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https://www.readbyqxmd.com/read/28075434/diagnosis-and-surgical-correction-of-congenital-bilateral-patellar-luxation-in-two-dwarf-zebu-calves
#1
Göknil Kalayci, Cagri Binici, Julia Tünsmeyer, Silke Stein, Ahmad Al Aiyan, Kerstin Müller, Leo Brunnberg
This case study presents two female dwarf zebu calves with permanent bilateral flexion of the stifle joint secondary to bilateral congenital lateral patellar luxation. The patella could be manually repositioned bilaterally in the first calf (14 days old), but re-luxated immediately with release of manual pressure (luxation grade III). In the second calf (28 days old) both patellae were permanently luxated laterally (grade IV). The right and left stifles of each calf were operated in a staged procedure with approximately 14 days between surgery of the two sides...
January 11, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28068982/effect-of-proximal-translation-of-the-osteotomized-tibial-tuberosity-during-tibial-tuberosity-advancement-on-patellar-position-and-patellar-ligament-angle
#2
Jack D Neville-Towle, Mariano Makara, Kenneth A Johnson, Katja Voss
BACKGROUND: Cranial cruciate ligament insufficiency is a common orthopaedic problem in canine patients. This cadaveric and radiographic study was performed with the aim of determining the effect of proximal translation of the tibial tuberosity during tibial tuberosity advancement (TTA) on patellar position (PP) and patellar ligament angle (PLA). RESULTS: Disarticulated left hind limb specimens harvested from medium to large breed canine cadavers (n = 6) were used for this study...
January 9, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28059119/dysregulation-of-wti-kts-is-associated-with-the-kidney-specific-effects-of-the-lmx1b-r246q-mutation
#3
Gentzon Hall, Brandon Lane, Megan Chryst-Ladd, Guanghong Wu, Jen-Jar Lin, XueJun Qin, Elizabeth R Hauser, Rasheed Gbadegesin
Mutations in the LIM homeobox transcription factor 1-beta (LMX1B) are a cause of nail patellar syndrome, a condition characterized by skeletal changes, glaucoma and focal segmental glomerulosclerosis. Recently, a missense mutation (R246Q) in LMX1B was reported as a cause of glomerular pathologies without extra-renal manifestations, otherwise known as nail patella-like renal disease (NPLRD). We have identified two additional NPLRD families with the R246Q mutation, though the mechanisms by which LMX1BR246Q causes a renal-specific phenotype is unknown...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28050540/keblish-s-lateral-surgical-approach-enhances-patellar-tilt-in-valgus-knee-arthroplasty
#4
José Roberto Tonelli Filho, Marcus Ceregatti Passarelli, João Alberto Salles Brito, Gustavo Constantino Campos, Alessandro Rozim Zorzi, João Batista de Miranda
OBJECTIVE: To compare the clinical and radiological outcomes of conventional medial and lateral approaches for total knee replacement in the valgus osteoarthritic knee. METHODS: In this randomized controlled trial, 21 patients with valgus knee osteoarthritis were randomized to total knee replacement through medial or lateral approach. The primary outcome was radiographic patellar tilt. Secondary outcomes were visual analog scale of pain, postoperative levels of hemoglobin, and clinical aspect of the operative wound...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28050533/total-ruptures-of-the-extensor-apparatus-of-the-knee
#5
Diogo Moura, Fernando Fonseca
OBJECTIVE: This was a retrospective case-control study on total ruptures of the extensor apparatus of the knee, aimed to compare patella fractures with tendinous ruptures. METHODS: The sample included 190 patients and 198 total ruptures of the knee extensor apparatus. All patients were evaluated by the same examiner after a minimum one-year follow-up. RESULTS: Tendinous ruptures occurred most frequently in men, in younger patients, and had better clinical and functional outcomes when compared with patella fractures; however, the former presented higher levels of thigh atrophy...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28049517/osteochondritis-dissecans-located-on-the-medial-tibial-plateau-a-case-report
#6
Yimin Zhang, Xiaoguang Liu
BACKGROUND: Osteochondritis dissecans are typically located mainly on the femoral condyle, with reported but less common cases of patella involvement. In this case report, we reported a rare case of osteochondritis dissecans located on the medial tibial plateau. CASE PRESENTATION: A 26-year-old Han Chinese woman presented with a lesion on her left medial tibial plateau. She was treated by arthroscopy for her knee condition. During the operation, a primary diagnosis of osteochondritis dissecans on her medial tibial plateau was indicated by an osteochondral fragment...
January 4, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28045874/surgical-treatment-for-failure-of-repair-of-patellar-and-quadriceps-tendon-rupture-with-ipsilateral-hamstring-tendon-graft
#7
Nicola Maffulli, Rocco Papalia, Guglielmo Torre, Vincenzo Denaro
Tears of the patellar and quadriceps tendon are common in the active population, especially in athletes. At present, several techniques for surgical repair and reconstruction are available. When reruptures occur, a reconstruction is mandatory. In the present paper, we describe a surgical technique for patellar and quadriceps tendon reconstruction using ipsilateral hamstring autograft. After routine hamstring tendon harvesting, the tendon ends are prepared using a whip stitch. A transverse tunnel is drilled in the midportion of the patella, the hamstring graft is passed through the patella, and firmly secured to the patellar tunnel openings with sutures...
March 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/28045869/why-do-patellofemoral-stabilization-procedures-fail-keys-to-success
#8
Nick Caplan, Islam Nassar, Bobby Anand, Deiary F Kader
In recent years, surgical interventions for patellofemoral joint instability have gained popularity, possibly revitalized by the recent advances in our understanding of patellofemoral joint instability and the introduction of a number of new surgical procedures. This rise in surgical intervention has brought about various complications. In this review article, we present the complications that are associated with 5 main surgical procedures to stabilize the patella-medial patellofemoral ligament reconstruction, tibial tubercle osteotomy, trochleoplasty, lateral release/lateral retinacular lengthening, and derotation osteotomies...
March 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/28043753/medial-open-wedge-high-tibial-osteotomy-may-adversely-affect-the-patellofemoral-joint
#9
Kang-Il Kim, Dong-Kyoon Kim, Sang-Jun Song, Sang-Hak Lee, Dae-Kyung Bae
PURPOSE: To evaluate 2-stage arthroscopic findings of the patellofemoral joint before and after medial open-wedge high tibial osteotomy (HTO) and verify whether the patellofemoral joint would be influenced by medial open-wedge HTO. METHODS: We prospectively reviewed 114 cases of medial open-wedge HTO for the treatment of osteoarthritis with a varus knee. First-look arthroscopy was performed during HTO. The mean age at the time of HTO was 56.34 ± 5.4 years (range, 40-69 years)...
December 30, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28040880/autologous-osteochondral-transplantation-mosaicplasty-in-articular-cartilage-defects-of-the-patellofemoral-joint-retrospective-analysis-of-33-cases
#10
T Y Emre, Z Atbasi, D T Demircioglu, M Uzun, O Kose
OBJECTIVE: The purpose of this retrospective study was to evaluate the results of osteochondral autografting (mosaicplasty) in isolated articular cartilage defects of the patellofemoral joint. MATERIALS AND METHODS: Thirty-three patients who underwent mosaicplasty for patellofemoral (either patella or trochlea) cartilage defects (modified Outerbridge classification: grades III and IV) of the knee joint were retrospectively reviewed. There were 25 male and 8 female patients with a mean age of 31...
December 31, 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28032709/relationship-between-patellar-tracking-and-the-screw-home-mechanism-of-tibiofemoral-joint
#11
Li-Kang Zhang, Xiao-Meng Wang, Ying-Zhen Niu, Hui-Xin Liu, Fei Wang
OBJECTIVE: To demonstrate the effect of the screw-home motion on the stability of the patellofemoral joint, and investigate its mechanism of regulation of patellar tracking. METHODS: Twenty volunteers who met the criteria were examined. All subjects had axial computed tomography (CT) scanning performed on bilateral knees at 0° and 30° of flexion. Scanning began above the femorotibial articulation and femoral trochlear groove, and moved sequentially down to the level of the anterior tibial tubercle...
November 2016: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28031494/outcome-in-total-knee-arthroplasty-with-a-medial-lateral-balanced-versus-unbalanced-gap
#12
Ahmed Jawhar, Karolin Hutter, Hanns-Peter Scharf
PURPOSE: To evaluate the clinical outcome in 108 total knee arthroplasty (TKA) patients with a medial-lateral balanced versus unbalanced gap after a mean follow-up of 34 months. METHODS: 64 women and 44 men (mean age, 69.5 years) underwent computer-assisted TKA for osteoarthritis using a cemented fixed-bearing cruciate-retaining prosthesis. The medial-lateral gap difference (measured with the prosthesis in situ and the patella reduced) was balanced (≤2 mm) in 81 patients and unbalanced (>2 mm) in 27 patients...
December 2016: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28029800/patellofemoral-kinematics-and-tibial-tuberosity-trochlear-groove-distances-in-female-adolescents-with-patellofemoral-pain
#13
Victor R Carlson, Barry P Boden, Frances T Sheehan
BACKGROUND: Patellofemoral pain (PFP) is a prevalent disorder among female adolescents. Overuse is frequently cited as the cause of pain for this population. What is currently unclear, however, is if the patella demonstrates abnormal tracking patterns relative to the femoral trochlear groove in female adolescents with PFP. PURPOSE: The aim of this case-control study was to determine if abnormal patellar tracking patterns are present in female adolescents with PFP...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28029579/patellar-inversion-180-degree-rotation-of-the-patella-around-its-vertical-axis-within-the-intercondylar-notch
#14
Samarth Mittal, Arkesh M, Vivek Shankar, Swapnil Singh, Pankaj Sharma, Ravi Mittal
BACKGROUND: Dislocation of the patella can occur around its vertical as well as horizontal axis. However, near 180 degree rotation of the patella around its vertical axis within the intercondylar notch without its complete dislocation has never been previously reported to the best of our knowledge. We report one such neglected case along with its management. METHODS: The patient underwent open reduction and de-rotation of patella with repair of the medial and lateral patellar retinacula...
October 28, 2016: Knee
https://www.readbyqxmd.com/read/28028569/functional-testing-and-return-to-sport-following-stabilization-surgery-for-recurrent-lateral-patellar-instability-in-competitive-athletes
#15
Aaron J Krych, Michael P O'Malley, Nick R Johnson, Rohith Mohan, Timothy E Hewett, Michael J Stuart, Diane L Dahm
PURPOSE: Medial patellofemoral ligament (MPFL) reconstruction and tibial tubercle osteotomy are commonly used to treat recurrent lateral patellar instability, yet there are limited available data on return to sport (RTS) following these procedures. The purpose of this study is to evaluate patient factors associated with excellent functional outcomes, including successful RTS, following surgical stabilization including MPFL reconstruction in competitive athletes with recurrent lateral patellar instability...
December 27, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28018089/intra-articular-dislocation-of-patella-reduced-by-closed-method-a-rare-case-report
#16
Saurabh Pagdal, Onkar Lande, Umesh Jadhav
Intra-articular dislocation of the patella is a rare injury. Two types of intra-articular dislocations have been described in literature. In horizontal type, the patella has rotated on its horizontal axis. In the second type, the patella rotates on its vertical axis. These dislocations frequently are difficult to reduce by closed methods, and open reduction generally is required. We describe here a case of horizontal intra-articular dislocation of patella in a young 25-year-old male managed successfully by closed reduction...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28008570/the-role-of-interventional-radiology-in-the-treatment-of-intrahepatic-cholangiocarcinoma
#17
Anna Maria Ierardi, Salvatore Alessio Angileri, Francesca Patella, Silvia Panella, Natalie Lucchina, Elena N Petre, Antonio Pinto, Giuseppe Franceschelli, Gianpaolo Carrafiello, Gianpaolo Cornalba, Constantinos T Sofocleous
Intrahepatic cholangiocarcinoma (ICC) is the second most common primary hepatic malignancy after hepatocellular carcinoma. Complete surgical resection remains the only potentially curative option for patients with ICC. However, until now, early diagnosis with potential surgical intervention has been the exception rather than the rule with only 30% of patients qualifying for attempted surgical cure. Many patients are unresectable because of disease stage, anatomic conditions, medical comorbidities, and small future remnant liver...
January 2017: Medical Oncology
https://www.readbyqxmd.com/read/28007872/operating-room-scheduling-is-not-associated-with-early-outcome-following-elective-anatomic-lung-resections-a-propensity-score-case-matched-analysis%C3%A2
#18
Miriam Patella, Kostas Papagiannopoulos, Richard Milton, Nilanjan Chaudhuri, Emmanuel Kefaloyannis, Alessandro Brunelli
OBJECTIVES: To investigate the effect of operating room scheduling on the outcome of patients undergoing elective lung resection. METHODS: In total, 420 patients submitted to anatomical pulmonary resections (363 lobectomies, 35 pneumonectomies, 22 segmentectomies) (April 2014-November 2015) were analysed. Ninety-two patients (22%) were operated on during weekends (Friday or Saturday) and 161 patients (38%) in the afternoon. Propensity score matching was performed to account for possible selection bias between the groups...
December 22, 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28006992/increasing-hip-and-knee-flexion-during-a-drop-jump-task-reduces-tibiofemoral-shear-and-compressive-forces-implications-for-acl-injury-prevention-training
#19
Liang-Ching Tsai, Yi-An Ko, Kyle E Hammond, John W Xerogeanes, Gordon L Warren, Christopher M Powers
Although most ACL injury prevention programmes encourage greater hip and knee flexion during landing, it remains unknown how this technique influences tibiofemoral joint forces. We examined whether a landing strategy utilising greater hip and knee flexion decreases tibiofemoral anterior shear and compression. Twelve healthy women (25.9 ± 3.5 years) performed a drop-jump task before and after a training session (10-15 min) that emphasised greater hip and knee flexion. Peak tibiofemoral anterior shear and compressive forces were calculated using an electromyography (EMG)-driven knee model that incorporated joint kinematics, EMG and participant-specific muscle volumes and patella tendon orientation measured using magnetic resonance imaging (MRI)...
December 23, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28002228/defining-the-location-of-the-adductor-canal-using-ultrasound
#20
Wan Yi Wong, Siska Bjørn, Jennie Maria Christin Strid, Jens Børglum, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: The precise location of the adductor canal remains controversial among anesthesiologists. In numerous studies of the analgesic effect of the so-called adductor canal block for total knee arthroplasty, the needle insertion point has been the midpoint of the thigh, determined as the midpoint between the anterior superior iliac spine and base of patella. "Adductor canal block" may be a misnomer for an approach that is actually an injection into the femoral triangle, a "femoral triangle block...
December 19, 2016: Regional Anesthesia and Pain Medicine
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