Current Issue : July - September Volume : 2016 Issue Number : 3 Articles : 5 Articles
Background: Although abduction of the acetabular component is considered to predict factors for\npolyethylene wear attributable to osteolysis, other radiographic factors have yet to be elucidated.\nThe purpose of the present study was to evaluate whether anteversion or change in implantation\nangle of the acetabular component influences polyethylene linear wear by using standing and supine\nradiographs of the hip joint. Methods: Standing and supine plain anteroposterior radiographs\nof 62 hip joints in which cementless total hip arthroplasty was performed were examined for polyethylene\nlinear wear rate (mm/year), pelvic inclination, and radiological inclination and anatomic\nanteversion of the acetabular component. Results: All correlation coefficients of measurements\nof polyethylene linear wear, pelvic inclination angle, anatomical anteversion angle and radiological\ninclination angle were calculated highly. And by the three-dimensional numerical analysis,\nanatomic anteversion of the acetabular component had at least some effect on the degree of\npolyethylene wear. Conclusion: This study suggests that increased anteversion of the acetabular\ncomponent reduces polyethylene linear wear in metal-on-polyethylene total hiparthroplasty....
Introduction. Current treatment strategies for osteoporotic vertebral compression fractures (VCFs) focus on cement-associated\nsolutions. Complications associated with cement application are leakage, embolism, adjacent fractures, and compromise in bony\nhealing. This study comprises a validatedVCFmodel in osteoporotic sheep in order to (1) evaluate a newcementless fracture fixation\ntechnique using titaniummesh implants (TMIs) and (2) demonstrate the healing capabilities in osteoporoticVCFs. Methods. Twelve\n5-year-old Merino sheep received ovariectomy, corticosteroid injections, and a calcium/phosphorus/vitamin D-deficient diet for\nosteoporosis induction. Standardized VCFs (type AO A3.1) were created, reduced, and fixed using intravertebral TMIs. Randomly\nadditional autologous spongiosa grafting (G1) or no augmentation was performed (G2, ...
Background. Delayed union and nonunion are common complications in atypical femoral fractures (AFFs) despite having good\nfracture fixation. Demineralized bone matrix (DBM) is a successfully proven method for enhancing fracture healing of the long\nbone fracture and nonunion and should be used in AFFs. This study aimed to compare the outcome after subtrochanteric AFFs\n(ST-AFFs) fixation with and without DBM. Materials and Methods. A prospective study was conducted on 9 ST-AFFs patients\nusing DBM (DBM group) during 2013-2014 and compared with a retrospective consecutive case series of ST-AFFs patients treated\nwithout DBM (2010ââ?¬â??2012) (NDBM group, 9 patients). All patients were treated with the same standard guideline and followed up\nuntil fractures completely united. Postoperative outcomes were then compared. Results. DBM group showed a significant shorter\nhealing time than NDBM group (28.1 Ã?± 14.4 versus 57.9 Ã?± 36.8 weeks, ...
We have reviewed 17 patients (18 hips) who required repeated open reduction for recurrent or\npersistent dislocation after a previous attempt at zigzag osteotomy combined with fibular allowgraft\nfor developmental dysplasia of the hip (DDH). The purposes of this study were to examine\npredictors of redislocation and to evaluate the long-term outcomes after revision surgery.\nThe mean age at primary open reduction was 24 months (13 to 36). The median time to the\nrecognition of failure was 4.6 months. The second reduction was performed at a mean age of\n26.3 months (17 to 42) and the mean age at final follow-up was 79.7 months (58 to 105) and the\nmean time follow-up was 42.4 months (37 to 76). We treated the hips with a new open reduction\nthrough an anteromedial approach. A constricted anteromedial capsule was always found as the\nmain factor; all had an intact anteromedial capsule, and there was an inverted transverse ligament\nin five cases and a very tight psoas tendon in another four cases, eversion of the limbus in\nsix cases, densing anterior capsule in five cases. We perform with the condition that all hips\nwere cleared of scar tissue; five hips had adductor tenotomy; four hips required release of the\npsoas tendon, five eversion of the limbus. Release of the transverse ligament was required in\nfive cases each. All hips with Kirschner wire through the femoral head into the acetabulum.\nThree hips required femoral shortening (average of 1.5 cm); a derotation varus osteotomy was\nperformed in two hips from ten and twelve weeks after repeated open reduction. Postoperative\nresults according to modified McKay criteria for clinical: excellent: 3 of 18 hips (16.7%); good: 8\nof 18 hips (44.4%); fair: 6 of 18 hips (33.3%); and poor: 1 of 18 hips (5.6%). We suggest that\ntechnical failure is usually the cause for redislocation with all that has an intact anteromedial\ncapsule. There was an inverted transverse ligament, tight psoas tendon, eversion of the limbus,\nand densing anterior capsule. We believe that abnormal femoral version and femoral head dysplasia\nare also important factors for redislocation too....
Background.The influence of psychiatric comorbidity on outcomes following inpatient management of upper extremity fractures\nis poorly understood. Methods.The National Hospital Discharge Survey was queried to identify patients admitted to US hospitals\nwith distal humerus fractures between 1990 and 2007. Patients were subdivided into 5 groups: depression, anxiety, schizophrenia,\ndementia, and no psychiatric comorbidity.Multivariable logistic regression analysis identified independent risk factors for adverse\nevents, requirement of blood transfusion, and discharge to another inpatient facility. Results. A cohort representative of 526,185\npatients was identified as having a distal humerus fracture. Depression, anxiety, and dementia were independently associated with\nhigher odds of in-hospital adverse events (...
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