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Patellar mobilization

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https://www.readbyqxmd.com/read/28919112/disuse-atrophy-accompanied-by-intramuscular-ectopic-adipogenesis-in-vastus-medialis-muscle-of-advanced-osteoarthritis-patients
#1
Madoka Ikemoto-Uezumi, Yasumoto Matsui, Masaki Hasegawa, Remi Fujita, Yasuhide Kanayama, Akiyoshi Uezumi, Tsuyoshi Watanabe, Atsushi Harada, A Robin Poole, Naohiro Hashimoto
Muscle dysfunction is the most important modifiable mediating factor in primary osteoarthritis because properly contracting muscles are a key absorber of forces acting on a joint. However, the pathological features of disuse muscle atrophy in osteoarthritis patients have been little studied. Vastus medialis muscles of fourteen female patients with osteoarthritis in the age range 69 to 86 years, largely immobile for one or more years, were obtained during arthroplastic surgery and analyzed histologically. These were compared to female patients without arthritis, two with patellar fracture, and two with patellar subluxation...
September 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28918784/-treatment-of-patellar-instability
#2
Martin Lind, Peter Faunø, Ole Gade Sørensen, Bjarne Mygind-Klavsen
First-time patellar luxation appears typically in teenagers and young adults below the age of 16 years, with a prevalence of 45/100,000/year. This luxation is treated with brief limited mobility in a bandage, and with a complementary physiotherapy if the mobility is influenced afterwards. Risk factors for patellar instability are patellofemoral dysplasia, hyperlaxity, patella alta and valgus malalignment in the knee joint. In case of repeated luxation the treatment is surgical, i.e. reconstruction of the medial patellofemoral ligament recreating the medial patella-stabilizing structures...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28889222/the-predictive-factors-of-secondary-patellar-resurfacing-in-computer-assisted-total-knee-arthroplasty-a-prospective-cohort-study
#3
Florent Franck, Hervé Ouanezar, Alexandre Jacquel, Vincent Pibarot, Julien Wegrzyn
PURPOSE: The decision to resurface the patella during total knee arthroplasty (TKA) remains controversial. This prospective cohort study aimed to evaluate the outcome and survivorship of the native patella in computer-assisted TKA (CAS TKA) implanted for primary knee osteoarthritis, and to determine the predictive factors of secondary patellar resurfacing (SPR). METHODS: A prospective cohort of 273 cementless ultra-congruent mobile-bearing CAS TKA implanted without patellar resurfacing was included in our total joint registry...
September 9, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28844344/patellofemoral-contact-pressures-after-patellar-distalization-a-biomechanical-study
#4
Justin S Yang, John P Fulkerson, Elifho Obopilwe, Andreas Voss, Jessica Divenere, Augustus D Mazzocca, Cory M Edgar
PURPOSE: To measure the patellofemoral contact pressure in early flexion after a tibial tubercle distalization osteotomy. METHODS: Ten matched-pair fresh-frozen cadaveric knees were studied. The average Blackburne-Peel ratio of the native knees was 0.91. The knees were placed on a testing rig, with a fixed femur and tibia mobile through 90° of flexion. Individual quadriceps heads and the iliotibial band were separated and loaded with 205 N in anatomic directions using a weighted pulley system...
August 22, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28770628/effects-of-a-knee-brace-with-a-patellar-hole-versus-without-a-patellar-hole-in-patients-with-knee-osteoarthritis-a-double-blind-randomized-controlled-trial
#5
Marco Aurélio Nemitalla Added, Caroline Added, Karina Tamy Kasawara, Viviane Perez Rotta, Diego Galace de Freitas
The objective of this study was to observe the immediate effect of a knee brace with a patellar hole versus without a patellar hole on pain perception in patients with knee osteoarthritis. To accomplish this, a double-blind, randomized controlled trial enrolled 108 patients divided into two groups (knee brace with a patellar hole or without a patellar hole). Patients were evaluated by the Visual Analogue Scale (VAS) in order to measure their pain sensation, the Timed Up and Go (TUG) test was used to evaluate their ability to walk, and the 8-m walking test (8MWT) was used to estimate their walking speed...
January 1, 2017: Evaluation & the Health Professions
https://www.readbyqxmd.com/read/28743096/osteoarthritis-with-permanent-dislocation-of-the-patella-treated-by-total-knee-arthroplasty-through-a-lateral-approach-a-report-of-two-cases
#6
Shuichi Fujiwara, Takafumi Hiranaka, Yuichi Hida, Shigeru Matsuda, Harunobu Uemoto
INTRODUCTION: Permanent dislocation of the patella (PDP) is a rare condition. In cases of PDP with tibiofemoral arthritis, total knee arthroplasty may be performed through a medial parapatellar approach with patellar realignment. In this article we present two cases of PDP with tibiofemoral osteoarthritis successfully treated via lateral approach TKA without any additional realignment procedure. We performed two total knee arthroplasties for PDP with lateral tibiofemoral arthritis through a lateral approach without any realignment procedure...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28733044/management-of-displaced-inferior-patellar-pole-fractures-with-modified-tension-band-technique-combined-with-cable-cerclage-using-cable-grip-system
#7
Xu Yang, Qinfen Wu, Chin-Hui Lai, Xin Wang
INTRODUCTION: We present a modified tension band technique combined with cable cerclage using Cable Grip System for the treatment of displaced inferior patellar pole fractures and report the knee functional outcome. PATIENTS AND METHODS: The patients who had had operative treatment of a displaced inferior patellar pole fracture (AO/OTA 34-A1) between December 2013 and December 2015 were studied retrospectively. Eleven consecutive patients had had open reduction and internal fixation with the modified technique using Cable Grip System, of whom, five males and six females with an average age of 60...
July 13, 2017: Injury
https://www.readbyqxmd.com/read/28715241/presentation-and-management-of-arthrofibrosis-of-the-knee-a-case-report
#8
Sara A Scholtes, Lynnette Khoo-Summers, Katherine J Damico
STUDY DESIGN: Case report. BACKGROUND: Arthrofibrosis is a debilitating condition that results in pain, decreased range of motion, and decreased function. Although surgical management of arthrofibrosis has been well described in the literature, rehabilitation of the arthrofibrotic knee is less well described. CASE DESCRIPTION: A 28-year-old female presented with swelling, pain, and decreased strength, range of motion, patellar mobility, and function following an exploratory arthroscopy of her left knee...
July 17, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28662692/comparison-of-fixed-and-mobile-bearing-total-knee-arthroplasty-in-terms-of-patellofemoral-pain-and-function-a-prospective-randomised-controlled-trial
#9
P Z Feczko, L M Jutten, M J van Steyn, P Deckers, P J Emans, J J Arts
BACKGROUND: Despite growing evidence in the literature, there is still a lack of consensus regarding the use of the mobile-bearing (MB) design total knee arthroplasty (TKA). METHODS: In a prospective, comparative, randomised, single centre trial, 106 patients with end-stage osteoarthritis of the knee were randomised to either an MB or fixed-bearing (FB) group to receive posterior stabilised (PS)-TKA using a standard medial parapatellar approach and patellar resurfacing with follow-up (FU) for 5 years...
June 29, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28589052/safe-and-effective-reduction-technique-for-intertrochanteric-fracture-with-ipsilateral-below-knee-amputated-limb
#10
Hironori Ochi, Tomonori Baba, Takahiro Hamanaka, Yu Ozaki, Taiji Watari, Yasuhiro Homma, Mikio Matsumoto, Kazuo Kaneko
The positioning of the patient on the fracture table is critical for the successful reduction and operative fixation of intertrochanteric hip fractures. However, this manipulation is challenging with patients who have undergone amputations of their legs. A 97-year-old man presented to the emergency department with symptom of right hip pain following a mechanical fall. He had a below-knee amputation on his right leg following a traffic accident as a 19-year-old and had a below-knee patellar tendon bearing prosthesis fitted to his lower limb for mobility...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28580253/arthroscopic-patellar-lateral-facetectomy
#11
Marcio B Ferrari, George Sanchez, Jorge Chahla, Gilbert Moatshe, Robert F LaPrade
Isolated patellofemoral osteoarthritis is relatively prevalent, with the lateral facet of the patella being the most commonly affected portion. This pathology can be a result of a patellar maltracking syndrome, patella instability, or idiopathic degenerative changes. A thorough diagnostic work-up with a physical examination and imaging studies are mandatory for a proper diagnosis and to rule out other causes of patellofemoral knee pain. These patients are often treated nonoperatively with exercises for patella mobility, intra-articular injections, braces, patellar tracking, quadriceps balance and strength, and activity modification...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28532876/treatment-of-the-scar-after-arthroscopic-surgery-on-a-knee
#12
Jacobo Alvira-Lechuz, Mercedes Roca Espiau, Elena Alvira-Lechuz
The aim of this paper is to present a treatment for scars based on percutaneous traction. This is a structural technique in which movements are performed against the barriers detected in different planes. The stages of this technique are described in detail along with the results after applying it to a postarthroscopic scar on a knee. The active and passive mobility of femoro-tibial and femoro-patellar articulations improved substantially after the treatment, as verified by signs such as pain relief, greater flexibility, disappearance of inflammation and a major recovery of tissue elasticity...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28465849/mobile-bearing-total-knee-arthroplasty-for-valgus-knee-osteoarthritis-with-permanent-patellar-dislocation-a-case-report-and-review-of-the-literature
#13
Kohei Kamada, Tomoyuki Matsumoto, Koji Takayama, Daisuke Araki, Shingo Hashimoto, Shinya Hayashi, Takehiko Matsushita, Ryosuke Kuroda
Permanent patellar dislocation with tibiofemoral joint osteoarthritis is a relatively rare condition. To treat this condition, total knee arthroplasty with proximal or distal realignment of the extensor mechanism has been reported. We report a challenging case of an 80-year-old woman diagnosed with permanent patellar dislocation with tibiofemoral joint osteoarthritis treated by a mobile bearing total knee arthroplasty utilizing navigation system. Lateral retinaculum release was performed to improve patellar tracking; other proximal or distal realignment of the extensor mechanism was not necessary...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28454908/accuracy-of-mobile-biplane-x-ray-imaging-in-measuring-6-degree-of-freedom-patellofemoral-kinematics-during-overground-gait
#14
Hans A Gray, Shanyuanye Guan, Marcus G Pandy
The aim of this study was to evaluate the accuracy with which mobile biplane X-ray imaging can be used to measure patellofemoral kinematics of the intact knee during overground gait. A unique mobile X-ray imaging system tracked and recorded biplane fluoroscopic images of two human cadaver knees during simulated overground walking at a speed of 0.7m/s. Six-degree-of-freedom patellofemoral kinematics were calculated using a bone volumetric model-based method and the results then compared against those derived from a gold-standard bead-based method...
April 19, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28293511/de-novo-reconstruction-of-a-hybrid-patella-by-staged-fabrication-of-a-microvascular-bone-transplant-with-an-osteointegrated-prosthetic-socket
#15
Goetz A Giessler, Christian Hendrich
Total patellectomy is sometimes unavoidable but usually results in severely impaired function, pain, and instability in the affected knee. Any patellar prosthetic solutions rely on a certain amount of remaining bone and therefore are not applicable after total patellectomy. Traditionally, reconstruction of a neopatella by avascular or allogeneic bone grafts is hampered by mechanical failure, resorption, or infection. We developed a new, 3-stage approach to reconstruct a hybrid patella composed of a revascularized scapula tip transplant fabricated with a prosthetic socket...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28164055/proximal-tibial-epiphysis-injury-flexion-type-salter-harris-type-1
#16
Pratik Israni, Mangesh Panat
INTRODUCTION: Fractures of the proximal tibial epiphysis rare. It has been estimated that fractures of the upper tibial epiphysis account for 0.5-3.1% of all epiphyseal injuries. Who had no neurovascular deficit, with fixed extension deformity at the left knee was treated early with closed reduction techniques. CASE REPORT: We present a case of a 16-year-old boy who while playing cricket on the road was hit by a car. The patient presented in emergency room with extremely swollen knee and soft tissue swelling (hemarthrosis), he was unable to lift his leg actively due to severe pain because of hamstrings spasm, and he had no wound over his left knee and had no other associated injuries...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28149738/frontal-tendon-lengthening-plasty-for-treatment-of-structural-patella-baja
#17
Valentino F Bruhin, Stefan Preiss, Gian M Salzmann, Laurent P Harder
Patella baja is a severe complication seen after trauma, prolonged immobilization and surgery. Several surgical methods have been described to proximalize the patella without a change in the patella tendon length. Yet, patella tendon shortening and thickening can be regarded as the hallmark pathology. As such, we describe a technique for the lengthening of the patellar tendon to pathoconformly address underlying patella baja. The technique is reproducible and gives the possibility of an early postoperative mobilization to prevent re-baja-a typical complication after patella baja surgery...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27957592/-lateral-unicompartmental-knee-arthroplasty-a-challenge
#18
T Walker, P R Aldinger, M R Streit, T Gotterbarm
OBJECTIVE: Joint surface replacement in the lateral compartment by unicondylar knee arthroplasty. INDICATIONS: Lateral unicompartmental osteoarthritis of the knee joint, avascular necrosis of the lateral femoral condyle. CONTRAINDICATIONS: Full thickness cartilage defect in the central part of the medial compartment or in the medial aspect of the patellofemoral joint. Instability/contracture of cruciate and collateral ligaments, valgus deformity >15°, valgus deformity not passively correctable, flexion deformity >15°, an intraoperative flexion <100°, failed upper tibial osteotomy, rheumatoid arthritis...
February 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/27855678/augmentation-and-repair-of-tendons-using-demineralised-cortical-bone
#19
Sherif Elnikety, Catherine J Pendegrass, Roberta Ferro de Godoy, Charles Holden, Gordon W Blunn
BACKGROUND: In severe injuries with loss of tendon substance a tendon graft or a synthetic substitute is usually used to restore functional length. This is usually associated with donor site morbidity, host tissue reactions and lack of remodelling of the synthetic substitutes, which may result in suboptimal outcome. A biocompatible graft with mechanical and structural properties that replicate those of normal tendon and ligament has so far not been identified. The use of demineralised bone for tendon reattachment onto bone has been shown to be effective in promoting the regeneration of a normal enthesis...
November 17, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27709223/tibial-plateau-levelling-osteotomy-in-eleven-cats-with-cranial-cruciate-ligament-rupture
#20
Julia K Mindner, Malgorzata J Bielecki, Stefan Scharvogel, Diane Meiler
OBJECTIVE: To report the surgical procedure, intra- and postoperative complications, and short-term follow-up of tibial plateau levelling osteotomy (TPLO) in feline patients with cranial cruciate ligament (CrCL) rupture using a 2.0 or 2.4 mm Synthes(®) TPLO plate. STUDY DESIGN: Prospective study. MATERIAL AND METHODS: Eleven cats with a CrCL rupture were included in the study. Inspection of intra-articular structures was carried out via arthroscopy or arthrotomy...
November 23, 2016: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
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