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https://www.readbyqxmd.com/read/29339848/habitual-patellar-dislocation-in-children-results-of-surgical-treatment-by-modified-four-in-one-technique
#1
Ravi Mittal, Avtar Singh Balawat, Vikrant Manhas, Amit Roy, Navin Kumar Singh
Background: Habitual patellar dislocation is a rare condition affecting children. The growth plates are open in children and any surgical intervention should take that in to consideration. We are describing a modified four in one technique for habitual patellar dislocation, which is a soft tissue procedure without the use of any implant. Method: In this study we included 6 children (4 females and 2 males) with open growth plates, which were diagnosed with habitual patellar dislocation...
November 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29337596/the-influence-of-graft-fixation-methods-on-revision-rates-after-primary-anterior-cruciate-ligament-reconstruction
#2
Niclas H Eysturoy, Kåre Amtoft Nissen, Torsten Nielsen, Martin Lind
BACKGROUND: The method of graft fixation in primary anterior cruciate ligament (ACL) reconstruction is important for initial stability of the graft. Poor graft fixation can result in failure of the reconstruction. The effect of ACL graft fixation principles and fixation implant combinations on the risk of revision after ACL reconstruction is not well understood. PURPOSE: The study aimed to compare the risk of revision among 4 categories of femoral fixation divided by their principle of function using a hamstring tendon (HT) graft only...
January 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29335747/patellar-resurfacing-versus-patellar-retention-in-primary-total-knee-arthroplasty-a-systematic-review-of-overlapping-meta-analyses
#3
REVIEW
Alberto Grassi, Riccardo Compagnoni, Paolo Ferrua, Stefano Zaffagnini, Massimo Berruto, Kristian Samuelsson, Eleonor Svantesson, Pietro Randelli
PURPOSE: The need of patellar resurfacing in total knee arthroplasty (TKA) is a subject of debate. This systematic review of overlapping meta-analyses aimed to assess and analyze current evidence regarding patellar resurfacing and non-resurfacing in TKA. METHODS: A systematic literature search was performed in March 2017 in PubMed, CINAHL and Cochrane Library. Inclusion criteria were meta-analysis of randomized controlled trials that compared TKA with and without patellar resurfacing considering as outcomes re-operations rate, complications, anterior knee pain, functional scores...
January 15, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29330345/a-computational-simulation-study-to-determine-the-biomechanical-influence-of-posterior-condylar-offset-and-tibial-slope-in-cruciate-retaining-total-knee-arthroplasty
#4
K-T Kang, Y-G Koh, J Son, O-R Kwon, J-S Lee, S K Kwon
OBJECTIVES: Posterior condylar offset (PCO) and posterior tibial slope (PTS) are critical factors in total knee arthroplasty (TKA). A computational simulation was performed to evaluate the biomechanical effect of PCO and PTS on cruciate retaining TKA. METHODS: We generated a subject-specific computational model followed by the development of ± 1 mm, ± 2 mm and ± 3 mm PCO models in the posterior direction, and -3°, 0°, 3° and 6° PTS models with each of the PCO models...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29327545/-study-on-therapeutic-effects-of-arthroscopic-repair-on-medial-patellar-retinaculum-acute-injury
#5
Min Ren, Ping Zhen, Yu-Jun Fang, Xiao-Long Ren, Chen-Po Dang, Fei-Yi Hou, Shen-Song Li
OBJECTIVE: To accurately define the injury position of medial patellar retinaculum with acute injury under the guiding of high frequency ultrasonography, and to study therapeutic effects of suture operation on medial patellar retinaculum in the injuried position. METHODS: From June 2009 to March 2014, there were 17 patients with acute patellar dislocation, 6 males and 11 females with average age of (16.2±6.2) years old. The duration time of patellar dislocation was 2 weeks...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29325188/comparison-of-radiographic-measurements-of-the-femur-in-yorkshire-terriers-with-and-without-medial-patellar-luxation
#6
Michal Žilinčík, Marián Hluchý, Ladislav Takáč, Valent Ledecký
OBJECTIVE:  This article aimed to compare measurements of anatomical angles of the femurs, based on radiography, in Yorkshire Terriers without or with various grades of medial patellar luxation (MPL) based on radiography. METHODS:  The skeletally mature Yorkshire Terrier dogs without MPL and with various grades of MPL were included in this prospective study. Cases with other orthopaedic disorders were excluded. For inclusion of the dog, it was required that standardized digital radiographs of both femurs in craniocaudal and axial directions were available...
January 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29324527/distal-femoral-valgus-and-recurrent-traumatic-patellar-instability-is-an-isolated-varus-producing-distal-femoral-osteotomy-a-treatment-option
#7
Philip L Wilson, Sheena R Black, Henry B Ellis, David A Podeszwa
BACKGROUND: Genu valgum, a risk factor for recurrent patellofemoral instability, can be addressed with a varus producing distal femoral osteotomy (DFO). The purpose of this study is to report 3-year clinical and radiographic outcomes on a series of skeletally mature adolescents with traumatic patellofemoral instability and genu valgum who underwent a varus producing DFO. METHODS: Consecutive patients (n=11) who underwent an isolated DFO for recurrent traumatic patellar instability over a 4-year study period (2009 to 2012) were reviewed...
January 10, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29322270/recent-developments-in-evaluation-and-treatment-of-lateral-patellar-instability
#8
REVIEW
Alexander Zimmerer, Christian Sobau, Peter Balcarek
Recent years have been characterized by an ongoing increase in knowledge about the different conditions associated with lateral patellar instability. This increase in knowledge provides differentiated approaches to the various pathologies of the patellofemoral joint. Though current guidelines consider medial patellofemoral ligament (MPFL) reconstruction the basic treatment for the unstable patella, medial soft tissue-stabilizing procedures should not be interpreted as stand-alone procedures in every case. The influence of different anatomical factors leading to patellar instability, as well as their impact on clinical outcome measures, is becoming increasingly apparent and deserves further attention...
January 10, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29320945/the-influence-of-exercise-dosing-on-outcomes-in-patients-with-knee-disorders-a-systematic-review
#9
Jodi L Young, Daniel I Rhon, Joshua A Cleland, Suzanne J Snodgrass
Study Design Systematic review. Background Therapeutic exercise is commonly used to treat individuals with knee disorders, but dosing parameters for optimal outcomes are unclear. Large variations exist in exercise prescription, and research related to specific dosing variables for knee osteoarthritis, patellar tendinopathy and patellofemoral pain syndrome is sparse. Objectives To identify specific doses of exercise related to improved outcomes of pain and function in individuals with common knee disorders, categorized by effect size...
January 10, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29312853/deepening-trochleoplasty-combined-with-balanced-medial-patellofemoral-ligament-reconstruction-for-an-adequate-graft-tensioning
#10
Lars V von Engelhardt, Pia Weskamp, Matthias Lahner, Gunter Spahn, Joerg Jerosch
AIM: To evaluate our modified deepening trochleoplasty combined with a balanced medial patellofemoral ligament (MPFL) reconstruction for soft tissue alignement. METHODS: Thirty-three knees with with recurrent patellar dislocations and a trochlear dysplasia in 30 patients (m/f = 12/21, mean age 24 ± 9 years) underwent a combination of a modified deepening trochleoplasty and a balanced MPFL reconstruction for a medial soft tissue alignement. After a mean follow-up period of 29 ± 23 mo, patients' return to sports, possible complications as well as the clinical outcomes using the Kujala, International Knee Documentation Committee (IKDC) and Lysholm scoring were evaluated...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29312850/anterolateral-rotatory-instability-in-vivo-correlates-tunnel-position-after-anterior-cruciate-ligament-reconstruction-using-bone-patellar-tendon-bone-graft
#11
Yasutaka Tashiro, Ken Okazaki, Koji Murakami, Hirokazu Matsubara, Kanji Osaki, Yukihide Iwamoto, Yasuharu Nakashima
AIM: To quantitatively assess rotatory and anterior-posterior instability in vivo after anterior cruciate ligament (ACL) reconstruction using bone-patellar tendon-bone (BTB) autografts, and to clarify the influence of tunnel positions on the knee stability. METHODS: Single-bundle ACL reconstruction with BTB autograft was performed on 50 patients with a mean age of 28 years using the trans-tibial (TT) (n = 20) and trans-portal (TP) (n = 30) techniques. Femoral and tibial tunnel positions were identified from the high-resolution 3D-CT bone models two weeks after surgery...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29303366/current-clinical-radiological-and-treatment-perspectives-of-patellofemoral-pain-syndrome
#12
Aishwarya Gulati, Christopher McElrath, Vibhor Wadhwa, Jay P Shah, Avneesh Chhabra
Anterior knee pain in active young adults is commonly related to patellofemoral (PF) pain syndrome (PFPS), which can be broadly classified into patellar malalignment and patellar maltracking. PFPS can be caused by a host of miserable malalignments, such as excessive femoral antetorsion, tibial varus / external rotation, knee valgus and pes planus. Radiographic, CT and MRI evaluations are commonly obtained to further elucidate the malalignment and maltracking abnormalities and exclude other related differentials, such as lateral meniscus tear, extensor tendon tear, anterior tenosynovial giant cell tumor and plica syndrome...
January 5, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29302781/a-new-minimally-invasive-surgical-technique-for-medial-retinaculum-repair-following-traumatic-patellar-dislocation
#13
Haim Shtarker, Michael Assaf, Marshall N Deltoff
A new surgical method is introduced offering a less invasive approach to reattach the medial retinaculum following acute patellar dislocation. This retrospective analysis comprised 12 cases of medial retinacular repair in 10 patients. The surgical technique achieved reinforced reattachment of the torn region of the medial retinaculum for improved patellar support and stabilization. During follow-up, no recurrent patellar dislocations occurred, except where one patient reported a subjective feeling of patellar dislocation...
January 4, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29301166/normal-range-of-patellar-tendon-elasticity-using-the-sharewave-elastography-technique-an-in-vivo-study-in-normal-volunteers
#14
Alexandre Hardy, Camille Rodaix, Claudio Vergari, Raphael Vialle
In-vivo investigation of tendon mechanical properties in healthy subjects using Shear Wave Elastography (SWE) techniques is a relatively new field of study. This work aims to evaluate the elastic properties of the patellar tendon in various knee range of flexion. Twenty healthy adult subjects were enrolled in the study. Shear wave speed (SWS) in the patellar tendon was measured in three different positions: Knee extended, knee semi-flexed (30°), and knee flexed (90°). Mean shear modulus was 50.9 +- 33.1 kPa in knee extension position, 137...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29300223/osteotomies-in-patello-femoral-instabilities
#15
David Dejour, Bertrand Le Coultre
Patellar instability is defined by clinical and radiologic criteria. The surgical treatment is aimed at restoring the congruence of the patellofemoral articulation and correcting extensor mechanism malalignment, to prevent recurrence of dislocation. The standard soft-tissue procedures are lateral release and vastus medialis advancement and medial patello femoral ligament plasty. Bony procedures are frequently performed in addition to soft-tissue surgery, to realign the extensor mechanism by means of tibial tubercle medialization, or to correct the patellar index in patella alta...
March 2018: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/29299655/medial-patellofemoral-ligament-reconstruction-in-children-do-osseous-abnormalities-matter
#16
Sebastien Pesenti, Matthieu Ollivier, Jean-Charles Escudier, Mathieu Cermolacce, Alexandre Baud, Franck Launay, Jean-Luc Jouve, Elie Choufani
PURPOSE: Management of post-traumatic patellar instability in children with osseous abnormalities is challenging because of the presence of an open physis. The aim of our study was to compare the rate of recurrence after isolated reconstruction of the medial patellofemoral ligament (MPFL) in children with or without osseous abnormalities. METHODS: The medical records of 25 children (27 knees) with recurrent patellar dislocation were reviewed. Each child underwent an isolated reconstruction of the MPFL using a hamstring graft...
January 4, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29298454/risk-factors-for-contralateral-acl-injury-a-single-institution-case-control-study
#17
Todd P Pierce, Kimona Issa, Kaitlin Cassidy, Anthony Festa, Vincent K McInerney, Anthony J Scillia
Our purpose was to evaluate if there is any association between requiring contralateral anterior cruciate ligament (ACL) reconstruction and various: (1) demographics, (2) patient characteristics, and (3) surgery-specific factors. A prospectively collected database at a single institution was queried to find all patients who underwent primary ACL reconstruction between 2012 and 2014. We identified 312 primary ACL reconstruction patients with a mean age of 24 years and a mean follow-up of 3 years (range, 2-5 years)...
January 3, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29298270/is-the-knee-the-key-to-long-term-gait-function-in-cerebral-palsy-commentary-on-an-article-by-elizabeth-r-boyer-phd-et-al-long-term-outcomes-of-distal-femoral-extension-osteotomy-and-patellar-tendon-advancement-in-individuals-with-cerebral-palsy
#18
https://www.readbyqxmd.com/read/29298258/long-term-outcomes-of-distal-femoral-extension-osteotomy-and-patellar-tendon-advancement-in-individuals-with-cerebral-palsy
#19
Elizabeth R Boyer, Jean L Stout, Jennifer C Laine, Sarah M Gutknecht, Lucas H Araujo de Oliveira, Meghan E Munger, Michael H Schwartz, Tom F Novacheck
BACKGROUND: We examined long-term outcomes across the domains of the International Classification of Functioning, Disability and Health for 2 groups of participants with cerebral palsy who demonstrated crouch gait at clinical gait analysis. One group underwent a distal femoral extension osteotomy with patellar tendon advancement (DFEO + PTA). The other group received other treatments (non-DFEO + PTA). METHODS: Fifty-one participants returned for a long-term gait analysis, physical examination, energy consumption test, knee radiographs, and questionnaires (median, 13 years post-DFEO + PTA or post-baseline [range, 8 to 21 years])...
January 3, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29298161/the-evolving-treatment-patterns-of-ncaa-division-i-football-players-by-orthopaedic-team-physicians-over-the-past-decade-2008-2016
#20
Trevor J Carver, John B Schrock, Matthew J Kraeutler, Eric C McCarty
BACKGROUND: Previous studies have analyzed the treatment patterns used to manage injuries in National Collegiate Athletic Association (NCAA) Division I football players. HYPOTHESIS: Treatment patterns used to manage injuries in NCAA Division I football players will have changed over the study period. STUDY DESIGN: Descriptive epidemiology study. LEVEL OF EVIDENCE: Level 5. METHODS: The head orthopaedic team physicians for all 128 NCAA Division I football teams were asked to complete a survey containing questions regarding experience as team physician, medical coverage of the team, reimbursement issues, and treatment preferences for some of the most common injuries occurring in football players...
January 1, 2018: Sports Health
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