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Patellofemoral reconstruction

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https://www.readbyqxmd.com/read/27928547/relationship-of-acl-injury-and-posterior-tibial-slope-with-patient-age-sex-and-race
#1
Alana Waiwaiole, Ajay Gurbani, Kambiz Motamedi, Leanne Seeger, Myung Shin Sim, Patricia Nwajuaku, Sharon L Hame
BACKGROUND: Posterior tibial slope (PTS) has been proposed as a potential risk factor for anterior cruciate ligament (ACL) injury; however, studies that have examined this relationship have provided inconclusive and sometimes contradictory results. Further characterization of this relationship may enable the medical community to identify individuals at greater risk for ACL injury and possibly characterize an anatomic target during surgical reconstruction. PURPOSE: The primary goal was to investigate the relationship between PTS and ACL injury...
November 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27916577/association-of-fibrosis-in-the-infrapatellar-fat-pad-and-degenerative-cartilage-change-of-patellofemoral-joint-after-anterior-cruciate-ligament-reconstruction
#2
Kyoung Ho Yoon, Dae Hyun Tak, Taeg Su Ko, Sang Eon Park, Juhyun Nam, Sang Hak Lee
BACKGROUND: The purpose of this study was to evaluate the prevalence and risk factor of cartilage degeneration of the patellofemoral joint (PFJ) that was diagnosed by second-look arthroscopy. METHODS: One-hundred and seven patients who underwent ACL reconstruction were evaluated by preoperative MRI, postoperative MRI and second-look arthroscopy. Severity of infrapatellar fat pad (IPFP) fibrosis was evaluated by MRI at an average of 26months after ACL reconstruction...
December 1, 2016: Knee
https://www.readbyqxmd.com/read/27904790/current-concepts-in-the-treatment-of-gross-patellofemoral-instability
#3
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/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
#4
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/27811513/patellofemoral-pain-and-instability-in-adolescent-athletes
#5
Matthew Bessette, Paul Saluan
Injuries and disorders of the patellofemoral joint in the adolescent athlete can encompass a wide spectrum of symptomatology and pathology. Anterior knee pain is a common presenting symptom in sports medicine clinics, and can have numerous underlying etiologies. This activity-related pain may be the manifestation of enthesopathy, tendinopathy, fat pad impingement, or numerous other conditions, but is more commonly related to more subtle skeletal and muscular imbalances. Treatment is typically nonoperative in nature, and excellent results are reported with physical therapy...
December 2016: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/27810430/outcomes-of-surgical-stabilization-in-patients-with-combined-acl-deficiency-and-patellofemoral-instability-a-case-series
#6
Laurie A Hiemstra, Sarah Kerslake, Mark Heard, Gregory Buchko, Mark Lafave
BACKGROUND: The purpose of this study was to assess the disease-specific quality of life, and the objective clinical and functional outcomes of patients with symptomatic ACL deficiency and patellofemoral instability following surgical stabilization of both ligaments. METHODS: Between February 2010 and August 2013, 22 subjects underwent a combined ACL reconstruction and patellofemoral stabilization. The anterior cruciate ligament quality of life questionnaire (ACL-QOL) was completed pre-operatively and two-years post-operatively...
December 2016: Knee
https://www.readbyqxmd.com/read/27796419/results-of-medial-patellofemoral-ligament-reconstruction-compared-with-trochleoplasty-plus-individual-extensor-apparatus-balancing-in-patellar-instability-caused-by-severe-trochlear-dysplasia-a-systematic-review-and-meta-analysis
#7
REVIEW
Peter Balcarek, Stephan Rehn, Nick R Howells, Jonathan D Eldridge, Keisuke Kita, David Dejour, Manfred Nelitz, Ingo J Banke, Delphine Lambrecht, Markus Harden, Tim Friede
PURPOSE: Many studies have reported satisfactory clinical outcomes and low redislocation rates after reconstruction of the medial patellofemoral ligament (MPFL) for the treatment of lateral patellar instability. Despite uncorrected severe trochlear dysplasia (Dejour type B to D) being acknowledged as a major reason for less favourable clinical outcomes and a higher incidence of patellar redislocations after an isolated MPFL reconstruction, the evidence for a deepening trochleoplasty procedure remains scarce in the current literature...
October 27, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27755640/relationship-between-posterior-inferior-tibial-slope-and-bilateral-noncontact-acl-injury
#8
Steven T Hendrix, Austin M Barrett, Bopha Chrea, William H Replogle, Josie M Hydrick, Gene R Barrett
Is there a correlation between increased posterior-inferior tibial slope angle and noncontact anterior cruciate ligament (ACL) injury? Does increasing the posterior-inferior tibial slope angle increase the risk of bilateral ACL injury? A computerized relational database (Access 2007; Microsoft Inc, Redmond, Washington) was used to conduct a retrospective review of patients undergoing bilateral or unilateral ACL reconstruction surgery or treatment by a single surgeon between 1995 and 2013. Included in the study were patients with bilateral and unilateral ACL injuries and patellofemoral pain syndrome with no associated ACL deficiency...
October 18, 2016: Orthopedics
https://www.readbyqxmd.com/read/27709116/dynamic-simulation-of-the-effects-of-graft-fixation-errors-during-medial-patellofemoral-ligament-reconstruction
#9
John J Elias, Michael J Kelly, Kathryn E Smith, Kenneth A Gall, Jack Farr
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction is performed to prevent recurrent instability, but errors in femoral fixation can elevate graft tension. HYPOTHESIS: Errors related to femoral fixation will overconstrain the patella and increase medial patellofemoral pressures. STUDY DESIGN: Controlled laboratory study. METHODS: Five knees with patellar instability were represented with computational models...
September 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27693503/anterior-knee-pain-following-anterior-cruciate-ligament-reconstruction-does-not-increase-the-risk-of-patellofemoral-osteoarthritis-at-15-and-20-year%C3%A2-follow-ups
#10
A G Culvenor, B E Øiestad, I Holm, R B Gunderson, K M Crossley, M A Risberg
OBJECTIVE: To prospectively evaluate the relationship between the presence or persistence of anterior knee pain (AKP) during the first 2-years following anterior cruciate ligament reconstruction (ACLR) and patellofemoral osteoarthritis (PFOA) at 15- and 20-years. DESIGN: This study was ancillary to a long-term prospective cohort study of 221 participants following bone-patellar-tendon-bone ACLR. AKP was assessed at 1- and 2-years post-ACLR using part of the Cincinnati knee score with an additional pain location question (persistence defined as presence at both follow-ups)...
September 30, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27682301/outcomes-of-combined-tibial-tuberosity-transfer-and-medial-patellofemoral-ligament-reconstruction-for-recurrent-patellar-instability
#11
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/27637616/corr-insights-%C3%A2-does-the-utilization-of-allograft-tissue-in-medial-patellofemoral-ligament-reconstruction-in-pediatric-and-adolescent-patients-restore-patellar-stability
#12
Peter D Fabricant
No abstract text is available yet for this article.
September 14, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27631645/origin-and-insertion-of-the-medial-patellofemoral-ligament-a-systematic-review-of-anatomy
#13
Arash Aframian, Toby O Smith, T Duncan Tennent, Justin Peter Cobb, Caroline Blanca Hing
PURPOSE: The medial patellofemoral ligament (MPFL) is the major medial soft-tissue stabiliser of the patella, originating from the medial femoral condyle and inserting onto the medial patella. The exact position reported in the literature varies. Understanding the true anatomical origin and insertion of the MPFL is critical to successful reconstruction. The purpose of this systematic review was to determine these locations. METHODS: A systematic search of published (AMED, CINAHL, MEDLINE, EMBASE, PubMed and Cochrane Library) and unpublished literature databases was conducted from their inception to the 3 February 2016...
September 8, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27600522/biomechanical-and-histological-comparison-between-the-cryopreserved-and-the-lyophilized-gracilis-tendon-allograft-for-mpfl-reconstruction-a-cadaveric-experimental-study
#14
Roberto Negrín, Jaime Duboy, Fernando Olavarría, Mauricio Wainer, Horacio Jimenez, Facundo Las Heras, Nicolas Reyes, Hugo Godoy
BACKGROUND: Medial patellofemoral ligament (MPFL) is the main restrictor of lateral shifting of the patella, contributing by 60 % in the first 20° flexion of the knee. MPFL reconstruction has been performed in order to restore the stability of the patella with good results.Lyophilized Gracilis tendon allograft (LGA) compared to Cryopreserved Gracilis tendon allograft (CGA) has a lower cost, does not require to maintain cooling chain or preparation. The purpose of this study is to compare the histological and biomechanical characteristics of an experimental model of reconstruction of the MPFL in porcine patellas with LGA versus CGA...
December 2016: Journal of Experimental Orthopaedics
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/27574606/lateral-patellofemoral-ligament-reconstruction-to-restore-functional-capacity-in-patients-previously-undergoing-lateral-retinacular-release
#16
Mitch Beckert, Dylan Crebs, Michael Nieto, Yubo Gao, John Albright
AIM: To study patient outcomes after surgical correction for iatrogenic patellar instability. METHODS: This retrospective study looked at 17 patients (19 knees) suffering from disabling medial patellar instability following lateral release surgery. All patients underwent lateral patellofemoral ligament (LPFL) reconstruction by a single surgeon. Assessments in all 19 cases included functional outcome scores, range of motion, and assessment for the presence of apprehension sign of the patella to determine if LPFL reconstruction surgery was successful at restoring patellofemoral stability...
August 16, 2016: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/27565481/an-evaluation-of-the-effectiveness-of-medial-patellofemoral-ligament-reconstruction-using-an-anatomical-tunnel-site
#17
Kars P Valkering, Aysha Rajeev, Nick Caplan, Wim E Tuinebreijer, Deiary F Kader
PURPOSE: Medial patellofemoral ligament (MPFL) reconstruction for recurrent patellar instability has gained popularity, and anatomical and biomechanical studies have recently altered our operative techniques. The aim of this study was to report the clinical outcome of this new anatomical MPFL reconstructive technique and investigate whether correlating factors could be identified. METHODS: Between 2009 and 2012, a total of 31 consecutive patients underwent MPFL reconstruction using an autologous gracilis graft and anatomical tunnel placement...
August 26, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27544885/outcome-of-cartilage-at-12years-of-follow-up-after-anterior-cruciate-ligament-reconstruction
#18
O Cantin, S Lustig, F Rongieras, D Saragaglia, N Lefèvre, N Graveleau, C Hulet
INTRODUCTION: In cases of chronic anterior laxity, reconstruction of the anterior cruciate ligament (ACL) can slow the development of osteoarthritis. This study was conducted to determine the overall prevalence of osteoarthritis and to identify the risk factors after ACL reconstruction. HYPOTHESIS: Meniscus tears, time from injury to surgery, body mass index (BMI), residual laxity, and cartilage lesions influence the progression towards osteoarthritis. MATERIALS AND METHODS: This multicenter, retrospective study on the outcome of cruciate ligaments at 12 years of follow-up was conducted within the 2014 SOFCOT Symposium...
August 17, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27544273/patellar-tracking-after-isolated-medial-patellofemoral-ligament-reconstruction-dynamic-evaluation-using-computed-tomography
#19
Riccardo G Gobbi, Marco K Demange, Luiz Francisco Rodrigues de Ávila, José de Arimatéia Batista Araújo Filho, Ramon Alfredo Moreno, Marco Antônio Gutierrez, Marina de Sá Rebelo, Luis Eduardo Passarelli Tírico, José Ricardo Pécora, Gilberto Luis Camanho
PURPOSE: Medial patellofemoral ligament (MPFL) reconstruction offers good clinical results with a very low rate of instability recurrence. However, its in vivo effect on patellar tracking is not clearly known. The aim of this study is to investigate the effects of MPFL reconstruction on patellar tracking using dynamic 320-detector-row CT. METHODS: Ten patients with patellofemoral instability referred to isolated MPFL reconstruction surgery were selected and subjected to dynamic CT before and ≥6 months after surgery...
August 20, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27521477/evaluation-of-the-isometry-of-different-points-of-the-patella-and-femur-for-medial-patellofemoral-ligament-reconstruction
#20
Riccardo Gomes Gobbi, César Augusto Martins Pereira, David Sadigursky, Marco Kawamura Demange, Luis Eduardo Passarelli Tírico, José Ricardo Pécora, Gilberto Luis Camanho
BACKGROUND: The location of patellar and femoral fixation of the graft in medial patellofemoral ligament reconstructions has been widely discussed. This study aimed to assess the distances between different patellar and femoral fixation points to identify the least anisometric pairs of points. METHODS: Ten cadaver knees were attached to an apparatus that simulated an active range of motion of 120°, with three metallic markers fixed onto the medial side of the patella, and seven markings onto the medial epicondyle...
October 2016: Clinical Biomechanics
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