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https://www.readbyqxmd.com/read/28854764/extramedullary-tibial-bone-cutting-using-medial-cortical-line-in-total-knee-arthroplasty
#1
Ju-Hyung Yoo, Chang-Dong Han, Hyun-Cheol Oh, Sang-Hoon Park, Se-Han Jung, Yun-Jae Lee
Purpose: This study aims to identify the effectiveness of the medial cortical line for attaining a more accurate tibial component alignment in proximal tibial resection using an extramedullary alignment rod. Materials and Methods: The study examined 100 cases of total knee arthroplasty performed from December 2013 to February 2014 in a retrospective manner. On a preoperative anteroposterior (AP) radiograph of the entire tibia, we identified the medial cortical line that runs parallel to the tibial anatomical axis and passes the medial tibial spine, and measured the point where the medial cortical line crosses between the medial malleolus and the lateral malleolus in the ankle joint...
September 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28828747/patient-reported-outcomes-correlate-with-functional-scores-after-opening-wedge-high-tibial-osteotomy-a-clinical-study
#2
Seung-Beom Han, Jong-Hee Lee, Seul-Gi Kim, Chun-Guang Cui, Dong-Won Suh, Seung-Yup Lee, Ki-Mo Jang
PURPOSE: The purpose of this study was to assess post-operative patient subjective satisfaction and to analyze associated peri-operative factors following biplanar medial open wedge high tibial osteotomy (OWHTO). METHODS: The study cohort consisted of 88 patients with a minimum of two years of follow-up. Patient satisfaction was evaluated with a questionnaire that assessed (1) overall satisfaction, (2) pain relief, (3) daily living functions, and (4) cosmesis. Patients were categorized into two groups (satisfied or unsatisfied) based on overall satisfaction questionnaire...
August 21, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28826786/surgical-treatment-of-chronic-lateral-ankle-instability-using-an-inferior-extensor-retinaculum-flap-a-retrospective-study
#3
Faycal Trichine, Toufik Friha, Azzedine Boukabou, Lamine Belaid, Terek Bouzidi, Mahdjoub Bouzitouna
Chronic lateral ankle instability causes significant problems with physical activity. The purpose of the present study was to evaluate the results of ligamentous retensioning combined with reinforcement using an extensor retinaculum flap. A consecutive series of 38 patients were included with a minimum follow-up duration of 2 years. The functional results were assessed using the Karlsson and American Orthopaedic Foot and Ankle Society scale scores. The pre- and postoperative radiologic assessment was performed using stress radiographs to measure varus tilt and anterior drawer tests...
August 17, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28819603/bilateral-ankle-fusion-in-leak-syndrome-induced-deformity-a-case-report
#4
Luis Sobral, Ana C Ângelo, Afonso Caetano, Joaquim Rodeia, Isabel Rosa
INTRODUCTION: Systemic capillary leak syndrome (SCLS) is a rare condition of unknown etiology defined by sudden episode of hypotension, high hematocrit, and low serum protein concentration due to capillary hyperpermeability. Several treatments have been published for this pathology and eventual compartment syndrome but not for the disabling consequences. This clinical case highlights the negative orthopedic consequences of a severe systemic attack and reports a subsequent deformity treatment option that resulted in the patient quality of life improvement...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28800855/radiographic-analysis-of-the-lower-limbs-using-the-hip-calcaneus-line-in-healthy-individuals-and-in-patients-with-varus-knee-osteoarthritis
#5
Toshikazu Tanaka, Koji Takayama, Shingo Hashimoto, Noriyuki Kanzaki, Shinya Hayashi, Ryosuke Kuroda, Tomoyuki Matsumoto
BACKGROUND: Several recent reports define the line from the centre of the femoral head to the lowest point of the calcaneus. The purpose of this study was to comparatively examine the usefulness of the hip-calcaneus (HC) line and hip-ankle (HA) line for the evaluation of lower-limb alignment in healthy individuals and in patients with osteoarthritis (OA). METHODS: Participants included 34 healthy individuals (mean age, 26.4years) and 34 patients with OA (mean age, 74...
August 8, 2017: Knee
https://www.readbyqxmd.com/read/28799095/assessment-of-hindfoot-alignment-using-mri-and-standing-hindfoot-alignment-radiographs-saltzman-view
#6
Nydia Büber, Marco Zanetti, Arno Frigg, Nadja Saupe
OBJECTIVE: To compare the hindfoot alignment measured on standing HAV radiographs (Saltzman view) and on non-weight-bearing coronal MR images. MATERIALS AND METHODS: The apparent moment arm was measured on weight-bearing conventional radiographs (Saltzman views) and on MRIs of the ankle in 50 consecutive patients (mean age, 54 years; age range, 18-77 years). The evaluation was performed independently by three readers using analogous reference points for both methods...
August 10, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28765981/-anatomic-stabilization-of-chronic-lateral-instability-of-the-ankle-gold-technique
#7
REVIEW
T Diermeier, B Scheiderer, L Lacheta, A B Imhoff
OBJECTIVES: Anatomical reconstruction of the lateral ligament complex in the ankle. INDICATIONS: Chronic lateral ankle instability. CONTRAINDICATIONS: Severe osteoarthritis, obesity, hindfoot varus, general contraindications (infection, circulatory disorders, diabetic foot syndrome). SURGICAL TECHNIQUE: Anatomical V‑shaped reconstruction of the lateral ligament complex with half of the peroneus brevis tendon and additional retinaculum stabilization...
August 1, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28721473/biomechanics-of-the-classic-metaphyseal-lesion-finite-element-analysis
#8
Andy Tsai, Brittany Coats, Paul K Kleinman
BACKGROUND: The classic metaphyseal lesion (CML) is strongly associated with infant abuse, but the biomechanics responsible for this injury have not been rigorously studied. Radiologic and CT-pathological correlates show that the distal tibial CML always involves the cortex near the subperiosteal bone collar, with variable extension of the fracture into the medullary cavity. Therefore, it is reasonable to assume that the primary site of bone failure is cortical, rather than intramedullary...
July 18, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28704304/arterial-tree-anomalies-in-patients-with-clubfoot-an-investigation-carried-out-at-soba-university-hospital
#9
Samir Shaheen, Mustafa E H Bahar, Almigdad H A Mohammed, Sara F A Elbadri, Ashok Johari
Vascular deficiencies and reduced perfusion of the anterior tibial artery and the dorsalis pedis artery were suggested as causes of congenital talipes equino varus (CTEV). In this study, we assessed the prevalence of arterial abnormalities in patients with CTEV (50 patients; 74 feet) compared with a normal control group (16 patients; 32 feet) by Doppler ultrasound and Ankle Brachial Index. The flow was normal in the control group and was deficient in 39.19% of clubfoot patients. In severe clubfoot cases, the deficiency was found to an extent of 76...
July 12, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28670918/novel-double-osteotomy-technique-of-distal-tibia-for-correction-of-asymmetric-varus-osteoarthritic-ankle
#10
Beat Hintermann, Roxa Ruiz, Alexej Barg
BACKGROUND: A most challenging condition for balancing a varus arthritic ankle is the presence of a defect in the medial tibial plafond. After our initial results with a medial tibial plafondplasty did not fulfill our expectations of success, we hypothesized that adding a correcting supramalleolar osteotomy of the distal tibia would move the loading force to the tibiotalar joint more medially and move the center of rotation of the talus more laterally. In this study, we analyzed midterm clinical and radiographic outcomes in patients with double tibial osteotomy...
June 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28657562/patient-specific-instrumentation-in-total-knee-arthroplasty
#11
Andrea Colombelli, Alberto Belluati, Yousef Rizqallah, Giovanni Guerra, Carlo Busatto
BACKGROUND AND AIM OF THE WORK: The international literature and analysis of the prosthetic registers highlight a significant relationship between the alignment of the components and the survival of prosthetic implants of the knee. The patient specific instrumentation (PSI) technology exploits the data obtained with the MRN for the production of cutting blocks (CB) useful to a TKA. Revisiting the recent international literature, comparing the results of the conventional method and PSI, numerous studies confirm a statistically significant difference of inliers (± 3 degrees) for HKA...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28656162/evaluation-of-changes-in-the-tibiotalar-joint-after-high-tibial-osteotomy
#12
Seyed Morteza Kazemi, Mohamad Qoreishi, Ehsan Behboudi, Alireza Manafi, Seyed Kamyar Kazemi
BACKGROUND: There are limited studies regarding the effects of high tibial osteotomy (HTO) on other areas of lower extremity. In current study, we investigated the changes of tibiotalar joint following HTO. METHODS: A total of 39 patients with genu varum requiring HTO were enrolled in this before and after study. The genu varus, joint diversion (JDA), lateral distal tibial (LDTA) and lateral distal tibial-ground surface (LDT-GSA) angles were measured before the operation and compared with 6 months after the surgery...
May 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/28634785/-imaging-and-preoperative-planning-for-osteotomies-around-the-knee
#13
REVIEW
D Pape, A Hoffmann, R Seil
Physiologic alignment of the human lower leg is well defined. The etiology for malalignment comprises constitutional, degenerative and posttraumatic conditions. Osteotomies around the knee can correct the malalignment, provided that the origin of deviation is in proximity of the knee center. Crucial factors for the evaluation of axis deviation are the weight-bearing line, the mechanical axes of femur and tibia, the joint line angles and the center of the hip, knee and upper ankle joint. Careful preoperative planning is mandatory for reproducible clinical results...
August 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28633795/valgus-ankle-degenerative-arthritis-with-an-isolated-deltoid-insufficiency-and-tibial-varus-a-case-report
#14
Joo-Yul Bae, Hee-Jae Won, Dong-Kyo Seo
We report a case of valgus ankle degenerative arthritis due to chronic isolated deltoid insufficiency combined with tibial varus that was treated successfully with ankle joint preserving surgery. A 63-year-old male complained of right lateral ankle pain with 10 minutes of maximal pain-free walking time. The assessed American Orthopaedic Foot and Ankle ankle-hindfoot scale score was 33 points. The ankle joint showed 18° of valgus deformity with 6° of tibia varus. Medial displacement calcaneal osteotomy, supramalleolar open wedge osteotomy, and deltoid ligament imbrication were performed...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28632776/dynamic-knee-valgus-alignment-influences-impact-attenuation-in-the-lower-extremity-during-the-deceleration-phase-of-a-single-leg-landing
#15
Akihiro Tamura, Kiyokazu Akasaka, Takahiro Otsudo, Jyunya Shiozawa, Yuka Toda, Kaori Yamada
Dynamic knee valgus during landings is associated with an increased risk of non-contact anterior cruciate ligament (ACL) injury. In addition, the impact on the body during landings must be attenuated in the lower extremity joints. The purpose of this study was to investigate landing biomechanics during landing with dynamic knee valgus by measuring the vertical ground reaction force (vGRF) and angular impulses in the lower extremity during a single-leg landing. The study included 34 female college students, who performed the single-leg drop vertical jump...
2017: PloS One
https://www.readbyqxmd.com/read/28578795/heterotopic-ossification-after-total-ankle-replacement-the-role-of-prosthesis-alignment
#16
Sebastian Manegold, Alexander Springer, Kristin Landvoigt, Serafim Tsitsilonis
BACKGROUND: The aetiology of heterotopic ossifications (HO) after total ankle arthroplasty (TAR) remains controversial. The aim of the study was to evaluate the prevalence and localisation of HO and the effect of alignment. METHODS: 88 TARs with a series of radiological controls and follow-up of 36 months were evaluated. Frontal and sagittal alignment parameters (alfa and beta angle defined by Hintermann) and tibial coverage were evaluated. RESULTS: The prevalence and grading of HO increased over time, mostly in the posterior gutter...
June 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28566397/mediolateral-force-distribution-at-the-knee-joint-shifts-across-activities-and-is-driven-by-tibiofemoral-alignment
#17
I Kutzner, A Bender, J Dymke, G Duda, P von Roth, G Bergmann
AIMS: Tibiofemoral alignment is important to determine the rate of progression of osteoarthritis and implant survival after total knee arthroplasty (TKA). Normally, surgeons aim for neutral tibiofemoral alignment following TKA, but this has been questioned in recent years. The aim of this study was to evaluate whether varus or valgus alignment indeed leads to increased medial or lateral tibiofemoral forces during static and dynamic weight-bearing activities. PATIENTS AND METHODS: Tibiofemoral contact forces and moments were measured in nine patients with instrumented knee implants...
June 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28558996/supramalleolar-osteotomy-with-distraction-arthroplasty-in-treatment-of-varus-ankle-osteoarthritis-with-large-talar-tilt-angle-a-case-report-and-literature-review
#18
Hong-Mou Zhao, Xiao-Jun Liang, Yi Li, Ning Ning, Jun Lu
We treated a 57-year-old female with modified Takakura stage 3B varus ankle osteoarthritis. Her preoperative talar tilt angle was 21.3°. The patient wished to avoid ankle joint arthrodesis or replacement. Therefore, medial opening wedge supramalleolar osteotomy with fibular osteotomy was used for her varus ankle osteoarthritis. Also, fixed medial distraction arthroplasty was performed to improve her talar tilt. After 3 months, the external device was removed, and the patient was allowed partial weightbearing and began full weightbearing 4 months postoperatively after the osteotomy site had reached bony union radiographically...
May 27, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28557815/use-of-paley-classification-and-superankle-procedure-in-the-management-of-fibular-hemimelia
#19
Ruta M Kulkarni, Nitish Arora, Sagar Saxena, Sujay M Kulkarni, Yadwinder Saini, Rajiv Negandhi
BACKGROUND: Fibular hemimelia is the most common deficiency involving the long bones. Paley classification is based on the ankle joint morphology, identifies the basic pathology, and helps in planning the surgical management. Reconstruction surgery encompasses foot deformity correction and limb length equalization. The SUPERankle procedure is a combination of bone and soft tissue procedures that stabilizes the foot and addresses all deformities. METHODS: We retrospectively reviewed 29 consecutive patients (29 limb segments), surgically treated between December 2000 and December 2014...
May 26, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28549406/supramalleolar-osteotomy-for-tibial-component-malposition-in-total-ankle-replacement
#20
Manja Deforth, Nicola Krähenbühl, Lukas Zwicky, Markus Knupp, Beat Hintermann
BACKGROUND: Persistent pain despite a total ankle replacement is not uncommon. A main source of pain may be an insufficiently balanced ankle. An alternative to the revision of the existing arthroplasty is the use of a corrective osteotomy of the distal tibia, above the stable implant. This strictly extraarticular procedure preserves the integrity of the replaced joint. The aim of this study was to review a series of patients in whom a corrective supramalleolar osteotomy was performed to realign a varus misaligned tibial component in total ankle replacement...
May 1, 2017: Foot & Ankle International
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