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https://www.readbyqxmd.com/read/28809636/-arthroscopic-finding-of-knee-joint-in-relation-to-age-and-its-comparison-with-pre-operative-clinical-finding-a-retrospective-study
#1
P Látal, K Šimeček, M Kloub
PURPOSE OF THE STUDY In the retrospective study of two South Bohemian centres we present the comparison of pre-operative anamnestic clinical signs in relation to the arthroscopic intraoperative finding. The obtained data is used also to evaluate the arthroscopic finding in relation to age and sex. MATERIAL AND METHODS The arthroscopic findings of patients who underwent surgery in 2013-2014 period (1.1.2013-31.12.2014) at the Department of Trauma Surgery of České Budějovice Hospital, a.s. and in 2014 (1.1...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28801826/brain-activity-changes-in-somatosensory-and-emotion-related-areas-with-medial-patellofemoral-ligament-deficiency
#2
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...
August 11, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28795075/the-effect-of-menstrual-cycle-and-contraceptives-on-acl-injuries-and-laxity-a-systematic-review-and-meta-analysis
#3
REVIEW
Simone D Herzberg, Makalapua L Motu'apuaka, William Lambert, Rongwei Fu, Jacqueline Brady, Jeanne-Marie Guise
BACKGROUND: Women are at substantially greater risk for anterior cruciate ligament (ACL) injuries than are men. PURPOSE: To conduct a systematic review and meta-analysis of the literature to clarify the effect of the menstrual cycle and contraceptives on the laxity of and noncontact injuries to the ACL. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: Searches were conducted using MEDLINE (1946-August 2016), the Cochrane Library Database, clinical trial registries, and related reference lists...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28782698/anatomical-knee-postero-lateral-corner-reconstruction-the-versailles-technique
#4
J Murgier, P Boisrenoult, C Steltzlen, P Beaufils, N Pujol
Postero-lateral knee instability raises surgical challenges. Of the many available reconstruction techniques, few ensure anatomical reconstruction of the postero-lateral corner (PLC). The "Versailles" technique ensures the anatomical reconstruction of the three main PLC stabilisers (lateral collateral ligament, popliteus tendon, and popliteo-fibular ligament)by using either a hamstring autograft or a tendon allograft.
August 3, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28776631/diffuse-pigmented-villonodular-synovitis-as-a-rare-cause-of-graft-failure-following-anterior-cruciate-ligament-reconstruction
#5
Rajiv Rajani, Liliana Ogden, Christopher J Matthews, C Parker Gibbs
This case report describes a 42-year-old woman who was diagnosed with pigmented villonodular synovitis (PVNS) in the knee. The patient had received a bone-patella tendon-bone autograft reconstruction of her anterior cruciate ligament (ACL) 22 years prior to her diagnosis of PVNS. After a traumatic event that tore her ACL graft, she underwent a second surgery to repair the initial reconstruction. However, her pain and joint instability remained unresolved. When radiolucent lesions in her tibia and femur were identified through a radiographic image, the patient was referred to the authors' orthopedic oncology clinic...
August 3, 2017: Orthopedics
https://www.readbyqxmd.com/read/28776628/bilateral-atraumatic-proximal-tibiofibular-joint-instability-treated-with-suspensory-button-fixation
#6
Olivia C O'Reilly, Katherine H Carruthers, Patrick N Siparsky
Proximal tibiofibular joint (PTFJ) instability is a rare cause of lateral-sided knee pain. The authors present a case of bilateral, symptomatic PTFJ instability with peroneal nerve dysfunction in an active 16-year-old female athlete. This was addressed with peroneal nerve decompression and PTFJ stabilization using a suspensory button fixation system. This provides an alternative treatment from historical methods such as PTFJ fusion or re-approximation of the joint with tendon through bone tunnels. The surgical technique, as well as potential treatment challenges, is described in detail...
August 3, 2017: Orthopedics
https://www.readbyqxmd.com/read/28768338/combined-effects-of-fatigue-and-surface-instability-on-jump-biomechanics-in-elite-athletes
#7
Olaf Prieske, Marie Demps, Melanie Lesinski, Urs Granacher
The present study aimed to examine the effects of fatigue and surface instability on kinetic and kinematic jump performance measures. Ten female and 10 male elite volleyball players (18±2 years) performed repetitive vertical double-leg box jumps until failure. Pre and post fatigue, jump height/performance index, ground reaction force and knee flexion/valgus angles were assessed during drop and countermovement jumps on stable and unstable surfaces. Fatigue, surface condition, and sex resulted in significantly lower drop jump performance and ground reaction force (p≤0...
August 2, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28760559/how-to-measure-responses-of-the-knee-to-lateral-perturbations-during-gait-a-proof-of-principle-for-quantification-of-knee-instability
#8
Josien C van den Noort, Lizeth H Sloot, Sjoerd M Bruijn, Jaap Harlaar
Knee instability is a major problem in patients with anterior cruciate ligament injury or knee osteoarthritis. A valid and clinically meaningful measure for functional knee instability is lacking. The concept of the gait sensitivity norm, the normalized perturbation response of a walking system to external perturbations, could be a sensible way to quantify knee instability. The aim of this study is to explore the feasibility of this concept for measurement of knee responses, using controlled external perturbations during walking in healthy subjects...
July 18, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28751170/rehabilitation-of-distal-radioulnar-joint-instability
#9
G Mesplié, V Grelet, O Léger, S Lemoine, D Ricarrère, C Geoffroy
Distal radioulnar joint (DRUJ) instabilities are common and often combined with other injuries of the interosseous membrane and/or the proximal radioulnar joint. Once they are diagnosed and the treatment is chosen, physiotherapists have limited choices due to the lack of validated protocols. The benefits of proprioception and neuromuscular rehabilitation have been brought to light for the shoulder, knee and ankle joints, among others. However, no program has been described for the DRUJ. The purpose of this article is to study the muscular elements responsible for active DRUJ stability, and to propose a proprioceptive rehabilitation program suited to this condition...
July 24, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28746219/clinical-outcomes-of-medial-collateral-ligament-injury-in-total-knee-arthroplasty
#10
Xiaomeng Wang, Huixin Liu, Pengkai Cao, Chang Liu, Zhenyue Dong, Jianchao Qi, Fei Wang
Intraoperative injury to the medial collateral ligament (MCL) during total knee arthroplasty (TKA) is a rare but severe complication. The main treatment methods are primary repair and revision with a more constrained implant; however, the clinical outcomes of primary reconstruction without a constrained implant have rarely been reported.A retrospective study was performed to evaluate the prevalence of iatrogenic injury to the MCL during primary TKA, and to report the clinical outcomes of MCL reconstruction without the use of a constrained device...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721459/measurement-of-lower-limb-alignment-there-are-within-person-differences-between-weight-bearing-and-non-weight-bearing-measurement-modalities
#11
Daphne A L Schoenmakers, Peter Z Feczko, Bert Boonen, Martijn G M Schotanus, Nanne P Kort, Pieter J Emans
PURPOSE: Previous studies have compared weight-bearing mechanical leg axis (MLA) measurements to non-weight-bearing measurement modalities. Most of these studies compared mean or median values and did not analyse within-person differences between measurements. This study evaluates the within-person agreement of MLA measurements between weight-bearing full-length radiographs (FLR) and non-weight-bearing measurement modalities (computer-assisted surgery (CAS) navigation or MRI). MATERIALS AND METHODS: Two independent observers measured the MLA on pre- and postoperative weight-bearing FLR in 168 patients...
July 18, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28707114/the-shoulder-instability-return-to-sport-after-injury-sirsi-a-valid-and-reproducible-scale-to-quantify-psychological-readiness-to-return-to-sport-after-traumatic-shoulder-instability
#12
Antoine Gerometta, Shahnaz Klouche, Serge Herman, Nicolas Lefevre, Yoann Bohu
PURPOSE: The main goal of this study was to propose and validate a tool to quantify the psychological readiness of athletes to return to sport following traumatic shoulder instability and conservative or surgical management. METHODS: «Knee» was replaced by the term «shoulder» in the Anterior Cruciate Ligament-Return to Sport after Injury scale. This pilot test of the Shoulder Instability-Return to Sport after Injury scale (SIRSI) was performed in a group of athletes who underwent surgery for post-traumatic chronic anterior shoulder instability...
July 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28706801/combined-anatomic-reconstruction-of-the-anterior-cruciate-and-anterolateral-ligaments-using-hamstring-graft-through-a-single-femoral-tunnel-and-with-a-single-femoral-fixation
#13
Assem Mohamed Noureldin Zein, Mohamed Ali, Hesham Ali, Ahmed Nady Saleh Elsaid, Alaa Zenhom Mahmoud, Mohamed K Osman, Amr Mohamed Mohamed Soliman
Patients with complete anterior cruciate ligament (ACL) injury have different degrees of rotational (internal rotation) laxity. A residual pivot shift has been found to be positive in more than 15% of cases after an accurate ACL reconstruction. Improved understanding of the existence, function, and biomechanical role of the anterolateral ligament (ALL) in controlling rotational instability of the knee has redirected and refocused attention on a supplemental extra-articular reconstruction of the ALL in conjunction with the intra-articular ACL reconstruction so as to restore normal kinematics of the knee...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28704747/two-cases-of-late-medial-instability-of-the-knee-due-to-hip-disease-after-total-knee-arthroplasty
#14
Masanori Tsubosaka, Tomoyuki Matsumoto, Koji Takayama, Naoki Nakano, Ryosuke Kuroda
INTRODUCTION: There are few specific reports of late medial instability after total knee arthroplasty (TKA). We described two cases of late medial instability of the knee due to hip disease with osteoarthritis or rheumatoid arthritis after TKA, which required revision TKA. PRESENTATION OF CASES: An 82-year-old woman experienced right femoral neck fracture due to a fall that required conservative treatment at age 77 years and underwent left TKA at age 80 years. A 68-year-old woman underwent left TKA at age 54 years, right TKA at age 64 years, and left THA at age 67 years...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28702749/evaluation-of-different-surgical-methods-in-treating-recurrent-patella-dislocation-after-three-dimensional-reconstruction
#15
Hao Du, Xiao-Xiao Tian, Fa-Qi Guo, Xiang-Ming Li, Tao-Tao Ji, Bin Li, Tong-Sen Li
PURPOSE: Recurrent patella dislocation (RPD) is the most common complication of patellar instability. The effects of different surgical techniques on the outcome of RPD treatments remain unclear. This study was conducted to compare the effects of three surgical techniques in treating RPD by three-dimensional (3D) reconstruction from computed tomography (CT) scans. METHODS: Sixty-eight patients with RPD and no previous surgical treatments who attended our hospital between October 2010 and 2013 were enrolled and randomly assigned into three groups: (1) medial patellofemoral ligament (MPFL) reconstruction and medial patellar retinaculum (MPR) plication group; (2) lateral patellar retinaculum (LPR) release and MPR plication group; and (3) MPFL reconstruction and LPR release group...
July 12, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28701010/how-do-axial-scan-orientation-deviations-affect-the-measurements-of-knee-anatomical-parameters-associated-with-patellofemoral-instability-a-simulated-computed-tomography-study
#16
Ran Xiong, Cheng Chen, Li Yin, Xiaoyuan Gong, Jiangming Luo, Fuyou Wang, Liu Yang, Lin Guo
No abstract text is available yet for this article.
July 12, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28696495/robotic-arm-assisted-total-knee-arthroplasty-demonstrated-soft-tissue-protection
#17
Anton Khlopas, Morad Chughtai, Emily L Hampp, Laura Y Scholl, Michael Prieto, Ta-Cheng Chang, Abdullah Abbasi, Manoshi Bhowmik-Stoker, Jason Otto, David J Jacofsky, Michael A Mont
INTRODUCTION: While total knee arthroplasty (TKA) procedures have demonstrated clinical success, occasionally intraoperative complications can occur. Collateral or posterior cruciate ligament injury, instability, extensor mechanism disruption, and tibiofemoral or patellofemoral dislocation are among a few of the intraoperatively driven adverse events prevalently ranked by The Knee Society. Robotic-arm assisted TKA (RATKA) provides a surgeon the ability to three-dimensionally plan a TKA and use intraoperative visual, auditory, and tactile feedback to ensure that only the desired bone cuts are made...
July 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28693590/patella-morphological-alteration-after-patella-instability-in-growing-rabbits
#18
Jinghui Niu, Qi Qi, Yingzhen Niu, Conglei Dong, Zhenyue Dong, Peng Cui, Fei Wang
BACKGROUND: The shape of the patella has been considered to be a predisposing factor resulting in patellar instability, but the effects of abnormal patella position during its development are unclear. The present study evaluated patellar morphological changes after patella instability and evaluated the influence of patellar instability on the patella shape. METHODS: Twenty rabbits that were 2 months old were included in the study. The left knee of each rabbit, defined as the experimental group (N = 20 knees/group), underwent a medial soft tissue restraint release...
July 11, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28678520/return-to-play-guidelines-after-medial-patellofemoral-ligament-surgery-for-recurrent-patellar-instability-a-systematic-review
#19
Saif Zaman, Alex White, Weilong J Shi, Kevin B Freedman, Christopher C Dodson
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction and repair continue to gain acceptance as viable treatment options for recurrent patellar instability in patients who wish to return to sports after surgery. Return-to-play guidelines with objective or subjective criteria for athletes after MPFL surgery, however, have not been uniformly defined. PURPOSE: To determine whether a concise and objective protocol exists that may help athletes return to their sport more safely after MPFL surgery...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28678124/an-in-vivo-simulation-of-isometry-of-the-anterolateral-aspect-of-the-healthy-knee
#20
Willem A Kernkamp, Samuel K Van de Velde, Tsung-Yuan Tsai, Ewoud R A van Arkel, Peter D Asnis, Rob G H H Nelissen, Robert F LaPrade, Bertram Zarins, Guoan Li
BACKGROUND: To assess the isometry of theoretical lateral extra-articular reconstruction (LER), we evaluated theoretical grafts attached to various points on the lateral femoral condylar area and to either Gerdy's tubercle or the anatomic attachment site of the anterolateral ligament to the tibia. METHODS: In 18 subjects, healthy knees with no history of either injury or surgery involving the lower extremity were studied. The subjects performed a sit-to-stand motion (from approximately 90° of flexion to full extension), and each knee was studied using magnetic resonance and dual fluoroscopic imaging techniques...
July 5, 2017: Journal of Bone and Joint Surgery. American Volume
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