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Posterior tibial

Tetsuro Ushio, Hideki Mizu-Uchi, Ken Okazaki, Yuan Ma, Umito Kuwashima, Yukihide Iwamoto
BACKGROUND: We evaluated the effect of cutting surface on the anteroposterior (AP) axis of the proximal tibia using a 3-dimensional (3D) bone model to ensure proper tibial rotational alignment in total knee arthroplasty. METHODS: 3D bone models were reconstructed from the preoperative computed tomography data of 93 Japanese osteoarthritis knees with varus deformity. The AP axis was defined as the perpendicular bisector of the medial and lateral condylar centers in a 3D coordinate system...
September 28, 2016: Journal of Arthroplasty
Kristof Nemeth
No abstract text is available yet for this article.
November 2016: Journal of Vascular Surgery
Andrew S Wilmot, Alexander T Ruutiainen, Prashant T Bakhru, Mark E Schweitzer, Nogah Shabshin
OBJECTIVE: Primary: to describe the presence and pattern of soft tissue edema in subchondral insufficiency fractures of the knee (SIFK). Secondary: to investigate the gender distribution and identify factors associated with disease progression. METHODS: MR images of 74 SIFKs in 74 patients were retrospectively reviewed for soft tissue edema presence and location, meniscal tears and extrusion and synovitis. The clinical records were reviewed for age, gender, and BMI...
November 2016: European Journal of Radiology
Tom Esparon, Callum M Thomson, Paul M Rea, Bilal Jamal
AIM: There is a risk of iatrogenic injury to the soft tissues of the calcaneus and this study assesses the risk of injury to these structures in circular frame calcaneal fracture fixation. MATERIALS AND METHODS: After olive tip wires were inserted, an L-shaped incision on the lateral and medial aspects of 5 formalin fixed cadaveric feet was performed to expose the underlying soft tissues. The calcaneus was divided into zones corresponding to high, medium and low risk using a grading system...
October 14, 2016: Injury
X Sala-Blanch, J Franco, R Bergé, R Marín, A M López, M Agustí
: Local anaesthetic injection between the tibial and commmon peroneal nerves within connective tissue sheath results in a predictable diffusion and allows for a reduction in the volume needed to achieve a consistent sciatic popliteal block. Using 3D ultrasound volumetric acquisition, we quantified the visible volume in contact with the nerve along a 5cm segment. METHODS: We included 20 consecutive patients scheduled for bunion surgery. Ultrasound guided popliteal block was performed using a posterior, out of plane approach at the level of división of the sciatic nerve...
October 20, 2016: Revista Española de Anestesiología y Reanimación
R Gaillard, S Lustig, A Peltier, V Villa, E Servien, P Neyret
BACKGROUND: Despite excellent long-term outcomes, posterior stabilisation by a third condyle continues to receive unwarranted criticism regarding patellar complications and instability. HYPOTHESIS: Complication rates with a tri-condylar posterior-stabilised implant are similar to those with other posterior-stabilised prostheses and have diminished over time due to improvements in prosthesis design. MATERIAL AND METHODS: Post-operative complications and revision rates were assessed retrospectively in a prospective cohort of 4189 consecutive patients who had primary total knee arthroplasty (TKA) using a tri-condylar posterior-stabilised implant (Wright-Tornier) and were then followed-up for at least 24 months...
October 19, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
Daniel S Chan, Paul M Balthrop, Brian White, David Glassman, Roy W Sanders
OBJECTIVE: To determine whether multiple approaches pose an increased risk to fracture healing when compared to a standard single approach in the treatment of pilon (OTA 43C) fractures. DESIGN: Retrospective review of a prospective database. SETTING: Level I academic trauma center and level II community trauma center. METHODS: From January 1, 2005 to December 31, 2011, all records of patients treated for OTA 43C fractures of the distal tibia were reviewed...
October 1, 2016: Journal of Orthopaedic Trauma
M Satheesh Kumar, Ayush Lohiya, Viviktha Ramesh, Priyamadhaba Behera, Sarika Palepu, S A Rizwan
OBJECTIVES: To compare pulse oximetry and Ankle-Brachial Index (ABI) with duplex ultrasonography as reference standard to determine the diagnostic accuracy for screening asymptomatic PVD in type 2 diabetes mellitus. METHODS: This cross-sectional study was conducted in 2012 at tertiary hospital in Madurai among diabetic patients attending the medicine outpatient department (OPD). Type 2 Diabetes Mellitus patients, asymptomatic with regards to symptoms and signs of PVD, aged above 40 years were included...
August 2016: Journal of the Association of Physicians of India
Christian Scheele, Matthias F Pietschmann, Christian Schröder, Thomas Grupp, Melanie Holderied, Volmar Jansson, Peter E Müller
BACKGROUND: Unicompartmental total knee arthroplasty (UKA) is a well-established treatment option for unicondylar osteoarthritis, and generally leads to better functional results than tricompartimental total knee arthroplasty (TKA). However, revision rates of UKAs are reported as being higher; a major reason for this is aseptic loosening of the tibial component due to implant-cement-bone interface fatigue. The objective of this study was to determine the effects of trabecular bone preparation, prior to implantation of tibial UKAs, on morphological and biomechanical outcomes in a cadaver study...
October 16, 2016: Knee
Kwang-Jun Oh, Young-Bong Ko, Sagar Jaiswal, In-Cheul Whang
The purpose of this study was to compare the osteoconductivity, and absorbability of hydroxyapatite or beta-tricalcium phosphate in clinical scenario of opening wedge high tibial osteotomy Total 41 knees of 40 patients with follow up period of more than 1 year were enrolled. These patients were divided into two groups, Group I (22 knees, 21 patients) used hydroxyapatite and Group II (19 knees, 19 patients) used beta-tricalcium phosphate as a substitute in the opening gap. According to proven method, the osteoconductivity was assessed radiographically by the extent of new bone formation at osteotomy space and absorbability was evaluated by measuring the area occupied by substitute at immediate postoperative, postoperative 6 months and 1 year...
December 2016: Journal of Materials Science. Materials in Medicine
Steven T Hendrix, Austin M Barrett, Bopha Chrea, William H Replogle, Josie M Hydrick, Gene R Barrett
Is there a correlation between increased posterior-inferior tibial slope angle and noncontact anterior cruciate ligament (ACL) injury? Does increasing the posterior-inferior tibial slope angle increase the risk of bilateral ACL injury? A computerized relational database (Access 2007; Microsoft Inc, Redmond, Washington) was used to conduct a retrospective review of patients undergoing bilateral or unilateral ACL reconstruction surgery or treatment by a single surgeon between 1995 and 2013. Included in the study were patients with bilateral and unilateral ACL injuries and patellofemoral pain syndrome with no associated ACL deficiency...
October 18, 2016: Orthopedics
Brad Meulenkamp, C Ryan Martin, Nicholas Desy, Paul Duffy, Rob Korley, Shannon Puloski, Richard Buckley
OBJECTIVES: To define the incidence, risk factors and anatomic location of articular malreductions in operatively treated lateral tibial plateau fractures DESIGN:: Prospective Cohort Study SETTING:: Academic Level 1 Trauma CentrePatients/Participants: Study subjects were patients entered into a prospective cohort study of tibial plateau fractures. INTERVENTIONS: Surgical Fixation of tibial plateau fractures and post-operative computed tomography (CT) scans. MAIN OUTCOME MEASURES: The primary outcome was incidence of articular malreduction...
October 7, 2016: Journal of Orthopaedic Trauma
Chase Bennett, Anthony Behn, Adam Daoud, Sean Nork, Bruce Sangeorzan, Gregory Dikos, Julius Bishop
OBJECTIVES: The preferred method of fixation for posterior malleolus fractures remains controversial, and practices vary widely among surgeons. The purpose of this study was to compare anterior-to-posterior lag screws to posterior buttress plating for fixation of posterior malleolus fractures in a human cadaveric model. METHODS: Posterior malleolus fractures involving 30% of the distal tibial articular surface were created in seven pairs of fresh frozen cadaveric ankles...
October 17, 2016: Journal of Orthopaedic Trauma
Qing-Hang Zhang, Andrew Cossey, Jie Tong
Periprosthetic bone strain distributions in some of the typical cases of total knee replacement (TKR) were studied with regard to the selection of material, design and the alignments of tibial components to examine which conditions are more forgiving than the others to stress shielding post a TKR. Four tibial components with two implant designs (cruciate sacrificing and cruciate retaining) and material properties (metal-backed (MB) and all-polyethylene (AP)) were considered in a specimen-specific finite element tibia bone model loaded in a neutral position...
October 10, 2016: Medical Engineering & Physics
F G Usuelli, C A Di Silvestri, R D'Ambrosi, C Maccario, E W Tan
PURPOSE: Medial displacement calcaneal osteotomy with flexor digitorum longus transfer is a common treatment for the management of the adult flatfoot associated with posterior tibial tendon dysfunction. In the literature, there is a paucity of information regarding the ability of patients to return to sport and recreational activities after this surgical procedure. The purpose of this retrospective clinical study was to assess the rate and type of athletic activities that patients participated in before and after medial displacement calcaneal osteotomy with flexor digitorum longus transfer...
October 15, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Mark F Reinking, Tricia M Austin, Randy R Richter, Mary M Krieger
CONTEXT: Medial tibial stress syndrome (MTSS) is a common condition in active individuals and presents as diffuse pain along the posteromedial border of the tibia. OBJECTIVE: To use cross-sectional, case-control, and cohort studies to identify significant MTSS risk factors. DATA SOURCES: Bibliographic databases (PubMed, Scopus, CINAHL, SPORTDiscus, EMBASE, EBM Reviews, PEDRo), grey literature, electronic search of full text of journals, manual review of reference lists, and automatically executed PubMed MTSS searches were utilized...
October 11, 2016: Sports Health
Atif S Khan, Susan K Patrick, Francois D Roy, Monica A Gorassini, Jaynie F Yang
The neural plasticity of spinal reflexes after two contrasting forms of walking training was determined in individuals with chronic, motor-incomplete spinal cord injury (SCI). Endurance Training involved treadmill walking for as long as possible, and Precision Training involved walking precisely over obstacles and onto targets overground. Twenty participants started either Endurance or Precision Training for 2 months and then crossed over after a 2-month rest period to the other form of training for 2 months...
2016: Neural Plasticity
Oui Sik Yoo, Yong Seuk Lee, Myung Chul Lee, Jae Hong Park, Jae Won Kim, Doo Hoon Sun
BACKGROUND: After open wedge high tibial osteotomy (OWHTO), the proximal fragment resembles the anatomy of the proximal tibia that is aligned in the anterior-posterior direction and the distal fragment resembles the anatomy of the mid shaft that is aligned in the proximal-distal direction. In addition, the medial portion of the proximal fragment becomes aligned medially and the medial portion of the distal fragment, laterally, depending on the magnitude of the posterior opening gap. Therefore, there would be a mismatch between the post-correction bony surface and the previous pre-contoured plate geometry...
October 10, 2016: BMC Musculoskeletal Disorders
Fabian Wong, Rebecca Mills, Nadeem Mushtaq, Roland Walker, Samrendu K Singh, Ali Abbasian
INTRODUCTION: Various methods using CT scan have been described to diagnose distal tibiofibular syndesmotic injuries. However, CT scan does not take into account the amount of cartilage within the distal tibiofibular joint and could therefore lead to false positive results. We present the first study correlating the findings of the distal tibiofibular syndesmosis on CT and MRI scans. METHODS: CT and MRI scan of consecutive patients over a period of 18 months, and of a time lapsed less than 12 months between the two imaging modalities, were reviewed...
June 23, 2016: Foot
Yohei Shimokochi, Jatin P Ambegaonkar, Eric G Meyer
CONTEXT:  Ground reaction force (GRF) and tibiofemoral force magnitudes and directions have been shown to affect anterior cruciate ligament loading during landing. However, the kinematic and kinetic factors modifying these 2 forces during landing are unknown. OBJECTIVE:  To clarify the intersegmental kinematic and kinetic links underlying the alteration of the GRF and tibiofemoral force vectors secondary to changes in the sagittal-plane body position during single-legged landing...
October 10, 2016: Journal of Athletic Training
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