paratenon

OBJECTIVES: To report the discrepancies and agreements between US, MRI and radiography of the hand in PsA, and to compare the sensitivity and specificity of US and radiography to MRI as the gold standard imaging study in PsA. METHODS: All of the 100 prospectively recruited consecutive PsA patients underwent clinical assessment and concomitant radiographic, US and MRI studies of the MCP, PIP and DIP joints of one hand. Synovitis, flexor tenosynovitis, extensor paratenonitis, erosions and bone proliferations were identified and scored...

OBJECTIVE: Open injuries of the Tendoachilles present a challenge to the treating surgeon. Although, common in our setting, there is a paucity of literature regarding management of the same. The purpose of this retrospective study was to analyse the functional outcomes following debridement and primary repair of open tears of the Tendoachilles. MATERIALS AND METHODS: Patients with open tears of the tendoachilles, between January 2012 to January 2017. After obtaining demographic data, including mechanism of injury, all patients were managed by adequate debridement and primary repair, by Pennington's modification of Kessler's technique in a single sitting, paratenon closed circumferentially, plantaris reinforcement used when end to end repair couldn't be achieved...

No abstract text is available yet for this article.

PURPOSE: The aim of the study was to examine the ligaments of the os trigonum. METHODS: The ankle joint magnetic resonance imaging (MRI) of 104 patients with the os trigonum (experimental group) and 104 patients without the os trigonum (control group) were re-reviewed. The connections of the os trigonum and posterior talofibular ligament (PTFL), the fibulotalocalcaneal ligament (FTCL), the paratenon of the Achilles tendon, the posterior talocalcaneal ligament (PTCL), the osteofibrous tunnel of the flexor hallucis longus (OF-FHL) and the flexor retinaculum (FR) were studied...

BACKGROUND: The paratenon is a sheath-like connective tissue that allows the tendon to move with minimal friction. The careful removal of the paratenon along the cruciate ligaments is a critical step of knee surgery. Thus, orthopedic surgeons and interventional radiologists consider the paratenon as a basic anatomical tissue along a ligament, not along a tendon. MATERIALS AND METHODS: We performed macroscopic and histological observations of cruciate ligament-associated paratenons in 43 human fetuses...

This study aimed to characterize porcine Achilles tendon (PAT) in terms of its structural components, vascularity, and resident tendon cells. We found that PAT is composed of a paratenon sheath, a core of fascicles, and an endotenon/interfascicular matrix (IFM) that encases the fascicle bundles. We analyzed each of these three tendon components structurally using tissue sections and by isolating cells from each component and analyzing in vitro. Many blood vessel-like tissues were present in the paratenon and IFM but not in fascicles, and the vessels in the paratenon and IFM appeared to be inter-connected...

OBJECTIVES: To explore the frequency of ultrasound elementary lesions in dactylitis in psoriatic arthritis (PsA), and the reliability of scoring these lesions in a clinical setting. METHODS: In 31 patients with PsA and clinical dactylitis, ultrasound assessment of the affected finger or toe was performed using greyscale and color Doppler mode. One examiner scanned all patients and a second examiner scanned 10 patients for inter-reader reliability. For each digit, the following lesions were evaluated: subcutaneous edema; soft tissue thickening; synovitis of the digital joints; tenosynovitis of the flexor tendon; enthesitis at the deep flexor tendon and the extensor tendon entheses; and paratenonitis of the extensor tendon...

No abstract text is available yet for this article.

PURPOSE: The aim of the study was to map connections within the Kager's fat pad between the structures which limit it. METHODS: A retrospective re-review of 200 ankle magnetic resonance imaging (MRI) examination was conducted. Connections within the Kager's fat pad between the superior peroneal retinaculum, the fibulotalocalcaneal ligament, the posterior talocalcaneal ligament, the flexor hallucis longus, the paratenon of the Achilles tendon, the flexor retinaculum and bones were studied and a model of the connections was constructed...

Since the majority of a tendon's dry weight is collagen fibers, tendon healing consists mainly of collagen repair and observing three-dimensional networks of collagen fibers with scanning electron microscopy (SEM) is optimal for investigating this process. In this report, a cell-maceration/SEM method was used to investigate extrasynovial- tendon (unwrapped tendon in synovial tissue such as the tendon sheath) healing of an injured Achilles tendon in a rat model. In addition, since mechanical stimulation is important for tendon healing, a novel, tensionless, rat lower leg tendon injury model was established and verified by visualizing the structural change of collagen fibers under tensionless conditions by SEM...

The treatment of de-gloving injuries in the lower limb with exposed tendons, bone, and/or nerve is a challenging reconstruction problem. The standard management of de-gloving injuries involve either direct closure if the skin is viable or immediate grafting with the avulsed skin or full- or split-thickness graft when the skin flap is not viable. Alternative methods are flap coverage especially when the underlying structures are not suitable for grafting such as extensive loss of paratenon and/or exposed bone or open joints The use of negative pressure wound therapy (NPWT) followed by use of Integra dermal regeneration template (IDRT) and subsequent split-thickness skin grafting (STSG) as an alternative to the previously mentioned surgical options has been described...

Tendinopathy, tendinitis, tendinosis, paratenonitis-they are not synonymous. Here you'll find a review of their pathophysiology and best approaches to treatment.

Although a diffuse-type giant cell tumor is a rare benign lesion, when it develops it tends to localize to the tendons of the hand and foot. In this study, we report the case of a 41-year-old male patient who was diagnosed with diffuse-type paratenon giant cell tumor involving the Achilles tendon. The duration of the bilateral tumors was 8 years. He visited first affiliated Hospital of Wenzhou Medical University for medical attention. Both his Achilles tendons required removal. The reconstructed Achilles tendon was replaced using tissue derived from the knee and foot...

Background: We present a mini-open Achilles tendon rupture repair technique, which does not open the paratenon and avoids the sural nerve. We perform it to recover the normal working length of the gastrocnemius-soleus complex musculotendinous unit as well as possible, trying to avoid soft-tissue complications. Description: This repair is performed via a 3-cm-long incision that is placed 4 cm proximal to the Achilles tendon gap. Through this incision, the interval between the superficial fascia of the leg and the paratenon is developed...

Introduction The aim of this study was to determine usability of the reverse dorsal terminal vein flap (hat flap) in the reconstruction of Tamai zone 1 defects. Materials and Methods A total of 31 patients with fingertip amputation in Tamai zone 1 defect in the finger operated upon between 2014 and 2016 were included in this study. Flaps were designed from the proximal end of the nail bed to the middle phalanx according to the defect size. After passing through the skin, the proximal parts of the dorsal vein and branches were knotted...

OBJECTIVE: It has been stated that the distal 1-2 cm of the tibialis posterior tendon (TPT) does not have a tendon sheath but rather a paratenon, and that any fluid seen around this segment on ankle MRI is considered to represent paratendonitis. The prevalence and clinical significance of isolated TPT paratendonitis diagnosed on ankle MRI is unknown. This study aims to correlate the presence of isolated distal segment TPT paratendonitis on ankle MRI, with the presence or absence of medial midfoot pain...

Extracellular matrix (ECM) determines the physiological function of all tissues, including musculoskeletal tissues. In tendon, ECM provides overall tissue architecture, which is tailored to match the biomechanical requirements of their physiological function, i.e. force transmission from muscle to bone. Tendon ECM also constitutes the microenvironment that allows tendon resident cells to maintain their phenotype and that transmits biomechanical forces from the macro-level to the micro-level. The structure and function of adult tendons is largely determined by the hierarchical organization of collagen type I fibrils...

Tendon grafts often need to be harvested for tendon repair in complex hand surgeries. A tendon stripper is an instrument designed for tendon harvesting. In this study, a metal aspiration cannula was used like a stripper, in a simple and reliable way. With this technique, palmaris longus, plantaris and partial flexor carpi ulnaris tendon grafts were harvested from 11 patients. No problems were encountered in terms of graft quality, donor site or damage to adjacent anatomic structures. The quality of the harvested tendons was quite good, without any damage to the paratenon...

Despite the great progress in the field of tendon injuries and chronic tendinopathies in recent years, treatment of these conditions is still challenging. Research utilising animal models is crucial for further advancement in tendon research, with the rabbit being a commonly used species in this field. The objective of the present study was to comprehensively describe the macro- and microanatomy of the common calcanean tendon (tendo Achillei), together with associated structures. Eight female New Zealand rabbits were subjected to anatomical dissection and histologic analysis, revealing significant species-specific features...

Presented is the case of an obese, 72 year-old diabetic man with a dorsal foot de-gloving injury. Whilst the tendons of extensor hallucis longus, extensor digitorum longus to all digits, and extensor digitorum brevis to hallux and second toe were intact after surgical debridement, none had any covering paratenon. The joint between the medial cuneiform and first metatarsal was open. Reconstructive options were limited by his age and co-morbidities. A novel, completely synthetic dermal matrix (NovoSorb BTM) was applied, after which the patient was discharged home to attend for dressings and review of integration progress as an outpatient...