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Patellofemoral reconstruction

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https://www.readbyqxmd.com/read/29424178/-reconstruction-of-medial-patellofemoral-ligament-with-transposition-of-great-adductor-muscular-tendon-for-the-treatment-of-teenagers-recurrent-patellar-dislocation
#1
Chuan-Qiang Shao, Chang-Chun Chen, Chun-Cheng Zhao, Hong-Mei Yang, Yan-Zhong Kang
OBJECTIVE: To investigate surgical method and clinical curative effects of medial patellofemoral ligament (MPFL) reconstruction with great adductor muscular tendon in treating teenagers' recurrent patellar dislocation. METHODS: From May 2012 to September 2014, 19 patients with recurrent dislocation of patellar, including 6 males and 13 females with an average of 16 years old (ranged from 13 to 17 years), the courses of disease ranged from 3 to 18 months(averaged 6 months)...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29413194/editorial-commentary-medial-patellofemoral-ligament-reconstruction-for-knee-patellar-instability-when-are-soft-tissue-procedures-not-enough
#2
EDITORIAL
Miho J Tanaka
Medial patellofemoral ligament reconstruction is commonly performed to treat patellofemoral instability by recreating the static soft tissue restraint to lateral patellar translation. Concurrent tibial tuberosity osteotomy can be indicated in the setting of bony malalignment, such as a lateralized tuberosity or patella alta; however, the exact indications for this have been difficult to define due to the multifactorial nature of this problem. Understanding the role of tuberosity lateralization and patella alta on the function of medial patellofemoral ligament grafts can help to identify the interplay of some factors that contribute to patellar stability and improve our understanding of when and how concurrent tibial tuberosity osteotomy may be indicated...
February 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29410197/patellofemoral-reconstruction-for-patellar-instability-with-patella-alta-in-middle-aged-patients-clinical-outcomes
#3
S Otsuki, Y Okamoto, T Murakami, K Nakagawa, N Okuno, H Wakama, M Neo
INTRODUCTION: Although several surgical treatments for patellar instability with patella alta have been reported, the clinical outcomes and optimal surgical procedures for patellar instability with patella alta in middle-aged patients are still controversial. We hypothesized that optimal surgical procedures for patellar instability with patella alta in middle-aged patients may induce good clinical outcomes with better patellofemoral geometry. MATERIALS AND METHODS: Twelve middle-aged patients with a mean age of 44 years (range: 40-55 years), who presented with patellar instability and patella alta, were treated with a combination of several surgeries, such as medial patellofemoral ligament (MPFL) reconstruction, trochleoplasty, lateral release, and three-dimensional transfer of the tibial tuberosity, based on a surgical algorithm...
February 1, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29399590/medial-patellofemoral-ligament-reconstruction-reduces-radiographic-measures-of-patella-alta-in-adults
#4
Jarret M Woodmass, Nick R Johnson, Robert A Cates, Aaron J Krych, Michael J Stuart, Diane L Dahm
Background: Patellar height has long been considered a risk factor for patellofemoral instability. However, recent pediatric literature demonstrated a reduction in patellar height measurements following medial patellofemoral ligament (MPFL) reconstruction. Purpose: To assess the mean change in patellar height and the percentage of skeletally mature patients with patellar height ratios reduced to within-normal limits following MPFL reconstruction. Study Design: Case series; Level of evidence, 4...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29397287/clinical-outcomes-after-arthroscopic-release-of-patellofemoral-arthrofibrosis-in-patients-with-prior-anterior-cruciate-ligament-reconstruction
#5
Sean P Calloway, Clinton J Soppe, Bert R Mandelbaum
PURPOSE: The purpose of this study was to review our results of arthroscopic release in patients diagnosed with refractory patellofemoral arthrofibrosis (PFA) after having undergone anterior cruciate ligament (ACL) reconstruction. METHODS: From 2006 to 2016, all patients who underwent arthroscopic release for refractory PFA after ACL reconstruction were reviewed retrospectively. All patients then completed surveys containing the International Knee Documentation Committee (IKDC) and the Western Ontario and McMaster Universities Arthritis Index (WOMAC) and were asked 2 subjective questions...
January 31, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29372384/validation-of-the-german-version-of-the-kujala-score-in-patients-with-patellofemoral-instability-a-prospective-multi-centre-study
#6
D Dammerer, M C Liebensteiner, U M Kujala, K Emmanuel, S Kopf, F Dirisamer, J M Giesinger
INTRODUCTION: The Kujala score is the most frequently used questionnaire for patellofemoral disorders like pain, instability or osteoarthritis. Unfortunately, we are not aware of a validated German version of the Kujala score. The aim of our study was the translation and linguistic validation of the Kujala score in German-speaking patients with patella instability and the assessment of its measurement characteristics. MATERIALS AND METHODS: The German Kujala score was developed in several steps of translation...
January 25, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29366741/graft-choice-in-isolated-medial-patellofemoral-ligament-reconstruction-a-systematic-review-with-meta-analysis-of-rates-of-recurrent-instability-and-patient-reported-outcomes-for-autograft-allograft-and-synthetic-options
#7
REVIEW
Ryan J McNeilan, Joshua S Everhart, Patrick K Mescher, Moneer Abouljoud, Robert A Magnussen, David C Flanigan
PURPOSE: To determine whether graft selection or patient age affects the following after isolated medial patellofemoral ligament (MPFL) reconstruction: (1) rates of recurrent instability, (2) rates of postoperative complications (other than instability), and (3) subjective symptom improvement. METHODS: A systematic search identified studies reporting outcomes for isolated MPFL reconstruction. Rates of recurrent instability, subjective Kujala knee function scores, and complications were tabulated...
January 20, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29356388/analysis-of-the-moment-arms-and-kinematics-of-ostrich-struthio-camelus-double-patellar-sesamoids
#8
Sophie Regnault, Vivian R Allen, Kyle P Chadwick, John R Hutchinson
The patella ("kneecap") is a biomechanically important feature of the tendinous insertion of the knee extensor muscles, able to alter the moment arm lengths between its input and output tendons, and so modify the mechanical advantage of the knee extensor muscle. However, patellar gearing function is little-explored outside of humans, and the patella is often simplified or ignored in biomechanical models. Here, we investigate patellar gearing and kinematics in the ostrich-frequently used as an animal analogue to human bipedal locomotion and unusual in its possession of two patellae at the knee joint...
April 2017: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29354460/reconstruction-of-the-medial-patellofemoral-ligament
#9
Juan C Monllau, Juan I Erquicia, Maximiliano Ibañez, Pablo E Gelber, Federico Ibañez, Angel Masferrer-Pino, Xavier Pelfort
Patellar instability has been shown to be associated with different major factors. However, studies have demonstrated that soft tissue reconstructions are adequate enough to reestablish patellar constraint. In recent years, the medial patellofemoral ligament has been recognized as the primary passive restraint for lateral translation of the patella. Their reconstruction has gain popularity as the procedure is quite simple and fast. Although several surgical techniques have been described for their reconstruction, no clear consensus has been reached as to which is best...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354438/osteotomy-of-the-tibial-tubercle-for-anteromedialization
#10
Márcio B Ferrari, George Sanchez, Nicholas I Kennedy, Anthony Sanchez, Katrina Schantz, Matthew T Provencher
Patellofemoral instability is a common cause of anterior knee pain, especially in younger and more active patients. Treatment of instability varies considerably depending on the patient's symptoms as well as the cause of the instability. Lateral instability has a particularly broad spectrum of treatment algorithms including patellar taping, arthroscopy, lateral release, medial patellofemoral ligament (MPFL) reconstruction, MPFL repair, and osteotomy of the tibial tubercle for realignment. Acute traumatic lateral dislocation is commonly associated with a tear of the MPFL and, therefore, needs to be addressed...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349990/-experimentation-of-the-relationship-between-medial-or-lateral-patellar-stabilizer-and-patellofemoral-stabilization
#11
Xing-Sen Liang, Zheng-Hong Yu, Yi-Kai Li, Ying-Ping Jiang, Xian-Wu Chen, Min Huang
OBJECTIVE: To study the contribution of medial or lateral stabilizer to the stability of the patella, to explore the function and effect of releasing the LPR clinically and to provide a biomechanical basis for the clinical treatment of patellar instability(PI). METHODS: The quadriceps femoris of 6 fresh human cadaver knees were loaded to simulate a normal condition of muscle strength. First the loading force was measured and recorded, which subluxated the patella with the different degrees of knee flexion...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349972/-current-therapy-progress-on-the-recurrent-patellar-dislocation
#12
REVIEW
Wan-Quan Cao, Zi-Quan Yang, Gang Wang, Ya-Xun Men, Xiang-Yun Cheng
Patients who suffer from the recurrent patellar dislocation mainly show the recurrent dislocation of patellar, giving way, most patients have the history of trauma or dysplasia of keen joint. Traditional therapies of recurrent patellar dislocation include medical retinaculum placation, lateral retinaculum release, tibial tubercle osteotomy, femoral trochleoplasty etc. In recent years, with the development of anatomical and biomechanical researches on medial patellofemoral ligament(MPFL), more and more experts focus on the role of MPFL played in preventing the patellar dislocation...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349002/medial-patellofemoral-ligament-reconstruction-using-dual-patella-docking-technique
#13
Hassan Azimi, Oke Anakwenze
Medial patellofemoral ligament (MPFL) injuries are common in children and young adults. In patients with recurrent patellar dislocations with normal lower-extremity alignment, anatomic reconstruction of the MPFL has been shown to restore patellar stability. We describe a technique that creates an anatomic reconstruction using a dual docking technique into the patella. Our technique is simple and efficacious for reconstructing the MPFL without implant fixation in the patella, allowing a maximal bone-tendon interface for healing...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29344696/reconstruction-of-the-medial-patellotibial-ligament-results-in-favorable-clinical-outcomes-a-systematic-review
#14
Charles A Baumann, Eli L Pratte, Seth L Sherman, Elizabeth A Arendt, Betina B Hinckel
PURPOSE: The medial patellotibial ligament (MPTL), the medial patellofemoral ligament (MPFL), and the medial patellomeniscal ligament (MPML) support the stability of the patellofemoral joint. The purpose of this systematic review was to report the surgical techniques and clinical outcomes of the repair or reconstruction of the MPTL in isolation or concomitant with the MPFL and/or other procedures. METHODS: A systematic review of the literature was conducted. Inclusion criteria were articles in the English language that reported clinical outcomes of the reconstruction of the MPTL in isolation or in combination with the MPFL and/or other procedures...
January 17, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29339848/habitual-patellar-dislocation-in-children-results-of-surgical-treatment-by-modified-four-in-one-technique
#15
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/29322270/recent-developments-in-evaluation-and-treatment-of-lateral-patellar-instability
#16
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/29312853/deepening-trochleoplasty-combined-with-balanced-medial-patellofemoral-ligament-reconstruction-for-an-adequate-graft-tensioning
#17
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/29305291/medial-patellofemoral-ligament-reconstruction-impact-of-knee-flexion-angle-during-graft-fixation-on-dynamic-patellofemoral-contact-pressure-a-biomechanical-study
#18
Olaf Lorbach, Nikolaus Zumbansen, Matthias Kieb, Turgay Efe, Antonius Pizanis, Dieter Kohn, Alexander Haupert
PURPOSE: Objective evaluation of the optimal graft tension angle to fully restore patellofemoral contact pressure in reconstruction of the medial patellofemoral ligament (MPFL) in comparison to the native knee. METHODS: Twelve cadaveric knee specimens were fixed in a custom-made fixation device. A sensitive pressure film (Tekscan) was fixed in the patellofemoral joint, and patellofemoral contact pressure was assessed during a dynamic flexion movement from 0° to 90°...
January 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29299655/medial-patellofemoral-ligament-reconstruction-in-children-do-osseous-abnormalities-matter
#19
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/29298083/clinical-outcomes-after-isolated-medial-patellofemoral-ligament-reconstruction-for-patellar-instability-among-patients-with-trochlear-dysplasia
#20
Joseph N Liu, Jacqueline M Brady, Irene L Kalbian, Sabrina M Strickland, Claire Berdelle Ryan, Joseph T Nguyen, Beth E Shubin Stein
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction has become one of the most common and widely used procedures to regain stability among patients with recurrent lateral patellar dislocation. While recent studies demonstrated low recurrence rates, improved patient-reported outcome measures, and a high rate of return to sports, limited literature explored its effectiveness as an isolated intervention in the context of trochlear dysplasia. PURPOSE: To determine the efficacy of isolated MPFL reconstruction in treating patellar instability in the setting of trochlear dysplasia...
January 1, 2018: American Journal of Sports Medicine
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