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Patellofemoral reconstruction

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https://www.readbyqxmd.com/read/29662782/quantitative-analysis-of-t2-relaxation-times-of-the-patellofemoral-joint-cartilage-3-years-after-anterior-cruciate-ligament-reconstruction
#1
Chang-Wan Kim, Ali Hosseini, Lin Lin, Yang Wang, Martin Torriani, Thomas Gill, Alan J Grodzinsky, Guoan Li
Objective: To evaluate patient-specific patellofemoral joint (PFJ) cartilage 3 years postoperatively using T2 mapping magnetic resonance imaging and the uninjured contralateral side as control. Hypothesis: The cartilage of the PFJ in the anterior cruciate ligament (ACL) reconstructed knees would show increased T2 values compared to the uninjured contralateral knees at 3-year follow-up, and the femoral (trochlear) cartilage would be more susceptible than the patella in degeneration in ACL-reconstructed knees...
January 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29653442/examination-under-anesthesia-in-patients-with-recurrent-patellar-dislocation-prognostic-study
#2
Ismail Fathalla, James Holton, Tanweer Ashraf
Surgical management of patellar instability is a matter of wide debate. While some authors believe that isolated medial patellofemoral ligament (MPFL) reconstruction is sufficient, others advocate procedures to treat the underlying pathology, namely, patella alta and trochlear dysplasia. Radiological studies have been traditionally used as a determinant of these pathologies and to determine the need for an additional procedure. The value of examination under anesthesia (EUA) in formulating a treatment plan remains unknown...
April 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29622265/editorial-commentary-medial-patellofemoral-ligament-reconstruction-alone-works-well-when-the-patient-has-normal-alignment-but-don-t-forget-to-move-the-tibial-tubercle-when-necessary
#3
EDITORIAL
John P Fulkerson
Medial patellofemoral ligament reconstruction works very well, regardless of graft choice, for controlling lateral patella instability when performed correctly in patients with normal alignment, even in the face of trochlea dysplasia. However, sometimes a tibial tubercle transfer is necessary in patella instability surgery.
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29622246/editorial-commentary-knee-medial-patellofemoral-ligament-reconstruction-does-not-always-result-in-the-bee-s-knees
#4
EDITORIAL
Aman Dhawan
Reconstruction of the medial patellofemoral ligament has gained in popularity as a surgical technique to reconcile recurrent lateral patellar instability. This technique has shown success in a variety of settings including with concomitant osseous abnormalities. Despite the general good to excellent results with medial patellofemoral ligament reconstruction, a number of technical errors are still commonly made and may result in decreased range of motion, pain, chondrosis, and arthrofibrosis. In a recent study, the importance of knee flexion angle during final fixation of the graft is emphasized...
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29611848/special-considerations-for-pediatric-patellar-instability
#5
Sean Keyes, Meghan Price, Daniel W Green, Shital N Parikh
Patellar instability in children and adolescents is a challenging subset to treat. Varied forms of instability, ranging from episodic dislocation to fixed dislocation, have been recognized. It is of utmost importance for the treating physician to recognize these different patterns of instability and their associated risk factors, as more complex patterns of instability would require more extensive surgical procedures. Medial patellofemoral ligament (MPFL) reconstruction, by itself, may not suffice or may not be appropriate for the more complex instability patterns...
March 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29611007/femoral-tunnel-widening-is-associated-with-tunnel-malposition-but-not-with-clinical-failure-after-medial-patellofemoral-ligament-reconstruction-with-a-free-gracilis-tendon-graft
#6
Karl-Friedrich Schüttler, A Hoeger, T J Heyse, J Figiel, N Timmesfeld, T Stein, E Ziring, T Efe
INTRODUCTION: MPFL reconstruction is widely and successfully used for treating patella instability, either as a standalone procedure or in combination. Although different techniques allow for MPFL reconstruction, the use of a free tendon graft is one of the most commonly used. The phenomenon of tunnel widening or tunnel enlargement is well described in ACL reconstruction, but so far only little effort has been put into evaluating this phenomenon after MPFL reconstruction. MATERIALS AND METHODS: Patients who received an MPFL reconstruction with a free gracilis tendon graft were identified by review of patient files...
April 2, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29569702/an-anatomical-study-of-the-origin-structure-and-insertion-of-the-medial-patellofemoral-ligament
#7
Chang-Hui Li, David Ricketts, Xi-Shan Wang, Teng-Bo Yu, Chao Qi, Yong-Le Zhu
BACKGROUND: Repair and reconstruction of the medial patellofemoral ligament (MPFL) has been undertaken for the treatment of patellar instability. For successful surgery detailed knowledge of the anatomy of the ligament is required. The aim of this study was to describe the origin, structure and insertion of the MPFL. MATERIALS AND METHODS: We studied cadaveric knees from 30 Chinese adults. We studied the origin, course and insertion of the MPFL. RESULTS: We found that the MPFL was composed of two main strands, superficial and deep...
March 23, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29554436/biomechanical-evaluation-of-the-medial-stabilizers-of-the-patella
#8
Matthew D LaPrade, Samantha L Kallenbach, Zachary S Aman, Gilbert Moatshe, Hunter W Storaci, Travis Lee Turnbull, Elizabeth A Arendt, Jorge Chahla, Robert F LaPrade
BACKGROUND: Quantification of the biomechanical properties of each individual medial patellar ligament will facilitate an understanding of injury patterns and enhance anatomic reconstruction techniques by improving the selection of grafts possessing appropriate biomechanical properties for each ligament. PURPOSE: To determine the ultimate failure load, stiffness, and mechanism of failure of the medial patellofemoral ligament (MPFL), medial patellotibial ligament (MPTL), and medial patellomeniscal ligament (MPML) to assist with selection of graft tissue for anatomic reconstructions...
March 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29552477/sulcus-deepening-trochleoplasty-and-medial-patellofemoral-ligament-reconstruction-for-recurrent-patellar-instability
#9
Michael S Laidlaw, Scott M Feeley, Jeffrey R Ruland, David R Diduch
There are multiple etiologies for recurrent patellar instability. While patella alta, an elevated tibial tubercle trochlear groove distance, and prior lateral patellar dislocations with medial patellofemoral ligament (MPFL) insufficiency have been shown to be risk factors for recurrent patellar instability, trochlear dysplasia can result in a significant impediment to normal patellar tracking. With the adequate identification of risk factors, appropriate surgical treatments can be individually tailored to the patient...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29544985/dynamic-tracking-influenced-by-anatomy-following-medial-patellofemoral-ligament-reconstruction-computational-simulation
#10
John J Elias, Kerwyn C Jones, S Cyrus Rezvanifar, Joseph N Gabra, Melanie A Morscher, Andrew J Cosgarea
BACKGROUND: Continued patellar instability can occur following medial patellofemoral ligament (MPFL) reconstruction. Computational simulation of function was used to investigate the influence of the lateral position of the tibial tuberosity, trochlear dysplasia and patella alta on lateral patellar tracking following MPFL reconstruction. METHODS: Multibody dynamic simulation models were developed to represent nine knees being treated for recurrent patellar instability...
March 12, 2018: Knee
https://www.readbyqxmd.com/read/29543512/ten-year-outcomes-and-risk-factors-after-anterior-cruciate-ligament-reconstruction-a-moon-longitudinal-prospective-cohort-study
#11
Kurt P Spindler, Laura J Huston, Kevin M Chagin, Michael W Kattan, Emily K Reinke, Annunziato Amendola, Jack T Andrish, Robert H Brophy, Charles L Cox, Warren R Dunn, David C Flanigan, Morgan H Jones, Christopher C Kaeding, Robert A Magnussen, Robert G Marx, Matthew J Matava, Eric C McCarty, Richard D Parker, Angela D Pedroza, Armando F Vidal, Michelle L Wolcott, Brian R Wolf, Rick W Wright
BACKGROUND: The long-term prognosis and risk factors for quality of life and disability after anterior cruciate ligament (ACL) reconstruction remain unknown. Hypothesis/Purpose: Our objective was to identify patient-reported outcomes and patient-specific risk factors from a large prospective cohort at a minimum 10-year follow-up after ACL reconstruction. We hypothesized that meniscus and articular cartilage injuries, revision ACL reconstruction, subsequent knee surgery, and certain demographic characteristics would be significant risk factors for inferior outcomes at 10 years...
March 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29514373/long-term-clinical-results-of-double-bundle-reconstruction-of-the-medial-patellofemoral-ligament-for-patellar-instability
#12
Lei Zhang, Zhiyao Li
Medial patellofemoral ligament (MPFL) reconstruction is a satisfactory technique for patellar instability, and the anatomical double bundle variant is recommended for better clinical results. However, long-term outcomes are still uncharacterized. This study aimed to assess the effectiveness of double bundle reconstruction of the MPFL for patellar instability by means of established scores. A total of 68 patients with chronic patellar instability who underwent surgery from May 2005 to February 2010 were included prospectively...
March 7, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29492253/case-report-of-a-ruptured-endobutton-used-in-medial-patellofemoral-ligament-reconstruction-causing-patellofemoral-impingement
#13
Raashad Hasan, Wiqqas Jamil
The medial patellofemoral ligament (MPFL) is a key soft tissue stabilizer of the medial patella, with deficiency proven to be a key contributor to patellar dislocation. Reconstruction of this ligament has become a widely employed procedure in managing patients with recurrent patellar dislocation, and is also gaining popularity in the setting of primary dislocation. A wide variety of techniques have been described, differing in the type of graft used, sites for fixation and fixation technique. A number of complications have also been reported in the literature, including post-operative stiffness, apprehension, patellar fracture and recurrence of instability and dislocation...
February 2018: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29488245/in-vivo-patellar-tracking-in-individuals-with-patellofemoral-pain-and-healthy-individuals
#14
Fateme Esfandiarpour, Constance M Lebrun, Sukhvinder Dhillon, Pierre Boulanger
Understanding of the exact cause of Patellofemoral Pain has been limited by methodological challenges to evaluate in-vivo joint motion. This study compared six degree-of-freedom patellar motion during a dynamic lunge task between individuals with patellofemoral pain and healthy individuals. Knee joints of eight females with patellofemoral pain and ten healthy females were imaged using a CT scanner in supine lying position, then by a dual-orthogonal fluoroscope while they performed a lunge. To quantify patellar motion, the three-dimensional models of the knee bones, reconstructed from CT scans, were registered on the fluoroscopy images using the Fluomotion registration software...
February 28, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29468171/influence-of-meniscal-and-chondral-lesions-on-patient-reported-outcomes-after-primary-anterior-cruciate-ligament-reconstruction-at-2-year-follow-up
#15
Mark E Cinque, Jorge Chahla, Justin J Mitchell, Gilbert Moatshe, Jonas Pogorzelski, Colin P Murphy, Nicholas I Kennedy, Jonathan A Godin, Robert F LaPrade
Background: Meniscal and chondral lesions are commonly associated with anterior cruciate ligament (ACL) tears, and these lesions may play a role in patient outcomes after ACL reconstruction. Purpose: To determine the effects of the presence and location of meniscal and chondral lesions at the time of ACL reconstruction on patient-reported outcomes at a minimum 2-year follow-up. Study Design: Cohort study; Level of evidence, 3. Methods: Patients with no prior knee surgery who underwent primary ACL reconstruction by a single surgeon between 2010 and 2014 were included in this study...
February 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29466677/analysis-of-graft-length-change-patterns-in-medial-patellofemoral-ligament-reconstruction-via-a-fluoroscopic-guidance-method
#16
Takehiko Matsushita, Daisuke Araki, Yuichi Hoshino, Shinya Oka, Kyohei Nishida, Toshikazu Tanaka, Nobuaki Miyaji, Noriyuki Kanzaki, Kazuyuki Ibaraki, Tomoyuki Matsumoto, Masahiro Kurosaka, Ryosuke Kuroda
BACKGROUND: A fluoroscopic guidance method for medial patellofemoral ligament (MPFL) reconstruction has been widely used to determine the anatomic femoral attachment site. PURPOSE: To examine the graft length change patterns in MPFL reconstruction with a fluoroscopic guidance method. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: Forty-four knees of 42 patients who underwent MPFL reconstruction for the treatment of recurrent patellar dislocation were examined prospectively...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29457397/-reconstruction-of-medial-patellofemoral-ligament-with-tightrope-button-fixation-on-the-femoral-side-for-the-treatment-of-traumatic-patellar-dislocation
#17
Yong-Xiang Zuo, Zi-Ping Ma
OBJECTIVE: To explore the operating procedures and therapeutic effects of medial patellofemoral ligament reconstruction with Tightrope(Arthrex, FL, USA) button fixation at lateral femoral cortex. METHODS: From May 2014 to July 2016, 9 patients with traumatic patellar dislocation were treated. There were 5 males and 4 females, ranging in age from 16 to 47 years old, with an average of 23.7 years old. All the patients underment arthroscopic lateral retinaculum release and joint debridement first...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457386/-treatment-of-habitual-dislocation-of-patella-with-reconstruction-of-medial-patellofemoral-ligament-combined-with-release-of-lateral-retinaculum-and-medial-transfer-and-advancement-of-tibial-tuberosity-under-arthroscopy
#18
Li-Chuang Wu, Hai-Bo Zhou, Chao Zhang, Lei Chen, Cai-Long Liu
OBJECTIVE: To study clinical effects of triad operation including reconstruction of medial patellofemoral ligament, release of lateral retinaculum, Fulkerson tibial tubercle osteotomy, medial transfer and advancement under arthroscopy for the treatment of habitual dislocation of patella. METHODS: From March 2010 to May 2016, 35 patients with habitual patellar dislocation were treated with the triad operation, including 14 males, 21 females, ranging in age from 18 to 38 years old, with an average of 25...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457385/-current-status-and-expectations-in-the-surgical-treatment-of-recurrent-lateral-patellar-dislocation
#19
Zhi-Dong Zhao, Peng-Cui Li, Xiao-Chun Wei
Up to now, surgical treatment of recurrent lateral patellar dislocation mainly includes: medial patellofemoral ligament reconstruction, tibial tubercle osteotomy, trochleoplasty, lateral retinacular release, derotation osteotomy and so on . Clinical reports show that: the use of a single or combined with several methods have achieved ideal short to mid-term clinical outcomes. However, there is no consolidate criterion concerning the choices of different kinds of surgical ways for the treatment of individual recurrent lateral patellar dislocation...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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
#20
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
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