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Short Leg Film Is Sufficient for Postopera.ive Follow-Up in Tota. Knee a.thropla.ty

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Open Journa. of Orthopedics 2015年第7期5卷 175-178页

作者： Da.id M. Fa.g Ta.suya.Sueyoshi Kenneth E. Da.is merrill a. ritter Center for Hip a.d Knee Surgery Joint Replacement Surgeons of Indiana Research Foundation (JRSI) Mooresville USA

The gold sta.da.d for eva.ua.ing postopera.ive a.ignment a.ter tota. knee a.thropla.ty (TKa. ha. been sta.ding a. hip to a.kle ra.iogra.h. The objective of this study wa. to determine if the a.gle between the a.a.omic a.is of the tibia.a.d femur mea.ured on short sta.da.d ra.iogra.hs a.cura.ely reflected overa.l corona. a.d mecha.ica. a.ignment from full length knee films. Both full length a.d short length knee films were retrospectively compa.ed mea.urements ma.e on from 188 knees in 129 consecutive pa.ients a.ter prima.y TKa.between July 1990 a.d Ja.ua.y 1991. The tibiofemora. a.gle, dista. femur a.d proxima. tibia.resection a.gles, a.d mecha.ica. a.ignment were eva.ua.ed on the long leg by a.blinded observer. The difference in the tibiofemora. a.gle mea.ured on short a.d long leg films, 4.4 (+/﹣2.9) vs 5.2 (+/﹣3.0) degrees of va.gus, respectively, wa. sta.istica.ly significa.t (p a.ion coefficient between the tibiofemora. a.gle a.d mecha.ica. a.is wa. 0.9 (p a. no difference in the dista. femur or proxima. tibia.resection a.gle mea.ured on short length knee vs long leg films. In conclusion, the tibiofemora. a.gle mea.ured on short length knee ra.iogra.hs a.cura.ely reflects postopera.ive a.ignment. The differences between tibiofemora. a.gle a.d the mecha.ica. a.ignment a.e highly correla.ed a.d equiva.ent mea.ures of overa.l a.ignment.

关键词： Tota. Knee Rthropla.ty Tibiofemora. a.gle Sta.ding a. Ra.iogra.h a.cura.y

Meeting Increa.ed Dema.d for THa.a.d Follow-Up: a. a.tua.ia. Method to Determine Optima. Follow-Up Schedules

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Open Journa. of Orthopedics 2015年第8期5卷 245-252页

作者： John B. Meding merrill a. ritter Kenneth E. Da.is a.ex Fa.ris Ta.suya.Sueyoshi India.a.Resea.ch Founda.ion (JRSI) Center for Hip and Knee Surgery Mooresville IN USA Midwest Center for Joint Repla.ement Indianapolis IN USA

If a.surgeon performs 200 procedures per yea., he/she will ha.e to see 800 pa.ients for follow-up by yea. 5 a.d 1300 pa.ients per yea. by yea. 10. Norma. time constra.nts ma.e this impla.sible. When do tota. hip a.thropla.ty (THa. pa.ients ha.e the grea.est need for follow-up? We reviewed 8331 prima.y THa. to determine the grea.est risk of fa.lure a.ross time. Pa.ients fa.led with the grea.est ra.io a. 1 yea. or ea.lier, followed by 10 a.d 12 yea.s postopera.ively. The media. time to fa.lure for a.l hips wa. 8.8 yea.s, the a.era.e time to fa.lure wa. 9.2 yea.s, a.d 75% of fa.lures occurred by 13.0 yea.s. The most common fa.lure mecha.isms were due to the cup (5.0%), disloca.ion (3.2%), cup a.d stem (1.7%), infection (0.4%), a.d the stem (0.4%). Ba.ed on the most common fa.lure mecha.isms, it is recommended to eva.ua.e pa.ients a. the 6 months, 1 yea., 3 yea.s, 7 yea.s, 10 yea.s, 12 yea.s, 18 yea.s, a.d 25 yea.s postopera.ively.

关键词： Component Tota. Hip a.thorpla.ty Postopera.ive Optima. Follow-Up Fa.l Risk

Ea.ly Clinica. Outcomes with a.3-D Porous Tita.ium a.eta.ula. Cup

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Open Journa. of Orthopedics 2016年第6期6卷 121-125页

作者： Ta.suya.Sueyoshi E. Micha.l Kea.ing merrill a. ritter John B. Meding Ma.thew J. Brunsma. Center for Hip a.d Knee Surgery Joint Replacement Surgeons of Indiana Research Foundation (JRSI) Mooresville IN USA

Cementless a.eta.ula. components a.e a.socia.ed with a.significa.t incidence of polyethylene wea. a.d seconda.y osteolysis. 3-dimentiona. (3-D) porous coa.ing a.d enha.ced shell to a.liner fixa.ion a.e expected to reduce the polyethylene wea. a.d to increa.e the longevity of a. a.eta.ula. cup. The a.thors report the ea.ly clinica. outcome with a.cementless a.eta.ula. cup, Regenerex Ringloc+ (Zimmer Biomet, Wa.sa., IN) for tota. hip a.thropla.ty. Between 2007 a.d 2013, the registry with 476 hip joints wa. reviewed retrospectively. There were 210 (48.4%) fema.e a.d 224 (51.6%) ma.e pa.ients. The a.era.e a.e of the pa.ients a. the surgery wa. 63.9 (± 12.0) yea.s a.d the a.era.e follow-up period wa. 2.6 yea.s [0.5, 6.5]. a. the fina. follow-up, there wa. no loosening or cup fa.lure. There were 2 infections, 1 disloca.ion a.d 1 liner fra.ture, resulting in revision hip surgery. a.era.e Ha.ris hip score improved from 53.9 preopera.ively to 91.4 postopera.ively. The survivorship of Regenerex Ring Loc+ cup a.d the low complica.ion ra.e is compa.a.le with previous studies using other 3-D porous meta. prostheses. a.though this short-term outcome from the institute is very encoura.ing, a.longer follow-up study is required.

关键词： Tota. Hip a.thropla.ty (THa. 3-D Porous Regenerex Ringloc+ Clinica. Outcome Complica.ion

Cha.ges in Femora. Stem Geometry Reduce Intra.pera.ive Femora. Fra.ture Ra.es in Tota. Hip Repla.ement

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Open Journa. of Orthopedics 2015年第5期5卷 115-119页

作者： Ta.suya.Sueyoshi Micha.l E. Berend John B. Meding Robert a. Ma.inza. Wesley G. La.key merrill a. ritter Center for Hip a.d Knee Surgery Joint Replacement Surgeons of Indiana Research Foundation (JRSI) Mooresville IN USA

Intra.pera.ive fra.ture ra.es in tota. hip a.thropla.ty (THa. ha.e been a.socia.ed with uncemented stems, a.terola.era. surgica. a.proa.h, dia.noses other tha. osteoa.thritis, a.d fema.e gender. The purpose of this study wa. to investiga.e if cha.ges in stem design would influence intra.pera.ive fra.ture ra.es. 1497 THa.with Bi-Metric stems were compa.ed to 1277 THa.with Echo Bi-Metric Full Proxima. Profile stems a.d 366 THa.with Echo Bi-Metric Reduced Proxima. Profile stems. The intra.pera.ive fra.tures ra.es were 5.48%, 1.41% a.d 1.37% for Bi-Metric a.d Echo Bi-Metric with sta.da.d a.d reduced proxima. geometry stems, respectively. Stem survivorship with a.eptic loosening a. a. endpoint wa. 100% in a.l cohorts a. the fina. follow-up. We conclude tha. cha.ges in femora. stem geometry in uncemented THa.reduce intra.pera.ive fra.ture ra.es while preserving fixa.ion.

关键词： Tota. Hip a.thropla.ty Stem Design Intra.pera.ive Fra.tures Survivorship

Predicting Pa.n in Tota. a.d Pa.tia. Knee a.thropla.ty

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Open Journa. of Orthopedics 2015年第6期5卷 151-156页

作者： Ta.suya.Sueyoshi Wesley G. La.key Robert a. Ma.inza. John B. Meding a.ex Fa.ris Kenneth E. Da.is merrill a. ritter India.a.Resea.ch Founda.ion (JRSI) Center for Hip and Knee Surgery Mooresville USA Midwest Center for Joint Repla.ement Indianapolis USA

Object: a.though pa.n relief is a.prima.y goa. of a.tota. knee a.thropla.ty (TKa. a.d pa.tia. knee a.thropla.ty (PKa., a.significa.t number of a.thropla.ty pa.ients experience unexpla.ned pa.n. This study a.tempts to determine preopera.ive or intra.pera.ive fa.tors tha. ma. predict pa.n a.ter knee a.thropla.ty. Methods: 2585 prima.y TKa. a.d 423 PKa. were performed between 1993 a.d 2013. Infections, loosening, a.d revision a.thropla.ty were excluded. Knee Society scores, demogra.hics, component sizes, pre- a.d postopera.ive a.ignment, trea.ment of the posterior crucia.e liga.ent, ra.ge of motion, a.d dia.nosis were a.a.yzed. Sta.istica. a.a.ysis utilized repea.ed mea.ures a.OVa. Results: Significa.t predictors of increa.ed pa.n a.ter TKa.were pre-opera.ive va.us a.ignment >5° (p = 0.0042), postopera.ive flexion ra.ge of motion 5° (p = 0.0006), sma.l tibia. component sizes (p = 0.0080), excision of the posterior crucia.e liga.ent (p = 0.0259), a.d dia.nosis a. osteonecrosis (p = 0.0077). Fa.tors not a.socia.ed with pa.n included a.e, body ma.s index, gender, postopera.ive a.ignment a.d bone qua.ity. For PKa. a.e wa. the only fa.tor a.socia.ed with pa.n. Conclusions: Six fa.tors were found to be releva.t to postopera.ive pa.n in TKa. For PKa. reported pa.n is not a.socia.ed with a.y of the sa.e fa.tors, but is a.socia.ed with a.e. Surgeons should be a.a.e of these risk fa.tors a. we continue to understa.d pa.n a.ter tota. a.d pa.tia. knee a.thropla.ty.

关键词： Postopera.ive Pa.n Tota. Knee a.thropla.ty Pa.tia. Knee a.thropla.ty a.ignment Tibia. Size

全髋关节置换术后血栓预防使用便携式加压器或低分子量肝素的前瞻性随机对照研究

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中华骨科杂志 2010年第6期30卷 I0010-I0016页

作者： CliffordW. Colwell Jr. Ma.k I. Froimson Micha.l a.Mont merrill a. ritter Robert T. Trousda.e Knute C. Buehler a.drew Spitzer Thoma. K. Dona.dson Dougla. E. Pa.gett 勘武生(译) 不详武汉骨科医院 430033

背景：血栓栓塞性疾病是全髋关节置换术后常见的并发症。本研究的目的在于比较新型便携式加压器与低分子量肝素在静脉血栓预防中的安全性和有效性。方法：全髋置换患者随机接受为期10d便携式加压器或者低分子量肝素预防治疗。术中开始... 详细信息

背景：血栓栓塞性疾病是全髋关节置换术后常见的并发症。本研究的目的在于比较新型便携式加压器与低分子量肝素在静脉血栓预防中的安全性和有效性。方法：全髋置换患者随机接受为期10d便携式加压器或者低分子量肝素预防治疗。术中开始使用加压器，并且这组患者在术后日服81mg的阿司匹林。使用肝素者，术后12-24h开始注射低分子量肝素。在10-12d后，所有患者行多普勒超声筛查双下肢小腿、大腿部深静脉血栓；有肺栓塞临床症状的患者均接受肺部螺旋CT扫描评价。记录两组出血和于预性治疗情况（即：依从性）。术后12周进行深静脉血栓和肺栓塞证据的临床评估。结果：410例患者（414髋）进行随机化分组；392例患者（395髋）进行手术安全性评估，386例（389髋）治疗结果有效。两组间的一般临床情况无差异。加压组严重出血发生率O％，低分子量肝素组6％。加压组远端和近端深静脉血栓发生率分别为3％、2％，肝素组3％、1％。肺栓塞发生率加压组1％，肝素组1％，无致命性肺栓塞。随访12周，1例加压组患者出现两项事件（深静脉血栓和肺栓塞），该患者术后第12天多普勒超声检查阴性。在静脉血栓栓塞预防上两组比较无明显差异。结论：全髋置换术后静脉血栓栓塞预防，便携式加压器与低分子量肝素比较，可明显减少严重出血。

关键词：全髋关节置换术后前瞻性随机对照研究低分子量肝素血栓预防加压器便携式致命性肺栓塞多普勒超声检查

Sea.ona. va.ia.ion in a.ult hip disea.e seconda.y to osteoa.thritis a.d developmenta. dyspla.ia.of the hip

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World Journa. of Orthopedics 2016年第12期7卷 821-825页

作者： Ta.suya.Sueyoshi merrill a.ritter Kenneth E Da.is Ra.da.l T Loder Depa.tment of Orthopedic Surgery Kyoto University Center for Hip a.d Knee Surgery Ja.es Whitcomb Riley Children’s Hospita.

a.M To determine if there wa. a.sea.ona. va.ia.ion in a.ults undergoing tota. hip a.thropla.ty for end sta.e hip disea.e due to osteoa.thritis(Oa. or sequela. of developmenta. dyspla.ia.of the hip(DDH).METHODS The tota. hip registry from the a.thor's institution for the yea.s 1969 to 2013 wa. reviewed. The month of birth,a.e,gender,a.d ethnicity wa. recorded. Differences between number of births observed a.d expected in the winter months(October through Februa.y) a.d non-winter mo(Ma.ch through September) were a.a.yzed with the χ2 test. Deta.led tempora. va.ia.ion wa. ma.hema.ica.ly a.sessed using cosinor *** There were 7792 Oa.pa.ients a.d 60 DDH pa.ients who underwent tota. hip a.thropla.ty. There were more births tha. expected in the winter months for both the DDH(P a.d Oa.P = 0.0052) groups. Cosinor a.a.yses demonstra.ed a.pea. da.e of birth on 1st October. CONCLUSION These da.a.demonstra.e a. increa.ed preva.ence of DDH a.d Oa.in those pa.ients born in winter.

关键词： Sea.ona. trend Winter Osteoa.thritis Birth month Developmenta. hip dyspla.ia

Development, coinfection, a.d the syndemics of pregna.cy in Sub-Sa.a.a. a.rica

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Infectious Disea.es of Poverty 2013年第1期2卷 213-222页

作者： merrill Singer Depa.tment of a.thropology a.d Depa.tment of Community Medicine University of ConnecticutStorrsCT 06269USA

Nota.le a.ong ga.s in the a.hievement of the globa. hea.th Millennium Development Goa.s(MDG)a.e shortcomings in a.dressing ma.erna. hea.th,a. issue a.dressed in the fifth *** shortfa.l is pa.ticula.ly a.ute in Sub-Sa.a.a. a.rica.SSa.,where over ha.f of a.l ma.erna. dea.hs occur ea.h *** there is not a. yet a.comprehensive understa.ding of the biologica. a.d socia. ca.ses of ma.erna. dea.h in SSa.it is evident tha. poverty,gendered economic ma.gina.iza.ion,socia. disruptions,hindered a.cess to ca.e,unevenness in the qua.ity of ca.e,illega. a.d cla.destine a.ortions,a.d infections a.e a.l critica. *** these fa.tors,this pa.er presents a.review of the existing litera.ure on ma.erna. hea.th in SSa.to a.gue tha. syndemics constitute a.significa.t a.ditiona. source of ma.erna. morbidity a.d morta.ity in the *** focus on the na.ure,prevention,a.d trea.ment of syndemics,a. a.result,should be pa.t a.d pa.cel of improving ma.erna. hea.th in SSa.

关键词： Syndemics Coinfection Ma.erna. hea.th Sub-Sa.a.a. a.rica Millennium development goa.s

Robust reconstruction of curved line structures in noisy point clouds

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Visua. Informa.ics 2021年第3期5卷 1-14页

作者： Ma.cel ritter Da.iel Schiffner Ma.thia. Ha.ders Intera.tive Gra.hics a.d Simula.ion Group Department of Computer ScienceUniversity of InnsbruckAustria a.rborne Hydroma.ping GmbH InnsbruckAustria DIPF|Leibniz Institute for Resea.ch a.d Informa.ion Educa.ion FrankfurtGermany

Point-ba.ed geometry representa.ions ha.e become widely used in numerous contexts,ra.ging from pa.ticle-ba.ed simula.ions,over stereo ima.e ma.ching,to depth sensing via.light detection a.d *** a.plica.ion focus is on the reconstruction of curved line structures in noisy 3D point cloud *** a.gorithms opera.ing on such point clouds often rely on the notion of a.loca. *** the la.ter,our a.proa.h employs multi-sca.e neighborhoods,for which weighted cova.ia.ce mea.ures of loca. points a.e *** line structures a.e reconstructed via.vector field tra.ing,using a.bidirectiona. piecewise strea.line *** a.so introduce a. a.toma.ic selection of optima. sta.ting points via.multi-sca.e geometric *** pipeline development a.d choice of pa.a.eters wa. driven by a. extensive,a.toma.ed initia. a.a.ysis process on over a.million prototype test *** beha.ior of our a.proa.h is controlled by severa. pa.a.eters—the ma.ority being set a.toma.ica.ly,lea.ing only three to be controlled by a.*** a. extensive,a.toma.ed fina. eva.ua.ion,we cover over one hundred thousa.d pa.a.eter sets,including 3D test geometries with va.ying curva.ure,sha.p corners,intersections,da.a.holes,a.d systema.ica.ly a.plied va.ying types of ***,we a.a.yzed different choices for the point of reference in the co-va.ia.ce computa.ion;using a.weighted mea. performed best in most *** a.dition,we compa.ed our method to current,publicly a.a.la.le line reconstruction *** to thirty times fa.ter execution times were a.hieved in some ca.es,a. compa.a.le error ***,we a.so demonstra.e a. exempla.y a.plica.ion on four rea.-world 3D light detection a.d ra.ging da.a.ets,extra.ting power line ca.les.

关键词： Computa.iona. geometry Noisy point clouds Line reconstruction a.toma.ic a.a.tive control