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Distraction arthroplasty in osteoarthritis of the foot and ankle

World Journal of Orthopedics 2020年第3期11卷 145-157页

作者： Sherif Dabash Joshua R Buksbaum austin fragomen S Robert Rozbruch Limb Lengthening and Complex Reconstruction Service Weill Cornell Medical College Department of Orthopaedic SurgeryHospital for Special Surgery New YorkNY 10021United States SUNY Downstate Health Sciences University College of MedicineBrooklynNew YorkNY 11226United States

Post-traumatic osteoarthritis(PTOA)is a complex and painful problem in the foot and ankle.Ninety percent of osteoarthritis cases in the foot and ankle can be classified as post-traumatic.PTOA can affect any of the 33 joints in the foot and the ankle.Distraction arthroplasty is a method for treatment of early arthritic joints without fusing or replacing them and its effectiveness has been well documented.The purpose of this case series is to present our successful experiences and positive results using distraction arthroplasty to treat PTOA in the ankle,subtalar,first metatarsophalangeal,and second tarsometatarsal joints,and to present distraction arthroplasty as a viable alternative to invasive joint sacrificing procedures such as arthrodesis or arthroplasty.Distraction Arthroplasty effectively and safely treats PTOA and improves the stability of joints in the Foot and Ankle.Additionally,the use of bone marrow aspirate concentrate as an adjuvant can improve the long-term functional and structural outcomes of the joint,and can prolong the need for further,more aggressive surgical interventions such as fusion or arthroplasty.

关键词： Distraction arthroplasty First metatarso-phalangeal joint arthritis Second tarsometarsal joint arthritis Ankle arthritis Subtalar arthritis Post-traumatic osteoarthritis

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Proximal tibial osteotomy for genu varum:Radiological evaluation of deformity correction with a plate vs external fixator

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World Journal of Orthopedics 2021年第3期12卷 140-151页

作者： S Ali Ghasemi David T Zhang austin fragomen S Robert Rozbruch Department of Orthopedic Surgery Hospital for Special SurgeryWeill Medical College of Cornell UniversityNew YorkNY 10021United States

BACKGROUND High tibial osteotomy(HTO)is a well-known procedure for the correction of knee varus.The purpose of this study was to compare the radiological results and accuracy of deformity correction performed using two different techniques:acute opening wedge correction using a plate and gradual correction with a monolateral external fixator.AIM To compare of the radiological results of two different techniques:acute opening wedge correction(a plate and screw)and gradual correction(external fixator).METHODS A total of 43 patients with plates and 36 patients with external fixators were included.All patients had moderate uniplanar varus deformities.We measured radiographic parameters,including the mechanical axis deviation(MAD),medial proximal tibial angle(MPTA),Caton-Deschamps Index(CDI),posterior proximal tibial angle,and joint line obliquity angle(JLOA).The accuracy of MAD correction was calculated based on a correction goal of neutral or overcorrection for medial compartment arthritis.RESULTS Demographics including age,body mass index,sex,and preoperative deformities were similar between the groups.The MAD significantly improved from 23.6 mm medial to the midline(SD=8.2 mm)to 6.9 mm lateral to the midline(SD=5.4 mm)(P<0.001).The accuracy of MAD correction did not differ between the groups and was 96.1%(SD=8.1%)in the plate group and 98.2%(SD=5.2%)in the external fixator group(P=0.18).The MPTA significantly improved from 83.9°(SD=2.9°)to 90.9°(SD=3.3°)(P<0.001),and the change was similar between the groups.Differences were noted in patella height,with a CDI change of-19.2%(SD=13.7%)and 3.1%(SD=8.0%)for the plate and external fixator groups,respectively(P<0.001).The change in JLOA was 1.6 degrees(SD=1.1 degrees)and 0.9 degrees(SD=0.9 degrees)for the plate and external fixator groups,respectively(P=0.04).CONCLUSION Reliable correction of moderate varus alignment was achieved with both the acute opening wedge technique with a plate and the gradual monolateral external fixator technique.The patellar height decreased

关键词： High tibial osteotomy External fixator Gradual correction Plate and screw Genu varum Radiological

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