconstructions of the cranium, the head-, and the neck musculature from a histological section series of a late term embryonic tuatara, Sphenodon punctatus, with a total body length of 52 mm...

Charcot neuropathic arthropathy is a degenerative, debilitating disease that affects the foot and ankle in patients with diabetes and peripheral neuropathy, often resulting in destruction, amputation. Proposed etiologies include neurotraumatic, inflammatory, and neurovascular. There has been no previous animal model for Charcot. This study proposes a novel rodent model of induced neuropathic arthropathy to understand the earliest progressive pathologic changes of human Charcot. High-fat-diet-induced obese (DIO) Wild-type C57BL/6J mice (n = 8, diabetic) and age-matched low-fat-diet controls (n = 6) were run on an inclined high-intensity treadmill protocol four times per week for 7 weeks to induce mechanical neurotrauma to the hind-paw, creating Charcot neuropathic arthropathy...

AIM: To assess the clinical utility of ultrasonography in the diagnosis and monitoring of disease activity in relapsing polychondritis (RP). METHODS: Auricular and nasal chondritis of 6 patients with RP were assessed by ultrasonography before treatment initiation. Changes in the ultrasonographic and clinical findings and serum inflammatory markers were longitudinally assessed. Ultrasonography was also performed in 6 patients with repeat ear trauma, 6 patients with auricular cellulitis and 6 healthy controls for comparison among groups...