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Ankle arthroplasty

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https://www.readbyqxmd.com/read/27920333/accuracy-and-reproducibility-using-patient-specific-instrumentation-in-total-ankle-arthroplasty
#1
Justin Daigre, Gregory Berlet, Bryan Van Dyke, Kyle S Peterson, Robert Santrock
BACKGROUND: Implant survivorship is dependent on accuracy of implantation and successful soft tissue balancing. System instrumentation for total ankle arthroplasty implantation has a key influence on surgeon accuracy and reproducibility. The purpose of this study was to determine the accuracy and reproducibility of implant position with patient-specific guides for total ankle arthroplasty across multiple surgeons at multiple facilities. METHODS: This retrospective, multicenter study included 44 patients who received a total ankle implant (INBONE II Total Ankle System; Wright Medical Technology, Memphis, TN) using PROPHECY patient-specific guides from January 2012 to December 2014...
December 5, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27909123/comparative-study-of-computer-assisted-total-knee-arthroplasty-after-opening-wedge-osteotomy-versus-after-unicompartmental-arthroplasty
#2
R Pailhé, J Cognault, J Massfelder, A Sharma, R-C Rouchy, B Rubens-Duval, D Saragaglia
AIMS: The role of high tibial osteotomy (HTO) is being questioned by the use of unicompartmental knee arthroplasty (UKA) in the treatment of medial compartment femorotibial osteoarthritis. Our aim was to compare the outcomes of revision HTO or UKA to a total knee arthroplasty (TKA) using computer-assisted surgery in matched groups of patients. PATIENTS AND METHODS: We conducted a retrospective study to compare the clinical and radiological outcome of patients who underwent revision of a HTO to a TKA (group 1) with those who underwent revision of a medial UKA to a TKA (group 2)...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27896394/the-orientation-of-the-surgical-epicondylar-axis-varies-in-varus-and-non-varus-knees-in-the-coronal-plane
#3
Yunjie Zhang, Xiaofeng Wang, Yunchao Shao, Qing Xia
PURPOSE: To investigate the orientations of the surgical epicondylar axis (SEA) of varus and non-varus knees in the coronal plane. METHODS: One-hundred and sixty-two knees from 81 Chinese patients undergoing total knee arthroplasty (TKA) were retrospectively investigated. The angle between the medial side of the femoral mechanical axis and the SEA (MA-SEA), as well as the physiological valgus angle, was measured in the coronal plane using three-dimensional reconstruction...
November 28, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27889092/current-quality-measurement-tools-are-insufficient-to-assess-complications-in-orthopedic-surgery
#4
Arjun S Sebastian, Stephanie F Polites, Amy E Glasgow, Elizabeth B Habermann, Robert R Cima, Sanjeev Kakar
PURPOSE: The American College of Surgeons National Surgical Quality Improvement Project (ACS-NSQIP) is a clinically-derived, validated tool to track outcomes in surgery. The Agency for Healthcare Research and Quality Patient Safety Indicators (AHRQ-PSI) are a set of computer algorithms run on administrative data to identify adverse events. The purpose of this study is to compare complications following orthopedic surgery identified by ACS-NSQIP and AHRQ-PSI. METHODS: Patients between 2010 and 2012 who underwent orthopedic procedures (arthroplasty, spine, trauma, foot and ankle, hand, and upper extremity) at our tertiary-care, academic institution were identified (n = 3,374)...
November 23, 2016: Journal of Hand Surgery
https://www.readbyqxmd.com/read/27871417/large-bm-intra-articular-allograft
#5
REVIEW
Joan R Williams, Michael E Brage
Posttraumatic tibiotalar arthritis is a challenging problem in young, active patients. Many of these patients do not want to pursue ankle arthrodesis after they fail conservative treatment measures, as they wish to preserve joint motion. Osteochondral shell allograft arthroplasty has been described as a reasonable alternative for treating these patients. The procedure itself is technically demanding; however, with improvements in surgical technique and adequate preoperative patient counseling, it provides improvement in ankle function and has good outcomes for most patients at long-term follow-up...
December 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27856127/radiographic-assessment-of-knee-ankle-alignment-after-total-knee-arthroplasty-for-varus-and-valgus-knee-osteoarthritis
#6
Fuqiang Gao, Jinhui Ma, Wei Sun, Wanshou Guo, Zirong Li, Weiguo Wang
BACKGROUND: There are unanswered questions about knee-ankle alignment after total knee arthroplasty (TKA) for varus and valgus osteoarthritis (OA) of the knee. The aim of this retrospective study was to assess knee-ankle alignment after TKA. METHODS: The study consisted of 149 patients who had undergone TKA due to varus and valgus knee OA. The alignment and angles in the selected knees and ankles were measured on full-length standing anteroposterior radiographs, both pre-operatively and post-operatively...
November 14, 2016: Knee
https://www.readbyqxmd.com/read/27846395/mid-term-functional-outcome-of-a-total-arthroplasty-of-the-first-metatarsophalangeal-joint
#7
Corina Nüesch, Annegret Mündermann, Monika Horisberger
BACKGROUND: Arthroplasty of the first metatarsophalangeal joint is an alternative treatment option for end-stage hallux rigidus to the current gold standard of arthrodesis. The aim of this study was to investigate the mid-term functional outcome of an anatomically shaped prosthesis for the first metatarsophalangeal joint using pedobarography. METHODS: Ten patients (12 affected feet; age at surgery: 62.1 (SD: 7.2) years) were investigated preoperatively and 52 (SD: 3) months postoperatively using pedobarography (EMED, novel GmbH, Munich, Germany)...
November 10, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27830485/lateral-compartment-osteophytes-are-not-associated-with-lateral-compartment-cartilage-degeneration-in-arthritic-varus-knees
#8
Wenzel Waldstein, Maximilian F Kasparek, Martin Faschingbauer, Reinhard Windhager, Friedrich Boettner
BACKGROUND: Progression of arthritis in the lateral compartment is one of the main failure modes of unicompartmental knee arthroplasty (UKA). The decision regarding whether to perform a medial UKA sometimes is made based on whether lateral-compartment osteophytes are visible on plain radiographs obtained before surgery, but it is not clear whether the presence of lateral-compartment osteophytes signifies that the cartilage in the lateral compartment is arthritic. QUESTIONS/PURPOSES: (1) Is the presence of lateral compartment osteophytes associated with biomechanical properties of lateral-compartment cartilage, and (2) are osteophytes in the lateral compartment associated with particular histologic features of cartilage in the lateral compartment? METHODS: Between May 2010 and January 2012, we performed 201 TKAs for varus osteoarthritis confirmed on standardized AP hip-to-ankle standing radiographs...
November 9, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27829727/windswept-deformities-an-indication-to-individualise-valgus-correction-angle-during-total-knee-arthroplasty
#9
Gautam M Shetty, Arun Mullaji, Ahmed Adel Khalifa, Abhik Ray
PURPOSE: We aimed to determine variation in femoral valgus correction angle (VCA) between the two limbs in a patient with windswept deformity undergoing total knee arthroplasty (TKA). METHODS: Femoral VCA was measured on full-length, hip-to-ankle, standing radiographs and was compared between the varus and the valgus limbs in 66 patients with windswept deformities. RESULTS: The mean VCA in varus knees was significantly higher compared to mean VCA in valgus knees (p = 0...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27825939/location-of-the-ankle-center-for-total-knee-arthroplasty
#10
Shigeki Asada, Shigeshi Mori, Shinji Inoue, Ichiroh Tsukamoto, Masao Akagi
BACKGROUND: The purpose of this study was to investigate the ankle center position as determined from the malleoli for total knee arthroplasty (TKA). METHODS: We retrospectively analyzed computed tomography data from 102 patients with osteoarthritic knees. The tibial anteroposterior (AP) axis and transmalleolar axis (TMA) were used as rotational reference axes of the knee and ankle joint, respectively. With these axes, we regarded the offset distance from the intermalleolar midpoint as the position of the ankle center and investigated any angular osteotomy errors on the proximal tibia when the ankle center was assumed to the intermalleolar midpoint...
November 5, 2016: Knee
https://www.readbyqxmd.com/read/27810307/standard-radiographs-are-not-sufficient-for-assessing-knee-mechanical-axis-in-patients-with-advanced-osteoarthritis
#11
Christopher D Stickley, Jennifer J Wages, Ronald K Hetzler, Samantha N Andrews, Cass K Nakasone
BACKGROUND: The use of standard radiographs, and measured tibiofemoral angle (TFA), to assess lower extremity alignment is commonly practiced despite limited knowledge of its relationship to the mechanical axis (MA), as measured on hip-to-ankle (HTA) radiographs. This study assessed the predictive accuracy of previously developed equations, developed gender-specific regression equations using predictors from standard radiographs, and the clinical effectiveness of these equations in a large sample of cases using HTA radiographs as a gold standard...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27807289/the-regionalization-of-total-ankle-arthroplasties-and-ankle-fusions-in-new-york-state-a-10-year-comparative-analysis
#12
John A Buza, James X Liu, Jeffrey Jancuska, Joseph A Bosco
: Background Total ankle arthroplasty (TAA) provides an alternative to ankle fusion (AF). The purpose of this study is to (1) determine the extent of TAA regionalization, as well as examine the growth of TAA performed at high-, medium-, and low-volume New York State institutions and (2) compare this regionalization and growth with AF. Methods The New York Statewide Planning and Research Cooperative System (SPARCS) administrative data were used to identify 737 primary TAA and 7453 AF from 2005 to 2014...
November 1, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27803219/the-monitoring-of-activity-at-home-after-total-hip-arthroplasty
#13
P A Toogood, M P Abdel, J A Spear, S M Cook, D J Cook, M J Taunton
AIMS: Total hip arthroplasty (THA) has well known subjective benefits, but little is known objectively about the recovery of mobility in the early post-operative period. PATIENTS AND METHODS: A total of 33 patients aged > 60 years who underwent elective primary THA had their activity monitored for 30 days post-operatively using an at-home (Fitbit) ankle accelerometer. Their mean age was 70.7 years (61 to 86); 15 (45.5%) were female. The rate of compliance and the mean level of activity were determined...
November 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27794622/mobile-bearing-medial-unicompartmental-knee-arthroplasty-restores-limb-alignment-comparable-to-that-of-the-unaffected-contralateral-limb
#14
Arun B Mullaji, Siddharth Shah, Gautam M Shetty
Background and purpose - Medial unicompartmental knee arthroplasty (UKA) is undertaken in patients with a passively correctable varus deformity. We investigated whether restoration of natural soft tissue tension would result in a lower limb alignment similar to that of the contralateral unaffected lower limb after mobile-bearing medial UKA. Patients and methods - In this retrospective study, hip-knee-ankle (HKA) angle, position of the weight-bearing axis (WBA), and knee joint line obliquity (KJLO) after mobile-bearing medial UKA was compared with that of the unaffected (clinically and radiologically) contralateral lower limb in 123 patients...
October 31, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27793137/time-trends-and-risk-factors-for-perioperative-complications-in-total-ankle-arthroplasty-retrospective-analysis-using-a-national-database-in-japan
#15
Takumi Matsumoto, Hideo Yasunaga, Hiroki Matsui, Kiyohide Fushimi, Naohiro Izawa, Tetsuro Yasui, Yuho Kadono, Sakae Tanaka
BACKGROUND: Total ankle arthroplasty (TAA) has become increasingly popular worldwide as an alternative to ankle arthrodesis for surgical treatment of end-stage ankle arthritis. The aim of this epidemiological study, using a national inpatient database in Japan, was to describe the volume, utilization, patient characteristics, and temporal trends regarding these procedures in Japan, and to identify the risk factors associated with perioperative adverse events in TAA. METHODS: This was a population-based, retrospective cohort study...
October 28, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27779156/preoperative-measurement-of-tibial-resection-in-total-knee-arthroplasty-improves-accuracy-of-postoperative-limb-alignment-restoration
#16
Pei-Hui Wu, Zhi-Qi Zhang, Shu-Ying Fang, Zi-Bo Yang, Yan Kang, Ming Fu, Wei-Ming Liao
BACKGROUND: Accuracy of implant placement in total knee arthroplasty (TKA) is crucial. Traditional extramedullary alignment instruments are fairly effective for achieving the desired mean tibial component coronal alignment. We modified the traditional tibial plateau resection technique and evaluated its effect on alignment restoration. METHODS: Two hundred and eighty-two primary TKAs in our hospital between January 2013 and December 2014 were enrolled in this retrospective study...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27756868/effect-of-insurance-on-rates-of-total-ankle-arthroplasty-versus-arthrodesis-for-tibiotalar-osteoarthritis
#17
Nathanael Heckmann, Alexander Bradley, Lakshmanan Sivasundaram, Ram Kiran Alluri, Eric W Tan
BACKGROUND: Several studies have examined the effect of insurance on the management of various orthopedic conditions. The purpose of our study was to assess the effect of insurance and other demographic factors on the operative management of tibiotalar osteoarthritis. METHODS: The National Inpatient Sample (NIS) database was used to identify patients who underwent a total ankle arthroplasty (TAA) or tibiotalar arthrodesis (TTA) for tibiotalar osteoarthritis. Insurance status was identified for each patient, and the proportions of each insurance type were computed for each operative modality...
October 18, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27756867/corrigendum
#18
(no author information available yet)
Oliver SM, Coetzee JC, Nilsson LJ, Samuelson KM, Stone RM, Fritz JE, Giveans MR. Early patient satisfaction results on a modern generation fixed-bearing total ankle arthroplasty. Foot Ankle Int 2016;37(9):938-943. (Original DOI: 10.1177/1071100716648736).
October 18, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27755494/thoracolumbar-realignment-surgery-results-in-simultaneous-reciprocal-changes-in-lower-extremities-and-cervical-spine
#19
Louis M Day, Subaraman Ramchandran, Cyrus M Jalai, Bassel G Diebo, Barthelemy Liabaud, Renaud Lafage, Themistocles Protopsaltis, Peter G Passias, Frank J Schwab, Shay Bess, Thomas J Errico, Virginie Lafage, Aaron J Buckland
STUDY DESIGN: Retrospective clinical and radiographic single-center study OBJECTIVE.: Assess simultaneous cervical spine and lower extremity compensatory changes with changes in thoracolumbar spinal alignment. SUMMARY OF BACKGROUND DATA: Full-body stereoradiographic imaging allows better understanding of reciprocal changes in cervical and lower extremity alignment in the setting of thoracolumbar malalignment. Few studies describe the simultaneous effect of alignment correction on these mechanisms...
October 17, 2016: Spine
https://www.readbyqxmd.com/read/27726920/a-rare-complication-of-total-knee-arthroplasty-type-l-complex-regional-pain-syndrome-of-the-foot-and-ankle
#20
Gözde Özcan Söylev, Hakan Boya
Complex regional pain syndrome (CRPS) is a painful and disabling disorder that usually affects the extremities. This complication may affect the knee joint after total knee arthroplasty (TKA). We report a unique case of CRPS of the foot and ankle, which was an unusual involvement site for CRPS after TKA.
October 7, 2016: Acta Orthopaedica et Traumatologica Turcica
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