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patellar tumor

Lukas Leitner, Silvia Türk, Martin Heidinger, Bernd Stöckl, Florian Posch, Werner Maurer-Ertl, Andreas Leithner, Patrick Sadoghi
Arthroplasty registers were originally established in Scandinavia to receive clinically relevant information from pooled data, to improve quality and reduce revision surgeries, with socioeconomic benefit. In Austria, where the highest rate of total knee arthroplasties (TKA) per inhabitant of all OECD countries was reached in 2014, arthroplasties are centrally reported since 2009. Study purpose was to perform the first analysis of the Austrian database, aiming to obtain data on trends in arthroplasty in Austria over time in relation to demographic development...
March 16, 2018: Scientific Reports
Steven Slotkin, Andrew Thome, Cassandra Ricketts, Andrew Georgiadis, Aristides Cruz, Mark Seeley
Anterior knee pain (AKP) is a common presenting complaint for pediatricians and orthopaedic surgeons and is often seen in young athletes. AKP is multifactorial and has a broad differential diagnosis. The growth changes, biomechanics, and anatomy around the knee add to the complexity of diagnosis and treatment of AKP. Common causes of AKP include Osgood-Schlatter's disease, patellar tendinitis, and patellofemoral instability. In the diagnosis of AKP, it is important to rule out serious and morbid causes of pain, including infection and tumor...
February 28, 2018: Journal of Knee Surgery
Xiaona Li, Zekun Zhang, Mahrukh Latif, Wei Chen, Jianling Cui, Zhigang Peng
RATIONALE: Undifferentiated high-grade pleomorphic sarcoma (UPS), originated from bone, is a rare tumor, accounting for 2% to 5% of all primary maligment bone neoplasms. Skip lesion can be found in undifferentiated high-grade pleomorphic sarcoma of bone (UPS-B). However, the direct invasion across the articular synovium to bone has not been reported previously. PATIENT CONCERNS: We report an unusual case of a 65-year-old man complained of a year history of pain, swelling, and limitation of activity in the left knee joint...
February 2018: Medicine (Baltimore)
Gang Li, Changxing Shan, Ran Sun, Song Liu, Song Chen, Mingzhi Song, Ming Lu
Although bone tumors are frequently located in the knee area, primary tumors of the patella are rare and patellar metastases are even rarer. Knee pain is the most common complaint of patients with patellar metastases. Owing to the low incidence of patellar metastases, misdiagnosis is not unusual. The present review analyzes ~44 cases of patellar metastases originating from distinct primary sites. Reports of malignant tumors of the lung and kidney metastasizing to the patella were more common than those of other patellar metastases...
February 2018: Oncology Letters
Keiko Amano, Janet L Huebner, Thomas V Stabler, Matthew Tanaka, Charles E McCulloch, Iryna Lobach, Nancy E Lane, Virginia B Kraus, C Benjamin Ma, Xiaojuan Li
BACKGROUND: Anterior cruciate ligament tears can lead to posttraumatic osteoarthritis. In addition to biomechanical factors, changes in biochemical profiles within the knee joint after injury and anterior cruciate ligament reconstruction (ACLR) may play a role in accelerating joint degeneration. Hypothesis/Purpose: It was hypothesized that cartilage matrix composition after ACLR is associated with the degree of inflammatory response after initial injury. This study evaluated the association between the inflammatory response after injury-as indicated by cytokine, metalloproteinase, and cartilage degradation marker concentrations in synovial fluid-and articular cartilage degeneration, measured by T1ρ and T2 quantitative magnetic resonance imaging up to 3 years after ACLR...
January 1, 2018: American Journal of Sports Medicine
Aishwarya Gulati, Christopher McElrath, Vibhor Wadhwa, Jay P Shah, Avneesh Chhabra
Anterior knee pain in active young adults is commonly related to patellofemoral pain syndrome, which can be broadly classified into patellar malalignment and patellar maltracking. Imaging is performed to further elucidate the exact malalignment and maltracking abnormalities and exclude other differentials. This article details the role of the stabilizers of the patellofemoral joint, findings on conventional and multimodality imaging aiding in patellofemoral pain syndrome diagnosis and characterization, and current perspectives of various treatment approaches...
January 22, 2018: British Journal of Radiology
Ömer Faruk Kılıçaslan, Yusuf Alper Katı, Ozkan Kose, Bekir Erol, Arsenal Sezgin Alikanoglu
Giant cell tumor of the tendon sheath (GCTTS) is a benign, proliferative lesion of the synovium of the joint, the bursa, and the tendon sheath. We report a case of intra-articular, localized GCTTS arising from the patellar tendon, which is a rare cause of anterior knee pain. The diagnosis may be delayed due to non-specific symptoms and normal plain radiographic findings. Magnetic resonance imaging (MRI) is diagnostic to detect the lesion, but several other clinical entities and lesions should be evaluated in the differential diagnosis...
September 16, 2017: Curēus
Conglin Ye, Zhiping Luo, Jin Zeng, Min Dai
RATIONALE: Chondrosarcoma, characterized by the production of cartilage matrix, is a common bone tumor, accounting for 20% to 27% of all malignant bone tumors. It often occurs in the cartilage of the pelvis, femur, tibia, and humerus. However, chondrosarcoma of the patella is extremely rare. PATIENT CONCERNS: The present study describes a case of chondrosarcoma affecting the right patella in a 68-year-old woman. The chief complaints were painful swelling and limitation of motion of the right knee for about half a year...
September 2017: Medicine (Baltimore)
Baran Sarıkaya, Nihat Yumuşak, Akın Yigin, Serkan Sipahioğlu, Ünal Yavuz, Mehmet Akif Altay
OBJECTIVES: This study aims to compare the histological healing process and gene expression profile in tendon after the administration of human recombinant epidermal growth factor (hrEGF) and platelet-rich plasma (PRP). MATERIALS AND METHODS: A total of 24 mature New Zealand white rabbits (6-month-old; weight 2.5-3.0 kg) were used in the study. Patellar tendons of rabbits were tenotomized and then repaired. Rabbits were separated into three groups and repair areas were injected with 1 mL hrEGF in group 1 (n=9) and 1 mL PRP in group 2 (n=9)...
August 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
Charles B Chism, Lindsay Crawford, Amanda Tchakarov, Alyaa Al-Ibraheemi, Nicholas M Beckmann
A 4-year-old female was referred to pediatric orthopedic surgery for left leg pain and limping for 3 months following a motor vehicle collision. Recently, the patient's mother had noted left knee swelling and dragging of the left leg when walking. Past medical history was significant for hip dysplasia with slight leg length discrepancy. The patient was otherwise healthy. Physical examination was remarkable for left pre-patellar soft tissue fullness with normal range of motion. There was no warmth or tenderness...
November 2017: Skeletal Radiology
Janelle M Belanger, Thomas P Bellumori, Danika L Bannasch, Thomas R Famula, Anita M Oberbauer
BACKGROUND: Gonadectomy, or neutering, is a very common surgery for dogs having many positive effects on behavior, health, and longevity. There are also certain risks associated with neutering including the development of orthopedic conditions, cognitive decline, and a predisposition to some neoplasias. This study was designed specifically to identify if a correlation exists between neuter status and inherited conditions in a large aggregate cohort of dogs representing many different breeds...
2017: Canine Genetics and Epidemiology
Laura Stone McGuire, Mandana Behbahini, Sumit Das, David Loeffler, Peter Burger, Herbert Engelhard, Tibor Valyi-Nagy, Ankit Mehta
BACKGROUND AND IMPORTANCE: Amputation neuromas consist of non-neoplastic collections of myelinated axons and Schwann cells and typically arise in injured peripheral nerves. Rarely, however, neuromas occur within the spinal cord. Intramedullary amputation neuromas have been described both with and without a history of trauma within the peripheral nervous system. We report a rare case of an isolated intramedullary spinal cord amputation neuroma. CLINICAL PRESENTATION: This 43-year-old man presented with progressive and severe gait deterioration for ~ 7 years...
March 2017: Clinical Neuropathology
Gökhan İlyas, Ali Turgut, Duygu Ayaz, Önder Kalenderer
BACKGROUND: Angiolipomas are benign tumors usually seen in patients during their 2(nd) and 3(rd) decades. The subcutaneous region of the trunk, neck and extremities are the places where they generally settle. There is only one case report on angiolipoma in the knee joint that was resected by arthroscopic procedure in the English literature. CASE REPORT: We present a case of a giant-size multilobular non-infiltrating angiolipoma, extending outside of the right knee joint and causing lateral patellar dislocation in a thirteen-year-old boy...
November 2016: Balkan Medical Journal
Alexander D Liddle
No abstract text is available yet for this article.
November 2016: Annals of Translational Medicine
Thorsten M Seyler, Daniel N Bracey, Johannes F Plate, Mark O Lively, Sandeep Mannava, Thomas L Smith, Justin M Saul, Gary G Poehling, Mark E Van Dyke, Patrick W Whitlock
PURPOSE: To evaluate the biological, immunological, and biomechanical properties of a scaffold derived by architectural modification of a fresh-frozen porcine patella tendon using a decellularization protocol that combines physical, chemical, and enzymatic modalities. METHODS: Porcine patellar tendons were processed using a decellularization and oxidation protocol that combines physical, chemical, and enzymatic modalities. Scaffolds (n = 88) were compared with native tendons (n = 70) using histologic, structural (scanning electron microscopy, porosimetry, and tensile testing), biochemical (mass spectrometry, peracetic acid reduction, DNA quantification, alpha-galactosidase [α-gal] content), as well as in vitro immunologic (cytocompatibility, cytokine induction) and in vivo immunologic nonhuman primate analyses...
February 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
Mingzhi Song, Wei Dai, Ran Sun, Hongfeng Liang, Bingwu Liu, Yuxuan Wu, Kai Ma, Ming Lu
The substance of the patella is an uncommon location for tumor occurrence and development. The present study reports a case of giant cell tumor (GCT) of the patella, combined with an aneurysmal bone cyst (ABC). To the best of our knowledge, this is the second report of GCT with ABC published in English. GCT is the most common type of benign tumor. Secondary ABC is frequently associated with GCT, but this symbiotic tumor rarely occurs in the patella. A 27-year-old male patient was examined at the outpatient clinic, and clinicopathological characteristics of the tumor were observed...
June 2016: Oncology Letters
Abhinav S Bhatnagar, Kaushal Malhan, Sonu Mehta
INTRODUCTION: Osteochondroma (OC) is the most common benign tumor of the skeleton. However, patellar OC is very rare. Only five case reports have been published yet and only 1 after the year 1972. OCs grow during childhood through adolescence, but usually growing ends when the epiphyseal plates close. In an adult, the growth of an OC suggests the diagnosis of malignant transformation to a chondrosarcoma. However, enlargement of a patellar OC reported as benign after skeletal maturity is present in literature...
July 2015: Journal of Orthopaedic Case Reports
André Mathias Baptista, Sylvio Cesar Sargentini, Juan Pablo Zumárraga, André Ferrari De França Camargo, Olavo Pires De Camargo
OBJECTIVE: To obtain epidemiological data from the tumors of the patella diagnosed and treated at the Instituto de Ortopedia e Traumatologia do Hospital das Clínicas da Universidade de São Paulo (IOT-HC-FMUSP) between 1998 and 2015. METHODS: Series of cases with retrospective evaluation of patients diagnosed with tumors located in the patella. The data was obtained from the records and patients' charts at the Department of Pathology of IOT-HC-FMUSP. RESULTS: A total of 2220 medical records from patients with anatomopathological reports were included in the study...
May 2016: Acta Ortopedica Brasileira
Kai Gao, Jiwu Chen, Shiyi Chen, Yunxia Li
Giant cell tumor of the tendon sheath (GCTTS) predominantly occurs in the tendon sheaths of the hand, but rarely in those of the knee. The current study reports the case of a 36-year-old male patient presenting with anterior knee pain. The patient was ultimately diagnosed with GCTTS in the knee mimicking patellar tendinopathy. To the best of our knowledge, this is the first case of its kind. Magnetic resonance imaging revealed a well-defined oval intra-articular lesion located at the proximal segment of the infrapatellar fat pad...
May 2016: Oncology Letters
Clayton C Bettin, John C Weinlein, Patrick C Toy, Robert K Heck
OBJECTIVES: To evaluate outcomes and complications using cemented modular distal femoral replacement in elderly patients with distal femoral fractures. DESIGN: Retrospective chart review, case series. SETTING: A Level 1 and Level 2 trauma center, both tertiary referral hospitals. PATIENTS/PARTICIPANTS: Eighteen patients older than 60 years (average age 77 years) who had cemented distal femoral replacement for distal femoral fractures (comminuted, intraarticular, osteoporotic, arthritic) between 2005 and 2013...
September 2016: Journal of Orthopaedic Trauma
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