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https://www.readbyqxmd.com/read/29145110/traumatic-separation-of-osseous-segments-in-a-double-layered-patella
#1
Andreas Jørgensen, Erik Brandt, Anton Ulstrup
INTRODUCTION: Double-layered patella is a rare intra-articular disorder associated with multiple epiphyseal dysplasia. PRESENTATION OF CASE: We present a case of a 40-year old man with acute pain in his left knee after a tackle during soccer play. DISCUSSION: Clinical examination and radiographs confirmed the diagnosis of a bilateral double-layered patella with traumatic separation of the osseous segments on the afflicted left side. Surgical management comprised of open arthrotomy and debridement of the bony interface...
November 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29140580/enhanced-biological-fixation-of-ligaments-to-bone-tissues-utilizing-chitin-fabrics
#2
Hisaya Nomata, Michiko Nakaishi, Kazuo Takakuda
In ligament reconstruction involving anterior cruciate ligament surgery, biological fixation between the transferred ligament and bone tissue is critical for achieving successful outcomes. Here, we administered chitin fabrics into the bone tunnels and evaluated their efficacy in promoting biological fixation. An animal model on the rat's patellar ligament was employed. First, bone tunnels were created in the lateral condyle of the femur. The ligament was then separated from the tibial tuberosity, and half was inserted into the tunnel and fixed with the use of end button...
November 15, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29140169/relationship-between-physical-therapy-characteristics-surgical-procedure-and-clinical-outcomes-in-patients-after-acl-reconstruction
#3
Ian J Dempsey, Grant E Norte, Matthew Hall, John Goetschius, Lindsay V Slater, Jourdan M Cancienne, Brian C Werner, David R Diduch, Joseph M Hart
CONTEXT: Post-operative rehabilitation is critical to optimize outcomes after anterior cruciate ligament reconstruction (ACLR). However, the relationship between physical therapy (PT) and clinical outcomes is unclear. OBJECTIVE: To describe PT characteristics following ACLR, and assess the relationships between PT characteristics, surgical procedure, and clinical outcomes. DESIGN: Cross-sectional. SETTING: Laboratory...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29140160/clinical-measures-and-their-contribution-to-dysfunction-in-individuals-with-patellar-tendinopathy
#4
Hyunjae Jeon, Melanie L McGrath, Neal Grandgenett, Adam B Rosen
CONTEXT: Patellar tendinopathy is prevalent in physically active populations and it affects their quality of living, performance of activity, and may contribute to the early cessation of their athletic careers. A number of previous studies have identified contributing factors for patellar tendinopathy however their contributions to self-reported dysfunction remain unclear. OBJECTIVE: The purpose of this investigation was to determine if strength, flexibility, and various lower extremity static alignments contributed to self-reported function and influence the severity of patellar tendinopathy...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29138919/low-re-rupture-rate-with-bptb-autograft-and-semitendinosus-gracilis-autograft-with-preserved-insertions-in-acl-reconstruction-surgery-in-sports-persons
#5
Ravi Gupta, Munish Sood, Anubhav Malhotra, Gladson David Masih, Anil Kapoor, Mukta Raghav, Mehar Dhillon
PURPOSE: To compare the results of bone-patellar tendon-bone graft (BPTB), semitendinosus-gracilis graft with preserved insertions (STGPI) and semitendinosus-gracilis-free graft (STGF) in terms of graft failure, objective mechanical stability, functional outcome, and return to sports in elite and recreational sports persons. It was hypothesized that the STGPI graft provided superior outcome as compared to the other two grafts. METHODS: Two hundred and forty-nine elite and recreational players who underwent ACL reconstruction surgery, with BPTB graft (N = 80), STGPI graft (N = 85), and STGF graft (N = 84) with a minimum follow-up of 2 years, were assessed using clinical tests, knee arthrometer (KT 1000™), single-leg hop test, Lysholm knee score, Tegner's activity scale, and return to sports...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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
#6
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/29137665/treatment-for-lateral-patellar-impingement-syndrome-with-arthroscopic-lateral-patelloplasty-a-bidirectional-cohort-study
#7
Tianhao Wu, Shiyu Tang, Fei Wang
BACKGROUND: Anterior knee pain is one of the most common musculoskeletal complaints of young patients. We notice that some patients had normal femoral trochlear, medial and lateral patellar retinaculum, and special patellar morphology, which resulted in a series of symptoms in the flexion of the knee due to the impingement of the lateral articular surface of the patella with the femur. We firstly termed this pathologic process as lateral patellar impingement syndrome (LPIS). This ambispective cohort study was to explore the curative effect of arthroscopic lateral patelloplasty for early LPIS...
November 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29137199/epidemiology-of-bone-fracture-in-female-trauma-patients-based-on-risks-of-osteoporosis-assessed-using-the-osteoporosis-self-assessment-tool-for-asians-score
#8
Cheng-Shyuan Rau, Shao-Chun Wu, Pao-Jen Kuo, Yi-Chun Chen, Peng-Chen Chien, Hsiao-Yun Hsieh, Ching-Hua Hsieh
Background: Osteoporotic fractures are defined as low-impact fractures resulting from low-level trauma. However, the exclusion of high-level trauma fractures may result in underestimation of the contribution of osteoporosis to fractures. In this study, we aimed to investigate the fracture patterns of female trauma patients with various risks of osteoporosis based on the Osteoporosis Self-Assessment Tool for Asians (OSTA) score. Methods: According to the data retrieved from the Trauma Registry System of a Level I trauma center between 1 January 2009 and 31 December 2015, a total of 6707 patients aged ≥40 years and hospitalized for the treatment of traumatic bone fracture were categorized as high-risk (OSTA < -4, n = 1585), medium-risk (-1 ≥ OSTA ≥ -4, n = 1985), and low-risk (OSTA > -1, n = 3137) patients...
November 13, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29134368/-patellofemoral-instability
#9
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/29133002/clinical-characteristics-of-lumbosacral-spinal-dural-arteriovenous-fistula-davf-comparison-to-thoracic-davf
#10
Toshiki Endo, Takumi Kajitani, Tomoo Inoue, Kenichi Sato, Kuniyasu Niizuma, Hidenori Endo, Yasushi Matsumoto, Teiji Tominaga
OBJECTIVE: Spinal dural arteriovenous fistula (DAVF) occurs at any spinal level but the clinical characteristics of lumbosacral DAVF have not been well documented. Purpose of this study was to evaluate clinical characteristics of lumbosacral DAVF and compare these features to those in thoracic DAVF. METHODS: Twenty-five consecutive patients with 16 thoracic and 9 lumbosacral DAVF were included (mean age, 63.9 years; twenty men). All patients presented with progressive myelopathy...
November 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29132386/primary-single-suture-anchor-re-fixation-of-anterior-cruciate-ligament-proximal-avulsion-tears-leads-to-good-functional-mid-term-results-a-preliminary-study-in-12-patients
#11
Christof Hoffmann, Jan Friederichs, Christian von Rüden, Christian Schaller, Volker Bühren, Christoph Moessmer
BACKGROUND: Current studies demonstrate encouraging short-term results after primary anterior cruciate ligament (ACL) suture anchor repair. However, earlier studies reported deterioration of knee function at 5-year follow-up following good clinical short-term recovery. Therefore, the aim of this study was to evaluate clinical long-term results after primary ACL repair at a minimum 5-year follow-up. METHODS: In a retrospective study, 13 patients were included between 2009 and 2012...
November 13, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29130878/a-novel-technique-utilizing-a-vastus-lateralis-anchor-in-treatment-of-chronic-patellar-dislocation-after-total-knee-arthroplasty
#12
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/29129614/mid-term-clinical-functional-and-radiographic-outcomes-of-105-gender-specific-patellofemoral-arthroplasties-with-or-without-the-association-of-medial-unicompartmental-knee-arthroplasty
#13
Sergio Romagnoli, Matteo Marullo
BACKGROUND: The purpose of this study is to evaluate clinical and radiographic outcomes after gender-specific patellofemoral arthroplasty (PFA) either isolated or combined with unicompartmental knee arthroplasty (UKA). METHODS: A total of 105 PFAs in 85 patients were reviewed: 64 knees had isolated patellofemoral osteoarthritis and received an isolated PFA, and 41 knees with bicompartmental osteoarthritis were treated with medial UKA and PFA. Preoperative and postoperative clinical and functional assessment included knee range of motion, Knee Society Score, University of California Los Angeles Activity Score, Tegner Activity Level Scale, and visual analogue scale pain...
October 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29128877/the-location-of-the-medial-parapatellar-arthrotomy-influences-intraoperative-patella-tracking
#14
Scott R Nodzo, Maximilian Kasparek, Kilian Rueckl, Friedrich Boettner
PURPOSE: The medial parapatellar arthrotomy (MPPA) is a commonly utilized surgical approach; however, the placement of the arthrotomy and its influence on intraoperative patellar tracking has not been evaluated. METHODS: Six knees from three fresh frozen cadavers with transthoracic amputations were operated on. All underwent standard posterior stabilized total knee arthroplasty using a medial parapatellar approach placed at the border of the vastus medialis oblique (VMO)-quadriceps junction...
November 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29128875/allowing-one-quadrant-of-patellar-lateral-translation-during-medial-patellofemoral-ligament-reconstruction-successfully-limits-maltracking-without-overconstraining-the-patella
#15
John J Elias, Kerwyn C Jones, Molly K Lalonde, Joseph N Gabra, S Cyrus Rezvanifar, Andrew J Cosgarea
PURPOSE: Graft tensioning during medial patellofemoral ligament (MPFL) reconstruction typically allows for lateral patellar translation within the trochlear groove. Computational simulation was performed to relate the allowed patellar translation to patellofemoral kinematics and contact pressures. METHODS: Multibody dynamic simulation models were developed to represent nine knees with patellar instability. Dual limb squatting was simulated representing the pre-operative condition and simulated MPFL reconstruction...
November 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29128344/validity-of-combining-history-elements-and-physical-examination-tests-to-diagnose-patellofemoral-pain
#16
Simon Décary, Pierre Frémont, Bruno Pelletier, Michel Fallaha, Belzile Sylvain, Johanne Martel-Pelletier, Pelletier Jean-Pierre, Debbie Feldman, Sylvestre Marie-Pierre, Pascal-André Vendittoli, François Desmeules
OBJECTIVE: to assess the validity of diagnostic clusters combining history elements and physical examination tests to diagnose or exclude patellofemoral pain (PFP). DESIGN: prospective diagnostic study. SETTINGS: orthopaedic outpatients clinics (n=2), family medicine clinics (n=2) and community-dwelling. PARTICIPANTS: consecutive patients (n=279) consulting one of the participating orthopaedic surgeons (n=3) or sport medicine physicians (n=2) for any knee complaint...
November 8, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29125817/do-peak-torque-angles-of-muscles-change-following-anterior-cruciate-ligament-reconstruction-using-hamstring-or-patellar-tendon-graft
#17
Hayri Baran Yosmaoğlu, Gül Baltacı, Emel Sönmezer, Hamza Özer, Deha Doğan
OBJECTIVES: This study aims to compare the effects of anterior cruciate ligament (ACL) reconstruction using autogenous hamstring or patellar tendon graft on the peak torque angle. PATIENTS AND METHODS: The study included 132 patients (103 males, 29 females; mean age 29±9 year) who were performed ACL reconstruction with autogenous hamstring or patellar tendon graft. The peak torque angles in the quadriceps and hamstring muscles were recorded using an isokinetic dynamometer...
December 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/29124287/medial-stabilized-and-posterior-stabilized-tka-affect-patellofemoral-kinematics-and-retropatellar-pressure-distribution-differently
#18
Alexander Glogaza, Christian Schröder, Matthias Woiczinski, Peter Müller, Volkmar Jansson, Arnd Steinbrück
PURPOSE: Patellofemoral kinematics and retropatellar pressure distribution change after total knee arthroplasty (TKA). It was hypothesized that different TKA designs will show altered retropatellar pressure distribution patterns and different patellofemoral kinematics according to their design characteristics. METHODS: Twelve fresh-frozen knee specimens were tested dynamically in a knee rig. Each specimen was measured native, after TKA with a posterior stabilized design (PS) and after TKA with a medial stabilized design (MS)...
November 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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
#19
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/29119193/outpatient-management-of-knee-osteoarthritis
#20
Yiyang Liow, Wilson Wang, Victor Weng Keong Loh
Osteoarthritis of the knee is a common disease that causes significant disability. Most patients can be managed conservatively in the outpatient setting. A small minority require surgery. The cornerstones of treatment are weight loss, exercise and analgesia. Walking aids, medial patellar taping, acupuncture and transcutaneous electrical nerve stimulation are useful management adjuncts. Current evidence does not support routine prescription of glucosamine and chondroitin supplements. Early consultation with an orthopaedic surgeon should be made when conservative measures fail...
October 2017: Singapore Medical Journal
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