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Patellar tendinitis

M Edama, I Kageyama, M Nakamura, T Kikumoto, E Nakamura, W Ito, T Takabayashi, T Inai, H Onishi
In this study, detailed investigations of the shape of the inferior patellar pole, the site of the patellar tendon attachment, and the length and course of the patellar tendon were performed with the aim of examining the anatomical factors involved in the developmental mechanism of patellar tendinitis.  The investigation examined 100 legs from 50 cadavers. The inferior patellar pole was classified into three types: Pointed, Intermediate, and Blunt. The attachment of the patellar tendon to the inferior patellar pole was classified into two types: an anterior and a posterior...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
David Figueroa, Francisco Figueroa, Rafael Calvo
Patellar tendinopathy is a common cause of pain in athletes' knees. Historically, it has been related to jumping sports, such as volleyball and basketball. Repetitive jumping generates a considerable load of energy in the extensor mechanism, leading to symptoms. The main pathophysiologic phenomenon in patellar tendinopathy is tendinosis, which is a degenerative disorder rather than an inflammatory disorder; therefore, the other popular term for this disease, tendinitis, is not appropriate. The nonsurgical treatment of patellar tendinopathy is focused on eccentric exercises and often has good results...
December 2016: Journal of the American Academy of Orthopaedic Surgeons
Haluk Çabuk, Fatmagül Kuşku Çabuk
Proprioceptive inputs from the joints and limbs arise from mechanoreceptors in the muscles, ligaments and tendons. The knee joint has a wide range of movements, and proper neuroanatomical organization is critical for knee stability. Four ligaments (the anterior (ACL) and posterior (PCL) cruciate ligaments and the medial (MCL) and lateral (LCL) collateral ligaments) and four tendons (the semitendinosus (STT), gracilis (GT), popliteal (PoT), and patellar (PaT) tendons) from eight fresh frozen cadavers were harvested...
September 2016: Clinical Anatomy
Alexander Loizides, Carmelo Messina, Bernhard Glodny, Leonhard Gruber, Erich Brenner, Hannes Gruber, Benjamin Henninger
Anatomical variants can be found throughout the whole body. Especially in the knee region, some variability has been reported concerning the osseous, tendinous, and muscular system. Beside a few cases of patellar tendon aplasia, no anatomical variations of this tendon are known. We present a rare case of a doubled patellar tendon as an anatomical variant, which to our knowledge, has not been described previously.
January 2017: Surgical and Radiologic Anatomy: SRA
Lucio Ventura-Ríos, Guadalupe Sánchez-Bringas, Carlos Pineda, Cristina Hernández-Díaz, Anthony Reginato, Magaly Alva, Marcelo Audisio, Ana Bertoli, Tomas Cazenave, Marwin Gutiérrez, Claudia Mora, Guillermo Py, Oscar Sedano, Carla Solano, Eugenio de Miguel
The objective of the present study is to evaluate, by ultrasonography (US), the prevalence in the quadriceps, patellar, and Achilles tendon involvement of gout compared to that of patients with osteoarthritis and asymptomatic marathon runners. This is a multicenter, multinational, transverse cross-sectional, and comparative study comprising 80 patients with the diagnosis of gout according to the American College of Rheumatology (ACR) criteria, compared with two control groups: 35 patients with generalized osteoarthritis according to the ACR criteria and 35 subjects who were healthy marathon runners...
August 2016: Clinical Rheumatology
Betina B Hinckel, Riccardo G Gobbi, Eduardo N Kihara Filho, Marco K Demange, José Ricardo Pécora, Gilberto Luis Camanho
BACKGROUND: The tibial tubercle-trochlear groove (TT-TG) is used as the gold standard for patellofemoral malalignment. PURPOSE: To assess 3 patellar tendon-trochlear groove (PT-TG) angle measurement techniques and the PT-TG distance measurement (tendinous cartilaginous TT-TG) as predictors of patellar instability. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 3. METHODS: Three PT-TG angle measurements and the PT-TG distance were measured in 82 participants with patellar instability and 100 controls using magnetic resonance imaging (MRI)...
September 2015: Orthopaedic Journal of Sports Medicine
Matthew R Garner, Elizabeth Gausden, Marschall B Berkes, Joseph T Nguyen, Dean G Lorich
BACKGROUND: The purpose of our study was to describe and compare extensor mechanism injuries with regard to age, sex, body mass index (BMI), and comorbidities. METHODS: We identified patients who had undergone surgical management of an extensor mechanism injury at two institutions between 1986 and 2012. Data analyzed included age at the time of surgery, sex, height, weight, and the presence of medical comorbidities. Patients with chronic disruption of the quadriceps or patellar tendon, those undergoing revision surgery, or those with injuries in the setting of total knee arthroplasty were excluded...
October 7, 2015: Journal of Bone and Joint Surgery. American Volume
Benjamin Dallaudiere, Liliane Louedec, Marie Paule Jacob Lenet, Lionel Pesquer, Elvind Blaise, Anne Perozziello, Jean Baptiste Michel, Maryse Moinard, Philippe Meyer, Jean Michel Serfaty
PURPOSE: the aim of our study was thus to quantify the effect of Platelet Rich Plasma (PRP) injection on systemic and local growth factors and to identify molecular markers in a rat model of patellar and Achilles tendinosis treated with PRP. MATERIAL AND METHOD: twenty two rats were used for the study. Two healthy rats were used as control (T-). We induced tendinosis (T+) in 20 rats (80 tendons by injecting under ultrasonography (US) guidance Collagenase 1® (day 0 = D0, patellar=40 and Achilles=40)...
April 2015: Muscles, Ligaments and Tendons Journal
Matthias Brockmeyer, Nora Diehl, Cornelia Schmitt, Dieter M Kohn, Olaf Lorbach
PURPOSE: To review the literature concerning surgical treatment options for chronic patellar tendinosis (jumper's knee), a common problem among athletes. When conservative treatment fails, surgical treatment is required. METHODS: Systematic review of the literature concerning the results of current surgical treatment options for chronic patellar tendinosis. All articles of studies with an evidence level ≥IV from January 2000 until February 2015 presenting the surgical outcome after arthroscopic as well as open treatment of chronic patellar tendinosis were included...
December 2015: Arthroscopy: the Journal of Arthroscopic & related Surgery
Jean-François Kaux, Pierre Drion, Jean-Louis Croisier, Jean-Michel Crielaard
OBJECTIVES: The restorative properties of platelets, through the local release of growth factors, are used in various medical areas. This article reviews fundamental and clinical research relating to platelet-rich plasma applied to tendinous lesions. MATERIALS AND METHOD: Articles in French and English, published between 1 January 2012 and 31 December 2014. dealing with PRP and tendons were searched for using the Medline and Scopus data bases. RESULTS: Forty-seven articles were identified which addressed pre-clinical and clinical studies: 27 relating to in vitro and in vivo animal studies and 20 relating to human studies...
2015: Journal of Stem Cells & Regenerative Medicine
F Rieder, H-P Wiesinger, A Kösters, E Müller, O R Seynnes
Animal studies suggest that regular exposure to whole-body vibration (WBV) induces an anabolic response in bone and tendon. However, the effects of this type of intervention on human tendon properties and its influence on the muscle-tendon unit function have never been investigated. The aim of this study was to investigate the effect of WBV training on the patellar tendon mechanical, material and morphological properties, the quadriceps muscle architecture and the knee extension torque-angle relationship. Fifty-five subjects were randomized into either a vibration, an active control, or an inactive control group...
August 2016: Scandinavian Journal of Medicine & Science in Sports
Antonio Crescibene, Marcello Napolitano, Raffaella Sbano, Enrico Costabile, Hesham Almolla
Achilles tendinopathy and patellar tendinopathy are among the most frequent diagnoses in sports medicine. Therapeutic treatment of the disease is difficult, particularly in chronic cases. In literature, several studies suggest the employment of Platelet-Rich Plasma as a therapeutic alternative in tendinopathies. The choice of employing this method is based on the activity of growth factors contained in platelets which activate, amplify, and optimize the healing process. We selected 14 patients affected by Achilles tendinopathy and 7 patients affected by patellar tendinopathy, with a two-year final follow-up...
2015: Journal of Blood Transfusion
Luca Andriolo, Berardo Di Matteo, Elizaveta Kon, Giuseppe Filardo, Giulia Venieri, Maurilio Marcacci
Current research is investigating new methods to enhance tissue healing to speed up recovery time and decrease the risk of failure in Anterior Cruciate Ligament (ACL) reconstructive surgery. Biological augmentation is one of the most exploited strategies, in particular the application of Platelet Rich Plasma (PRP). Aim of the present paper is to systematically review all the preclinical and clinical papers dealing with the application of PRP as a biological enhancer during ACL reconstructive surgery. Thirty-two studies were included in the present review...
2015: BioMed Research International
Savyasachi C Thakkar, Nigel Hsu, Erik A Hasenboehler
Disruptions of the extensor mechanism of the knee may be bony or tendinous in nature. The consequences of such disruptions are not favorable because they prevent normal function of the knee, which is critical for independent ambulation. We report on a 30-year-old man who underwent a successful knee extensor mechanism reconstruction with allograft after his initial tendon repair failed.
June 2015: American Journal of Orthopedics
Tun Hing Lui, Man Wai Lee
Synovial lipoma of the patellar tendon is a very rare entity. It can be associated with rupture of the patellar tendon. We present a case of synovial lipoma that was successfully resected endoscopically. The other indications for patellar tendoscopy include chronic patellar tendinitis and tendinosis, recalcitrant bursitis around the tendon, Osgood-Schlatter disease, and jumper's knee. The major potential danger of this endoscopic procedure is iatrogenic damage to the patellar insertion during endoscopic debridement in patients with jumper's knee or the tibial insertion during endoscopic debridement in patients with Osgood-Schlatter disease...
February 2015: Arthroscopy Techniques
Hua Chen, Liyang Chen, Biao Cheng, Chaoyin Jiang
BACKGROUND/AIMS: Autophagic cell death has recently been implicated in the pathophysiology of tendinopathy. Prostaglandin E2 (PGE2), a known inflammatory mediator of tendinitis, inhibits tenofibroblast proliferation in vitro; however, the underlying mechanism is unclear. The present study investigated the relationship between PGE2 production and autophagic cell death in mechanically loaded human patellar tendon fibroblasts (HPTFs) in vitro. METHODS: Cultured HPTFs were subjected to exogenous PGE2 treatment or repetitive cyclic mechanical stretching...
2015: Cellular Physiology and Biochemistry
Nancy A Chauvin, Victor Ho-Fung, Diego Jaramillo, J Christopher Edgar, Pamela F Weiss
BACKGROUND: Tendon insertion pathologies such as enthesitis and apophysitis in children can result from trauma, overuse syndrome and arthritis. Knowledge of the US appearance of normal joints by age might aid diagnosis of pathologies. OBJECTIVE: We describe the age-related sonographic features of the elbows, knees and feet in healthy children, providing a reference for the normal appearance of tendon insertions, apophyseal cartilage and bursae. MATERIALS AND METHODS: This is a prospective cross-sectional study of 30 healthy children...
August 2015: Pediatric Radiology
Betina Bremer Hinckel, Riccardo Gomes Gobbi, Eduardo Noda Kihara Filho, José Ricardo Pécora, Gilberto Luis Camanho, Marcelo Bordalo Rodrigues, Marco Kawamura Demange
OBJECTIVE: To verify whether the tibial tuberosity-trochlear groove distance (TT-TG) and the tendinous-cartilaginous TT-TG (the distance between the patellar tendon and trochlear groove: PT-TG) are identical using computed tomography (CT) and magnetic resonance imaging (MRI) techniques. SUBJECTS AND METHODS: The TT-TG and PT-TG distances were measured on the same knee samples by three observers (two measurements per observer) using CT and MRI scans collected retrospectively...
August 2015: Skeletal Radiology
Edith M Heintjes, Marjolein Berger, Sita M A Bierma-Zeinstra, Roos M D Bernsen, Jan A N Verhaar, Bart W Koes
No abstract text is available yet for this article.
2015: Cochrane Database of Systematic Reviews
Benjamin Dallaudiere, Olivier Zurlinden, Anne Perozziello, Lydia Deschamps, Ahmed Larbi, Liliane Louedec, Lionel Pesquer, Yohan Benayoun, Alain Silvestre, Jean Michel Serfaty
PURPOSE: the aim of our study was to assess the potential of combined intratendinous injection of an anti-angiogenic drug: bevacizumab (AA) and Platelet Rich Plasma (PRP) to treat tendinopathy in a murine model of patellar and Achilles tendinopathy, and to evaluate its local toxicity. MATERIAL AND METHOD: twenty rats (80 patellar and Achilles tendons) were used for the study. We induced tendinosis (T+) in 80 tendons (patellar=40 and Achilles=40) by injecting under ultrasonography (US) guidance Collagenase 1® (day 0 = D0)...
July 2014: Muscles, Ligaments and Tendons Journal
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