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https://www.readbyqxmd.com/read/29138916/lateral-retinaculum-plasty-instead-of-lateral-retinacular-release-with-concomitant-medial-patellofemoral-ligament-reconstruction-can-achieve-better-results-for-patellar-dislocation
#1
Chang Liu, Guman Duan, Yingzhen Niu, Pengkai Cao, Kunpeng Fu, Jinghui Niu, Fei Wang
PURPOSE: To elucidate the outcomes of lateral retinaculum plasty versus lateral retinacular release with concomitant medial patellofemoral ligament (MPFL) reconstruction. METHODS: In a prospective study, 59 patients treated at our institution from 2012 to 2014 were included. The 59 patients were randomly divided into two groups. Group I included 27 patients who underwent lateral retinacular release and MPFL reconstruction. Group II included 32 patients who underwent lateral retinaculum plasty and MPFL reconstruction...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29134368/-patellofemoral-instability
#2
S F Fucentese
Patellofemoral instability is an extremely limiting pathology in young and active patients. Anatomical reasons for patellar instability, such as high-riding patella, elevated distance from the tibial tuberosity to trochlear groove (TTTG), trochlear dysplasia, insufficient medial patellofemoral ligament (MPFL) and malpositioning of the axes and torsion can lead to chronic patellofemoral instability and must be thoroughly analyzed. The first dislocation can be treated conservatively, with the exception of an osteochondral defect...
November 13, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29130878/a-novel-technique-utilizing-a-vastus-lateralis-anchor-in-treatment-of-chronic-patellar-dislocation-after-total-knee-arthroplasty
#3
Allison Mayfield, Vamsi Singaraju, Afshin A Anoushiravani, Zain Sayeed, Jamal K Saleh, Khaled J Saleh
Extensor mechanism complications involving the patella frequently result in total knee arthroplasty (TKA) failure. Postoperative patellar dislocation may be caused by soft tissue imbalance, improper sizing, and position of the prosthesis. This report describes a case of revision TKA requiring several rounds of soft tissue releases in an effort to treat the patient's chronic patellar dislocation. In the process, a novel surgical approach was developed for the surgical management of refractory chronic patellar dislocations...
October 2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/29123919/t2-mapping-and-post-contrast-t1-dgemric-of-the-patellar-cartilage-12-year-follow-up-after-patellar-stabilizing-surgery-in-childhood
#4
Eva Bengtsson Moström, Eveliina Lammentausta, Thröstur Finnbogason, Lars Weidenhielm, Per-Mats Janarv, Carl Johan Tiderius
Background: Cartilage degeneration has been reported after recurrent patellar dislocation. However, effects of surgical stabilization in childhood have not yet been described. Purpose: To examine the cartilage quality in very young adults operated with a patellar stabilizing procedure due to recurrent patellar dislocation in childhood, and evaluate if cartilage quality correlates with clinical parameters and patient-reported outcomes. Material and Methods: Seventeen patients were investigated ≥ 5 years (mean = 11...
October 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29099891/paraskiing-crash-and-knee-dislocation-with-multiligament-reconstruction-and-iliotibial-band-repair
#5
Chase S Dean, Olivia Fernandes, Mark E Cinque, Jorge Chahla, Robert F LaPrade
We describe the diagnosis, treatment, rehabilitation, and complications of a 27-year-old male paraskiier who sustained a closed high-velocity knee dislocation after colliding with a tree at a speed of 45 mph and falling 40 feet to the ground. Extensive surgery to repair and reconstruct the knee included open lateral capsular repair, open anatomical posterolateral corner reconstruction with split Achilles tendon allograft, open iliotibial band reconstruction with Achilles tendon allograft, arthroscopic anterior cruciate ligament reconstruction with bone-patellar tendon-bone autograft, and double-bundle posterior cruciate ligament reconstruction with Achilles tendon allograft for the anterolateral bundle and tibialis anterior tendon allograft for the posteromedial bundle...
September 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29071377/-plate-osteosynthesis-of-patellar-fractures
#6
REVIEW
E C Müller, K-H Frosch
OBJECTIVE: Anatomic reconstruction of the retropatellar articular surface and repair of the extensor mechanism of the knee joint. The osteosynthesis should allow immediate mobilization as part of an early functional postoperative rehabilitation protocol. INDICATIONS: Displaced fractures of the patella, especially multifragment and comminuted fractures with a retropatellar incongruity or dislocation of >2 mm. CONTRAINDICATIONS: Critical local soft tissue because of the risk of postoperative infection...
October 25, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29039139/individualizing-the-tibial-tubercle-to-trochlear-groove-distance-to-patient-specific-anatomy-improves-sensitivity-for-recurrent-instability
#7
Mark J Heidenreich, Thomas L Sanders, Mario Hevesi, Nicholas R Johnson, Isabella T Wu, Christopher L Camp, Diane L Dahm, Aaron J Krych
PURPOSE: An initial episode of patellar instability poses a treatment challenge given the absence of a valid, reproducible, and universally applicable predictor of recurrence. Recently, a series of patellar instability ratios (PIRs) were described. Each ratio consisted of the traditional tibial tubercle to trochlear groove (TT-TG) distance normalized to patient-specific measures. The purpose of this study was to investigate the reliability and validity of these novel measures. METHODS: Eighty-seven patients experiencing a first-time lateral patellar dislocation were identified in a retrospective manner...
October 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28985094/patellar-instability-management-a-survey-of-the-international-patellofemoral-study-group
#8
Joseph N Liu, Michael E Steinhaus, Irene L Kalbian, William R Post, Daniel W Green, Sabrina M Strickland, Beth E Shubin Stein
BACKGROUND: Although patellofemoral instability is among the most prevalent knee disorders, the management of patients with this condition is complex and remains variable, given the lack of long-term, high-level clinical outcome studies to compare various operative and nonoperative modalities. PURPOSE: To discover a consensus within treatment controversies in patellofemoral instability among experienced knee surgeons with a specific interest in the patellofemoral joint...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28970976/medial-patellofemoral-ligament-reconstruction-in-a-revision-setting-anchor-and-interference-screw%C3%A2-fixation
#9
Marcio B Ferrari, George Sanchez, Angela Chang, Sami Ferdousian, Matthew T Provencher
Recurrent patellar instability is a common pathology and typically affects younger and more active patients. To prevent complete lateral dislocation of the patella, several osseous and soft-tissue procedures have been previously described, including reconstruction of the medial patellofemoral ligament (MPFL), which has been identified as the primary medial stabilizer of the patella. Several techniques have been reported for reconstruction of the MPFL, sometimes in conjunction with other procedures, with the majority showing success in the treatment and resolution of patellar instability...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28942027/tibial-tubercle-torsion-a-new-factor-of-patellar-instability
#10
V Chassaing, J-M Zeitoun, M Camara, J-L Blin, S Marque, M-D Chancelier
INTRODUCTION: External torsion of the anterior tibial tubercle (TT), defined as external rotation around a craniocaudal axis with respect to the posterior femoral condylar plane, may induce patellar instability. To our knowledge no studies have focused on this parameter. The present study aimed to perform an MRI analysis of TT torsion. The study hypothesis was that TT torsion correlates with patellar instability and with 3 of its components: tibial tubercle-trochlear groove (TT-TG) distance, axial engagement index of the patella (AEI), and patellar tilt...
September 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28932880/double-bundle-anatomical-medial-patellofemoral-ligament-reconstruction-with-lateral-retinaculum-plasty-can-lead-to-good-outcomes-in-patients-with-patellar-dislocation
#11
Yingzhen Niu, Xinmin Wang, Chang Liu, Xiaomeng Wang, Zhenyue Dong, Jinghui Niu, Fei Wang
PURPOSE: To evaluate the clinical outcomes of double-bundle anatomical medial patellofemoral ligament (MPFL) reconstruction combined with lateral retinaculum plasty versus isolated MPFL reconstruction for patellar dislocation. METHODS: From 2011 to 2013, 64 patients underwent either double-bundle anatomical MPFL reconstruction combined with lateral retinaculum plasty (Group A, 32 patients), or isolated MPFL reconstruction (Group B, 32 patients). Clinical evaluations were performed 2 years post-operatively and included determination of the number of patients with patellar redislocation, the patellar tilt angle, lateral patellar shift, subjective symptoms, and functional outcomes as evaluated with the Kujala score and Lysholm score...
September 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28914334/the-clinical-and-radiological-results-of-individualized-surgical-treatment-depending-on-pathologic-abnormalities-in-recurrent-patellar-dislocation-low-recurrence-rate-but-unintended-patella-baja
#12
Do Kyung Lee, Joon Ho Wang, Seung Hoon Kang, Jun Ho Kim, Russel Haque, Byung Hoon Lee
PURPOSE: To evaluate the clinical and radiological outcomes and chondral lesion change using individualized surgery for recurrent patellar dislocation. METHODS: A total of 31 knees with recurrent patellar dislocation underwent surgery depending on individual pathologic abnormalities. Pathologic abnormalities including medial laxity, lateral tightness, increased tibial tuberosity (TT)-to-trochlear groove distance (>20 mm), and patella alta (Caton-Deschamps ratio >1...
September 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28885967/outcomes-of-medializing-tibial-tubercle-osteotomy-with-medial-reefing-and-vastus-medialis-obliquus-advancement-coupled-with-lateral-retinacular-z-lengthening-for-recurrent-patellar-instability
#13
Patrick Morrissey, Daniel Christensen, Trevor Tompane, Jared Wolfe, Lance LeClere
PURPOSE: Patella-femoral dislocations, although rare, can result in functionally limiting symptoms and limited return to prior activity levels. The purpose of this study is to report outcomes of a three-in-one patellar realignment surgery for treatment of recurrent patellar instability in a young, active duty military population. METHODS: We conducted a retrospective chart review of all patients who underwent our senior author's three-in-one patellar realignment surgery for recurrent patellar instability in the setting of underlying anatomic malalignment...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28884099/medial-patellofemoral-ligament-and-medial-patellotibial-ligament-reconstruction-in-children-preliminary-results
#14
David Sadigursky, Lucas Cortizo Garcia, Maurício Armede, Lucas Rodrigues de Oliveira, Rogério Jamil Fernandes Carneiro, Paulo Oliveira Colavolpe
OBJECTIVE: The aim of this study was to evaluate the reconstruction of the medial patellofemoral ligament associated with the medial patellotibial ligament in skeletally immature patients. METHOD: This is a case series study in patients with patellar instability with open physis. In total, seven patients were evaluated: four males and three females were operated using the proposed technique. Patients with open physis who had more than two episodes of recurring patellar dislocation were included...
June 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28872404/operative-vs-nonoperative-treatment-after-acute-patellar-dislocation-which-is-more-effective-at-reducing-recurrence-in-adolescents
#15
Julie Fuller, Heidi Hammil, Kelly Pronschinske, Chris Durall
Clinical Scenario: Acute patellar dislocation most commonly affects young, active individuals.(1) Regardless of treatment, patellar dislocation may lead to patellofemoral instability. Two common approaches for treating acute patellar dislocation are surgical stabilization and nonoperative treatment via patellar bracing and exercise.(2) This review was conducted to determine if current best evidence supports one of these treatment approaches over the other for reducing dislocation recurrence in adolescents. Focused Clinical Question: In adolescents with acute patellar dislocation, how does operative stabilization compare with nonoperative treatment for reducing dislocation recurrence?...
September 5, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28870759/recurrent-patellar-dislocation-with-spontaneous-valgus-knee-deformity-treated-by-distal-femoral-osteotomy-alone-a-report-of-two-cases
#16
Akemi Suzuki, Yuka Kimura, Eiji Sasaki, Atsushi Narita, Michiaki Takagi, Yasuyuki Ishibashi
No abstract text is available yet for this article.
September 1, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28867290/modified-adductor-sling-technique-a-surgical-therapy-for-patellar-instability-in-skeletally-immature-patients
#17
Lena Alm, Matthias Krause, Carolin Mull, Karl-Heinz Frosch, Ralph Akoto
BACKGROUND: Due to open femoral physis the therapy of patellar instability in skeletally immature patients is challenging. We developed a modified surgical technique of the 'Adductor-Sling-Approach' by Sillanpää. The purpose of this study was to evaluate the clinical outcome of the operative technique and to analyse the reasons for failure. METHODS: Thirty 'modified adductor sling' reconstructions in 28 patients were included in the study. From 2010 to 2016 modified adductor sling reconstruction was performed by looping the gracilis or semitendinosus tendon around the adductor magnus tendon and attaching it at the medial facet of the patella...
August 31, 2017: Knee
https://www.readbyqxmd.com/read/28845005/-treatment-of-patellofemoral-instability-in-adolescent-by-anatomical-double-bundle-medial-patellofemoral-ligament-reconstruction-with-double-suture-anchor-technique
#18
Weihong Zhu, You Chen, Qi Tang, Lele Liao, Ding Li
To explore the clinical outcomes of anatomical double-bundle medial patellofemoral ligament (MPFL) reconstruction with double suture anchor technique in treating patellofemoral instability in adolescent.
 Methods: Twenty-five young people with patellofemoral instability (25 knees) in our department from January 2013 to December 2014 were enrolled for this study. All patients were performed anatomical double-bundle MPFL reconstruction with arthroscopic-assisted suture anchors technique in the patella, and fixed in the femoral socket with absorbable interference screw...
July 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28829620/correlation-of-3d-shift-and-3d-tilt-of-the-patella-in-patients-with-recurrent-dislocation-of-the-patella-and-healthy-volunteers-an-in-vivo-analysis-based-on-3-dimensional-computer-models
#19
Yuzo Yamada, Yukiyoshi Toritsuka, Norimasa Nakamura, Shuji Horibe, Kazuomi Sugamoto, Hideki Yoshikawa, Konsei Shino
BACKGROUND: The concepts of lateral deviation and lateral inclination of the patella, characterized as shift and tilt, have been applied in combination to evaluate patellar malalignment in patients with patellar dislocation. It is not reasonable, however, to describe the 3-dimensional (3D) positional relation between the patella and the femur according to measurements made on 2-dimensional (2D) images. PURPOSE: The current study sought to clarify the relation between lateral deviation and inclination of the patella in patients with recurrent dislocation of the patella (RDP) by redefining them via 3D computer models as 3D shift and 3D tilt...
November 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28801826/brain-activity-changes-in-somatosensory-and-emotion-related-areas-with-medial-patellofemoral-ligament-deficiency
#20
Masaru Kadowaki, Taku Tadenuma, Nobuyuki Kumahashi, Yuji Uchio
BACKGROUND: Patellar instability with medial patellofemoral ligament (MPFL) deficiency is a common sports injury among young people. Although nonoperative and surgical treatment can provide stability of the patella, patients often have anxiety related to the knee. We speculate that neural dysfunction may be related to anxiety in these patients; however, the mechanism in the brain that generates this anxiety remains unknown. QUESTIONS/PURPOSES: (1) How does brain activity in patients with MPFL deficiency change in the areas related to somatic sensation against lateral shift of the patella? (2) How does patella instability, which can lead to continuous fear or apprehension for dislocation, influence brain activity in the areas related to emotion? METHODS: Nineteen patients with MPFL deficiency underwent surgical reconstruction in our hospital from April 2012 to March 2014...
November 2017: Clinical Orthopaedics and related Research
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