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https://www.readbyqxmd.com/read/27916579/distal-patellar-tendon-avulsion-in-association-with-high-energy-knee-trauma-a-case-series-and-review-of-the-literature
#1
Brian Capogna, Eric Strauss, Sanjit Konda, Alan Dayan, Michael Alaia
BACKGROUND: Patellar tendon rupture is rare in the general population. Typically, failure occurs proximally or at the mid-substance. Distal avulsion from the tibial tubercle in adults is rare and not well described in the orthopedic literature. METHODS: We present the largest series of patients with distal patellar tendon injury with associated multi-ligamentous disruption of the knee. A series of six patients with distal patellar tendon avulsion were identified at a single institution...
December 1, 2016: Knee
https://www.readbyqxmd.com/read/27904790/current-concepts-in-the-treatment-of-gross-patellofemoral-instability
#2
Grant Buchanan, LeeAnne Torres, Brian Czarkowski, Charles E Giangarra
: Patellofemoral instability is a painful and commonly recurring condition, which often must be managed surgically. Diagnosis can be aided by the use of a variety of physical exam signs, such as the Q angle, Beighton hypermobility score, glide test, J sign, patellar tilt test, and apprehension test. Imaging modalities including x-ray, CT, and MRI guide both diagnosis and management by revealing trochlear dysplasia, bony malalignment, and ligamentous injury that contribute to instability...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27894178/comparison-of-radiological-parameters-between-normal-and-patellar-dislocation-groups-in-korean-population-a-rotational-profile-ct-based-study
#3
Jatin Prakash, Jong-Keun Seon, Seong-Hwan Woo, Cheng Jin, Eun-Kyoo Song
Purpose: Patellofemoral instability is a common cause of anterior knee pain in adolescents and young adults. Most normal and pathological values for diagnosing patellofemoral instability are based on Western literature. We conducted this radiological study to determine normal values for different patellofemoral parameters in a Korean population and to evaluate their usefulness in diagnosis. Materials and Methods: We retrospectively reviewed the rotational profile computerized tomography (CT) scans of the patellar dislocation and control groups...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27894010/a-magnetic-resonance-imaging-study-of-abnormalities-of-the-patella-and-patellar-tendon-that-predispose-children-to-acute-patellofemoral-dislocation
#4
Barış Yılmaz, Esin Derin Çiçek, Evrim Şirin, Güzelali Özdemir, Özgün Karakuş, Hasan Hilmi Muratlı
This study compared 20 children hospitalised with acute patellofemoral dislocation with an age-matched healthy control group with no history of knee problems or patellar dislocation. The following morphological parameters were significantly different between the groups: the mean patellar width and length, mean sulcus depth, mean patellar tendon width and total patellar volume. The magnetic resonance imaging findings of this study suggested that structurally smaller than normal patella and patellar tendon volumes are predisposing factors for acute patellofemoral dislocation...
November 17, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27842571/medial-patellofemoral-ligament-reconstruction-using-a-bone-groove-and-a-suture-anchor-at-patellar-a-safe-and-firm-fixation-technique-and-3-year-follow-up-study
#5
Hong-De Wang, Jiang-Tao Dong, Shi-Jun Gao
BACKGROUND: Graft fixation is critical to the restoration of the medial patella of femoral ligament function and long-term success. Numerous fixations at the patella have been described, while the complications including patellar fractures, violation of the posterior patella and delay of tendon-to-bone healing remain significant challenges. Here, we describe a safe and firm fixation at the patellar for medial patellofemoral ligament (MPFL) reconstruction and explore the safety angle of drilling the suture anchor at different morphology of the patellar...
November 14, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27818987/total-knee-arthroplasty-with-subvastus-approach-in-patient-with-chronic-post-traumatic-patellar-dislocation
#6
Jader Joel Machado Junqueira, Camilo Partezani Helito, Marcelo Batista Bonadio, Jose Ricardo Pécora, Marco Kawamura Demange
Chronic lateral dislocation of the patella is a rare condition and acquired causes are usually secondary to knee trauma. The neglected chronic dislocation leads to progressive genu valgum and external tibial torsion deformities with subsequent gonarthrosis, which becomes painful and debilitating. There is no consensus regarding treatment of these patients, but total knee arthroplasty (TKA) is a useful therapy in cases of painful symptomatic gonarthrosis. Few reports have shown that subvastus approach and lateral release may be a valid option for TKA, since it allows the correction of valgus deformity and patellar tracking without interrupting vascular blood supply of patella...
September 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/27782936/the-lateral-wedge-augmentation-trochleoplasty-in-a-pediatric-population-a-5-year-follow-up-study
#7
Sébastien Pesenti, Benjamin Blondel, Gregory Armaganian, Sébastien Parratte, Gérard Bollini, Franck Launay, Jean-Luc Jouve
Patellofemoral instability in children requires surgery when recurrent dislocation occurs. The aim of this study is to report the 5-year clinical and radiographic outcomes following lateral wedge augmentation trochleoplasty of the femoral trochlea. This is a review of 23 (mean age: 12.5 years) patients who underwent surgery for recurrent patellar dislocations related to a flat trochlea. In every case, a lateral wedge augmentation trochleoplasty was performed with preservation of the growth plate. This surgery was consistently associated with a soft tissue procedure...
October 25, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27765469/patellar-dislocation-not-the-bees-knees
#8
Martin Duignan, Mary McGibney
BACKGROUND: Patellar dislocations are common, particularly in the adolescent polulation. Registered Advanced Nurse Practitioners are healthcare professionals who can appropriately manage these injuries to minimise the risk of chronicity. METHODS: This is a case study which uses a clinical examplar from the authors practice focusing on the assessment, diagnosis and managment of patellar dislocations. Particular reference is made of the significance of the MPFL. RESULTS: This paper highlights the importance of recognition of appropriate management of patellar dislocations in the ED setting...
October 17, 2016: International Emergency Nursing
https://www.readbyqxmd.com/read/27717972/assessment-of-demographic-and-pathoanatomic-risk-factors-in-recurrent-patellofemoral-instability
#9
Laurie Anne Hiemstra, Sarah Kerslake, Mark Lafave
PURPOSE: The WARPS/STAID classification employs clinical assessment of presenting features and anatomic characteristics to identify two distinct subsets of patients within the patellofemoral instability population. The purpose of this study was to further define the specific demographics and the prevalence of risky pathoanatomies in patients classified as either WARPS or STAID presenting with recurrent patellofemoral instability. A secondary purpose was to further validate the WARPS/STAID classification with the Banff Patella Instability Instrument (BPII), the Marx activity scale and the Patellar Instability Severity Score (ISS)...
October 7, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27703948/recurrent-patellar-instabilty-culminating-in-a-vertically-rotated-and-a-locked-patellar-dislocation-a-rare-entity
#10
Devgan A, Rohilla R, Jain A, Mehta H, Singh S
INTRODUCTION: Locked vertical patellar dislocations are rare and pose a therapeutic challenge. This case is more unusual, as the patient was a known case of recurrent patellar dislocation and presented with an atraumatic locked and vertically rotated patellar dislocation. This type of presentation has never been reported in literature to the best of our knowledge. CASE PRESENTATION: A 14-year-old healthy male child with previous history of recurrent lateral dislocation of patella presented to accident & emergency department with complaints of inability to walk or bear weight on his left lower limb after he spontaneously dislocated his patella while running on uneven ground...
April 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/27699726/modified-elmslie-trillat-procedure-for-recurrent-dislocation-of-the-patella
#11
Genya Mitani, Takashi Maeda, Tomonori Takagaki, Kosuke Hamahashi, Kenji Serigano, Yutaka Nakamura, Masato Sato, Joji Mochida
Many groups have reported good to excellent clinical outcomes of the Elmslie-Trillat (ET) procedure for recurrent dislocation of the patella. However, the mean follow-up period of these studies was no more than 5 years. We hypothesized that the long-term postoperative outcomes of the modified ET procedure for recurrent dislocation of the patella would be acceptable compared with those of other procedures. The long-term postoperative outcomes of patients treated with the modified ET procedure were examined. A total of 31 knees in 27 patients with recurrent dislocation of the patella who underwent a modified ET procedure (without medial capsular plication) were evaluated...
October 3, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27682301/outcomes-of-combined-tibial-tuberosity-transfer-and-medial-patellofemoral-ligament-reconstruction-for-recurrent-patellar-instability
#12
G Pemmaraju, J Bassett, R Abbas, G Nagra, S Chugh, E Mughal
Patellofemoral instability is multifactorial and is associated with pathomechanics secondary to anatomical variance. Surgical management of this problem must be tailored to each patient and a thorough clinical and radiological assessment of the anatomical alignment should be carried out pre-operatively. The aim of this study is to assess the role of medial patellofemoral ligament reconstruction combined with tibial tuberosity transfer in patients with increased tibial tuberosity to trochlear groove (TT-TG) distance...
August 2016: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/27626368/surgical-versus-nonsurgical-treatments-of-acute-primary-patellar-dislocation-with-special-emphasis-on-the-mpfl-injury-patterns
#13
Gang Ji, Shengjie Wang, Xiaomeng Wang, Junhang Liu, Jinghui Niu, Fei Wang
The objective of the present study was to compare the clinical results of the surgical versus nonsurgical treatments of acute primary patellar dislocations with a medial patellofemoral ligament (MPFL) injury in the nonoverlap region with the vastus medialis oblique. In this study, 62 patients with an acute patellar dislocation and a concurrent MPFL injury in the nonoverlap region were randomly divided into two groups based on their birth years (even vs. odd years) and received either surgical or nonsurgical treatment...
September 14, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27613760/morphology-and-anatomic-patellar-instability-risk-factors-in-first-time-traumatic-lateral-patellar-dislocations-a-prospective-magnetic-resonance-imaging-study-in-skeletally-immature-children
#14
Marie Askenberger, Per-Mats Janarv, Throstur Finnbogason, Elizabeth A Arendt
BACKGROUND: The incidence of primary lateral patellar dislocation (LPD) in children aged 9 to 14 years is 0.6 to 1.2 per 1000. Causation is assumed to be multifactorial, including anatomic variants of the patellofemoral (PF) joint that result in a higher risk of LPD. No publication has compared the morphology of the PF joint and anatomic patellar instability risk factors (APIFs) in a primary LPD population versus controls, defining children by skeletal maturity. PURPOSE: To characterize the PF morphology and APIFs (trochlear dysplasia, abnormal lateral patellar tilt, elevated tibial tubercle-trochlear groove [TT-TG] distance, patella alta) through magnetic resonance imaging (MRI) measurements in skeletally immature children with and without a primary LPD and to identify (potential) distinctive differences between these 2 groups...
September 9, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27590642/does-the-utilization-of-allograft-tissue-in-medial-patellofemoral-ligament-reconstruction-in-pediatric-and-adolescent-patients-restore-patellar-stability
#15
Eric Hohn, Nirav K Pandya
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction is one of several surgical procedures used to treat patellofemoral instability. Use of allograft tissue can preserve autogenous tissue and may be preferable in patients with connective tissue disorders or ligamentous laxity. Although there are successful reports in adults, it is unclear if the use of allograft tissue in MPFL reconstruction can restore patellofemoral stability in children and adolescents. QUESTIONS/PURPOSES: (1) Does allograft tissue in MPFL reconstruction in pediatric and adolescent patients restore patellar stability? (2) What complications were associated with allograft MPFL reconstructions in children and adolescents? METHODS: Between June 2012 and August 2015, one surgeon (NKP) performed 26 MPFL reconstructions in 23 patients with gracilis allograft for traumatic patellar instability...
September 2, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27574273/tibial-tubercle-to-trochlear-groove-distance-and-index-in-children-with-one-time-versus-recurrent-patellar-dislocation-a-magnetic-resonance-imaging-study
#16
C S N Yeoh, K Y Lam
PURPOSE: To compare the tibial tubercle to trochlear groove (TT-TG) distance and index using magnetic resonance imaging (MRI) between children with onetime and recurrent patellar dislocation. METHODS: Records of first-time acute patellar dislocations from 2007 to 2012 were reviewed. 20 males and 23 females aged 10 to 17 years at presentation were included for measurements of the bony and cartilaginous-tendon TT-TG distance and index. Recurrent patellar dislocation was defined as having more than one episode of dislocation within 2 years of the index injury...
August 2016: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/27506969/cochrane-in-corr-%C3%A2-surgical-versus-non-surgical-interventions-for-treating-patellar-dislocation-review
#17
Moin Khan, Bruce S Miller
No abstract text is available yet for this article.
November 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27474384/the-relationship-of-the-femoral-physis-and-the-medial-patellofemoral-ligament-in-children-a-cadaveric-study
#18
Kevin G Shea, Alexandra C Styhl, John C Jacobs, Theodore J Ganley, Matthew D Milewski, Peter C Cannamela, Allen F Anderson, John D Polousky
BACKGROUND: Young athletes sustain patellar dislocations in a variety of sports. The medial patellofemoral ligament (MPFL) is a critical structure that functions as an anatomic checkrein to help prevent lateral patellar dislocation. Reconstruction of this ligament is challenging in patients with open physes because of concerns about iatrogenic damage to the femoral physis. PURPOSE: To evaluate the relationship of the distal femoral physis and the MPFL. STUDY DESIGN: Descriptive laboratory study...
November 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27436719/trochleoplasty-as-a-solitary-treatment-for-recurrent-patellar-dislocation-results-in-good-clinical-outcome-in-adolescents
#19
Carlo Camathias, Katrin Studer, Ata Kiapour, Erich Rutz, Patrick Vavken
BACKGROUND: The essential static patellar stabilizer is a normal-shaped trochlear groove. A dysplastic groove destabilizes the patella. Trochleoplasty approaches this underlying condition and reshapes the trochlea. However, studies have reported on trochleoplasty for revision cases or as accompanied by other interventions. The effect of trochleoplasty alone remains unexplained. PURPOSE: To introduce trochleoplasty as a stand-alone treatment for recurrent patellar dislocation and to compare its pre- to postoperative functional and clinical variables...
July 19, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27405577/complications-of-medial-patellofemoral-ligament-reconstruction-using-two-transverse-patellar-tunnels
#20
Loes Schiphouwer, Akkie Rood, Siebren Tigchelaar, Sander Koëter
PURPOSE: The aim of this study was to report the complication rate after a medial patellofemoral ligament (MPFL) reconstruction using transverse patellar tunnels in a retrospective case series performed in a single institution. METHODS: Case series of 179 patients (192 knees) that had an MPFL reconstruction, with or without additional bony realignment procedures, between January 2009 and March 2015. Data were obtained from available patient charts. RESULTS: Thirty-nine complications (20...
July 12, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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