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https://www.readbyqxmd.com/read/28425054/can-a-three-component-prosthesis-be-used-for-conversion-of-painful-ankle-arthrodesis-to-total-ankle-replacement
#1
Markus Preis, Travis Bailey, Lucas S Marchand, Alexej Barg
BACKGROUND: In patients with painful ankle arthrodesis, the surgical treatment is challenging, and may include takedown of ankle arthrodesis and conversion to a total ankle replacement (TAR). This procedure is technically demanding given the altered anatomy after arthrodesis. Few studies have evaluated TAR in the setting of prior arthrodesis. QUESTIONS/PURPOSES: (1) What intraoperative and perioperative complications were observed in patients who underwent conversion of an ankle arthrodesis to a TAR? (2) Was durable fixation achieved at short term, and what was the alignment of the components? (3) What subsequent surgical procedures were performed, including revisions? (4) What improvements were observed in pain, tibiotalar range of motion (ROM), and quality of life? METHODS: Between January 2007 and December 2014, 18 patients with a painful ankle arthrodesis underwent conversion to TAR at our tertiary referral center...
April 19, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28416839/-a-correlation-analysis-of-the-ankle-ct-and-ankle-fracture-classification
#2
X F Gong, Y W Lyu, J H Wang, Y Wang, Y Wu, M Y Wang
OBJECTIVE: To summarize the CT features of ankle fracture and to analyze the relationship between the CT images and the most commonly used ankle fracture classification. METHODS: With 369 cases of adult ankle fractures analyzed retrospectively, the CT images 1 cm above the ankle joint and its characteristics, the Danis-Weber classification of ankle fracture were studied, and so was the relationship between CT images and the fracture classification. RESULTS: There were 8 forms of CT images...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28410782/posterior-arthroscopic-tibiotalar-arthrodesis-anatomic-feasibility-study
#3
Louis Malekpour, Said Rahali, Damien Potage, Fabrice Duparc, Franck Dujardin, Xavier Roussignol
Anterior arthroscopic tibiotalar arthrodesis has been well codified. A posterior approach with the patient in prone position is indicated when the anterior approach is precluded by soft tissue issues or for a 1-step procedure associated with posterior subtalar fusion. In an anatomic study, we assessed the feasibility of posterior arthroscopic tibiotalar fusion and sought to determine the arthroscopy entry points, mortise cartilage freshening quality, and risk of osseous, tendinous, vascular, and neural complications...
April 11, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28373933/arthroscopic-curettage-and-bone-grafting-of-bone-cysts-of-the-talar-body
#4
Tun Hing Lui
Talar bone cysts can develop as a result of osteochondral lesions of the talus. This can be a source of deep ankle pain. Open debridement and bone grafting of the bone cysts requires extensive soft tissue dissection and malleolar osteotomy. Removal of normal cartilage of the talus is frequently required to approach the bone cysts. Alternatively, the cysts can be grafted arthroscopically with minimal disruption of the normal cartilage surface. The key to success is careful preoperative planning with a computed tomogram of the ankle...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28371502/comparison-of-posteromedial-versus-posterolateral-approach-for-posterior-malleolus-fixation-in-trimalleolar-ankle-fractures
#5
Sheng Zhong, Lin Shen, Jia-Guo Zhao, Jie Chen, Jin-Feng Xie, Qi Shi, Ying-Hua Wu, Xian-Tie Zeng
OBJECTIVE: To compare clinical and radiographic outcomes of posterior malleolar fractures (PMF) treated with lag screws from anterior to posterior versus posterior to anterior approach. METHODS: We retrospectively analyzed 48 patients with trimalleolar fractures who underwent open reduction and internal fixation (ORIF) with either posteromedial (PM) or posterolateral (PL) approaches between January 2012 and December 2014. Fixation of the posterior malleolus was made with anteroposterior screws in 20 patients using the PM approach and posteroanterior screws in 28 patients using the PL approach...
February 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28366469/comparison-between-carbon-peek-plate-and-conventional-stainless-steal-plate-in-ankle-fractures-a-prospective-study-of-two-years-follow-up
#6
Matteo Guzzini, Riccardo Maria Lanzetti, Domenico Lupariello, Federico Morelli, Giorgio Princi, Dario Perugia, Andrea Ferretti
INTRODUCTION: The aim of our study is to compare the clinical and radiological outcomes of the treatment of distal fibular fracture with the traditional stainless steel or the new radiolucent CFR-PEEK plates. The hypothesis is that there are no differences in clinical and radiological outcomes at the final follow-up between the two fixation devices. METHODS: All consecutive patients aged from 18 or over, who had undergone operative treatment for malleolar fracture between 2013 and 2014, have been included in the study...
March 27, 2017: Injury
https://www.readbyqxmd.com/read/28361015/development-of-an-internally-braced-prosthesis-for-total-talus-replacement
#7
Markus Regauer, Mirjam Lange, Kevin Soldan, Steffen Peyerl, Sebastian Baumbach, Wolfgang Böcker, Hans Polzer
Total loss of talus due to trauma or avascular necrosis, for example, still remains to be a major challenge in foot and ankle surgery with severely limited treatment options. Implantation of a custom made total talar prosthesis has shown promising results so far. Most important factors for long time success are degree of congruence of articular surfaces and ligamentous stability of the ankle. Therefore, our aim was to develop an optimized custom made prosthesis for total talus replacement providing a high level of primary stability...
March 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28306181/total-ankle-replacement-in-patients-with-haemophilic-arthropathy-primary-arthroplasty-and-conversion-of-painful-ankle-arthrodesis-to-arthroplasty
#8
M Preis, T Bailey, M Jacxsens, A Barg
INTRODUCTION: There are two general surgical approaches for operative treatment of end-stage haemophilic ankle arthropathy: ankle arthrodesis and total ankle replacement (TAR). AIM: The aim of this study was to determine intraoperative and postoperative complications and evaluate the mid-term clinical and radiographic outcomes of TAR in patients with haemophilic arthropathy. METHODS: Fourteen patients with a mean age of 51.4 ± 10.2 years (range = 32...
March 17, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28296225/treatment-of-medial-malleolus-or-pure-deltoid-ligament-injury-in-patients-with-supination-external-rotation-type-iv-ankle-fractures
#9
Xu Wang, Chao Zhang, Jian-Wen Yin, Chen Wang, Jia-Zhang Huang, Xin Ma, Cheng-Wei Wang, Xue Wang
OBJECTIVE: To investigate the effect of internal fixation on postoperative ankle function in patients with supination-external rotation type IV ankle fractures, including medial malleolus fractures and deltoid ligament injury. METHODS: Between January 2012 and June 2014, patients with medial structure injuries were enrolled in this study and assigned to the medial malleolus fracture group or the deltoid ligament group. The surgical procedures for the two groups were documented...
February 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28293302/3-d-computer-modelling-of-malunited-posterior-malleolar-fractures-effect-of-fragment-size-and-offset-on-ankle-stability-contact-pressure-and-pattern
#10
Teresa Alonso-Rasgado, David Jimenez-Cruz, Michael Karski
BACKGROUND: The positioning of the fracture fragment of a posterior malleolus fracture is critical to healing and a successful outcome as malunion of a posterior malleolar fracture, a condition seen in clinical practice, can affect the dynamics of the ankle joint, cause posterolateral rotational subluxation of the talus and ultimately lead to destruction of the joint. Current consensus is to employ anatomic reduction with internal fixation when the fragment size is larger than 25 to 33% of the tibial plafond...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/28292290/comparison-of-the-direct-and-indirect-reduction-techniques-during-the-surgical-management-of-posterior-malleolar-fractures
#11
Hong-Fei Shi, Jin Xiong, Yi-Xin Chen, Jun-Fei Wang, Xu-Sheng Qiu, Jie Huang, Xue-Yang Gui, Si-Yuan Wen, Yin-He Wang
BACKGROUND: The optimal method for the reduction and fixation of posterior malleolar fracture (PMF) remains inconclusive. Currently, both of the indirect and direct reduction techniques are widely used. We aimed to compare the reduction quality and clinical outcome of posterior malleolar fracture managed with the direct reduction technique through posterolateral approach or the indirect reduction technique using ligamentotaxis. METHODS: Patients with a PMF involving over 25% of the articular surface were recruited and assigned to the direct reduction (DR) group or the indirect reduction (IR) group...
March 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28291191/which-lateral-malleolar-fractures-do-not-need-an-operation-commentary-on-an-article-by-simo-nortunen-md-et-al-dynamic-stress-testing-is-unnecessary-for-unimalleolar-supination-external-rotation-ankle-fractures-with-minimal-fracture-displacement-on-lateral-radiographs
#12
https://www.readbyqxmd.com/read/28291180/dynamic-stress-testing-is-unnecessary-for-unimalleolar-supination-external-rotation-ankle-fractures-with-minimal-fracture-displacement-on-lateral-radiographs
#13
Simo Nortunen, Hannu-Ville Leskelä, Heidi Haapasalo, Tapio Flinkkilä, Pasi Ohtonen, Harri Pakarinen
BACKGROUND: This study aimed to identify factors from standard radiographs that contributed to the stability of the ankle mortise in patients with isolated supination-external rotation fractures of the lateral malleolus (OTA/AO 44-B). METHODS: Non-stress radiographs of the mortise and lateral views, without medial clear space widening or incongruity, were prospectively collected for 286 consecutive patients (mean age, 45 years [range, 16 to 85 years]), including 144 female patients (mean age, 50 years [range, 17 to 85 years]) and 142 male patients (mean age, 40 years [range, 16 to 84 years]) from 2 trauma centers...
March 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28283180/does-intra-articular-load-distribution-change-after-lateral-malleolar-fractures-an-in-vivo-study-comparing-operative-and-non-operative-treatment
#14
Christian Deml, Martin Eichinger, Wouter F van Leeuwen, Stefanie Erhart, Simon A Euler, Alexander Brunner
PURPOSE: The impact of isolated malleolar fractures on the intra-articular load distribution within the ankle joint has been studied in several biomechanical cadaver studies during the last decades. Recently, computed tomography osteoabsorptiometry (CT-OAM) has been proposed as a valuable tool to assess intra-articular joint load distribution in vivo. The purpose of this retrospective matched pair analysis was to apply CT-OAM to evaluate in vivo changes of talar load distribution after lateral malleolar fractures in patients treated with open anatomic reduction and internal fixation (ORIF) compared to patients treated non-operatively...
March 6, 2017: Injury
https://www.readbyqxmd.com/read/28279427/finite-element-analysis-of-the-three-different-posterior-malleolus-fixation-strategies-in-relation-to-different-fracture-sizes
#15
Adeel Anwar, Decheng Lv, Zhi Zhao, Zhen Zhang, Ming Lu, Muhammad Umar Nazir, Wasim Qasim
PURPOSE: Appropriate fixation method for the posterior malleolar fractures (PMF) according to the fracture size is still not clear. Aim of this study was to evaluate the outcomes of the different fixation methods used for fixation of PMF by finite element analysis (FEA) and to compare the effect of fixation constructs on the size of the fracture computationally. MATERIALS AND METHODS: Three dimensional model of the tibia was reconstructed from computed tomography (CT) images...
February 20, 2017: Injury
https://www.readbyqxmd.com/read/28276651/realignment-surgery-for-malunited-ankle-fracture
#16
Chang-Jun Guo, Xing-Cheng Li, Mu Hu, Yang Xu, Xiang-Yang Xu
OBJECTIVE: To investigate the characteristics and the results of realignment surgery for the treatment of malunited ankle fracture. METHODS: Thirty-three patients with malunited fractures of the ankle who underwent reconstructive surgery at our hospital from January 2010 to January 2014 were reviewed. The tibial anterior surface angle (TAS), the tibiotalar tilt angle (TTA), the malleolar angle (MA), and the tibial lateral surface angle (TLS) were measured. Clinical assessment was performed with use of the American Orthopaedic Foot and Ankle Society (AOFAS) scale and visual analogue scale (VAS) scores, and the osteoarthritis stage was determined radiographically with the modified Takakura classification system...
February 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28228100/influence-of-hooks-and-a-lag-screw-on-internal-fixation-plates-for-lateral-malleolar-fracture-a-biomechanical-and-ergonomic-study
#17
Rina Sakai, Masataka Uchino, Terumasa Yoneo, Yasuaki Ohtaki, Hiroaki Minehara, Terumasa Matsuura, Tsutomu Gomi, Masanobu Ujihira
BACKGROUND: For internal fixation of AO classification Type B lateral malleolar fracture, insertion of lag screws into the fracture plane and fixation with a one-third tubular plate as a neutralization plate are the standard treatment procedures. The one-third tubular plate is processed to a hook shape and hung on the distal end of the fibula. In this study, to compare the function of the hook and lag screws of a one-third tubular plate and LCP for osteosynthesis of lateral malleolar fracture, mechanical indices of internal fixation were compared among the one-third tubular plates with lag screws with and without the hook and a locking compression plate...
February 23, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28219637/malreduction-of-syndesmosis-injury-associated-with-malleolar-ankle-fracture-can-be-avoided-using-weber-s-three-indexes-in-the-mortise-view
#18
Kentaro Futamura, Tomonori Baba, Atsuhiko Mogami, Itaru Morohashi, Akio Kanda, Osamu Obayashi, Kazuo Sato, Yasuhisa Ueda, Yoshiaki Kurata, Hideki Tsuji, Kazuo Kaneko
PURPOSE: Malalignment of syndesmosis is generally associated with a poor outcome, yet occurs at a high rate in malleolar ankle fractures. In this study, we examine whether malreduction of syndesmosis injury associated with malleolar ankle fracture can be avoided using Weber's three indexes in the mortise view. MATERIALS AND METHODS: Of 156 patients with malleolar ankle fracture who underwent surgery from December 2012 to March 2016 at two medical facilities, 24 patients who received syndesmotic screw fixation were included in the study...
February 14, 2017: Injury
https://www.readbyqxmd.com/read/28203338/the-predictive-value-of-pulse-oximeters-for-pulse-improvement-after-angiography-in-infants-and-children
#19
Mohammad-Reza Alipour, Mazyar Rastegar, Mehdi Ghaderian, Seyedeh-Mahdieh Namayandeh, Reza Faraji, Zohreh Pezeshkpour
BACKGROUND: Information from pulse oximeter waves confirms the presence of a pulse and helps obtain waves from tissue when the supplying artery is not readily accessible. OBJECTIVES: This study determined the predictive value of pulse oximeters for detecting improved arterial pulses after angiography. PATIENTS AND METHODS: This cross-sectional, multi-center study included 467 4-day-old to 12-year-old patients and was conducted from January 2012 to January 2016...
October 2016: Iranian Journal of Pediatrics
https://www.readbyqxmd.com/read/28196041/change-in-talar-translation-in-the-coronal-plane-after-mobile-bearing-total-ankle-replacement-and-its-association-with-lower-limb-and-hindfoot-alignment
#20
Young Yi, Jae-Ho Cho, Ji-Beom Kim, Jae-Young Kim, Su-Yeon Park, Woo Chun Lee
BACKGROUND: Mobile-bearing total ankle replacement (TAR) enables motion at the tibial implant-polyethylene insert interface. This motion could lead to coronal translation of the talus relative to the tibia and may affect radiographic outcome. We aimed to assess the translation of the talus before and after mobile-bearing TAR to determine whether translation of the talus after TAR is associated with coronal plane alignment of the lower limb and hindfoot as well as to investigate the complications associated with talar translation...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
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