The effects of age and gender on the diameter of the femoral canal in patients who undergo total hip replacement

2013 ◽  
Vol 95-B (3) ◽  
pp. 339-342 ◽  
Author(s):  
D. J. Milligan ◽  
S. O’Brien ◽  
D. Bennett ◽  
J. C. Hill ◽  
D. E. Beverland
2011 ◽  
Vol 36 (4) ◽  
pp. 879-886 ◽  
Author(s):  
Yi Shen ◽  
Weili Wang ◽  
Xiaomiao Li ◽  
Zude Liu ◽  
David C. Markel ◽  
...  

1993 ◽  
Vol 3 (2) ◽  
pp. 33-38
Author(s):  
G. Krakovits ◽  
L. Sass

The correct implacement of the femoral component is decisive in the longevity of the total hip replacement (THR). The stem has to be placed along the anatomical axis of the femur and accomodated to the internal wall of the femoral canal to prevent tilting, subsidence, torsion movement and its clinical disadvantages. The author discusses the biomechanical consideration as well as the operative method.


2021 ◽  
Vol 11 (4) ◽  
Author(s):  
Neetin P Mahajan ◽  
Lalkar Laxman Gadod ◽  
Ajay S Chandanwale ◽  
Prasanna Kumar G S ◽  
Mrugank Narvekar ◽  
...  

Introduction: Primary total hip replacement in hypo plastic proximal femur is difficult due to the presence of a small canal, soft- tissue contracture, fragility of bone, and poor femoral cement mantle when used. Intraoperatively, there could be occurrence of fracture of the femur, inadequate fit, and fill with cement less femoral component. It is found unilaterally in cases of osteonecrosis of femoral head, post- traumatic, and in sequelae of childhood septic arthritis. Case Report: A 45-year- old male patient presented to the OPD with complaints of pain in the left hip and difficulty in walking since for 4 years. The patient had a history of fever and swelling over the left hip in childhood with no treatment taken for the same. X-ray of pelvis with both hips showed deformed femoral head, short neck, narrow femoral canal (Grade 1 Dorr), and arthritic changes in acetabulum. We managed with total hip replacement using Wagner cone stem. Postoperatively, the patient is having good range of motion and having no difficulty in walking and weight- bearing. Functional outcome is good as per Harris hip score. Conclusion: Total hip replacement in hypo plastic femur with arthritis is always a challenging problem. It requires surgical expertise and proper implant selection and pre-operative planning, which prevents intraoperative and post-operative complications. Wagner cone stem is a very good option in managing this type of patients. Keywords: Unilateral hypo plastic proximal femur, childhood septic arthritis, narrow femoral canal (Grade 1 Dorr), total hip replacement, Wagner cone stem.


2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Þröstur Pétursson ◽  
Kyle Joseph Edmunds ◽  
Magnús Kjartan Gíslason ◽  
Benedikt Magnússon ◽  
Gígja Magnúsdóttir ◽  
...  

The variability in patient outcome and propensity for surgical complications in total hip replacement (THR) necessitates the development of a comprehensive, quantitative methodology for prescribing the optimal type of prosthetic stem: cemented or cementless. The objective of the research presented herein was to describe a novel approach to this problem as a first step towards creating a patient-specific, presurgical application for determining the optimal prosthesis procedure. Finite element analysis (FEA) and bone mineral density (BMD) calculations were performed with ten voluntary primary THR patients to estimate the status of their operative femurs before surgery. A compilation model of the press-fitting procedure was generated to define a fracture risk index (FRI) from incurred forces on the periprosthetic femoral head. Comparing these values to patient age, sex, and gender elicited a high degree of variability between patients grouped by implant procedure, reinforcing the notion that age and gender alone are poor indicators for prescribing prosthesis type. Additionally, correlating FRI and BMD measurements indicated that at least two of the ten patients may have received nonideal implants. This investigation highlights the utility of our model as a foundation for presurgical software applications to assist orthopedic surgeons with selecting THR prostheses.


1996 ◽  
Vol 78-B (6) ◽  
pp. 892-898 ◽  
Author(s):  
S. K. Bulstra ◽  
R. G. T. Geesink ◽  
D. Bakker ◽  
T. H. Bulstra ◽  
S. J. M. Bouwmeester ◽  
...  

1992 ◽  
Vol 68 (04) ◽  
pp. 436-441 ◽  
Author(s):  
Nigel E Sharrock ◽  
George Go ◽  
Robert Mineo ◽  
Peter C Harpel

SummaryLower rates of deep vein thrombosis have been noted following total hip replacement under epidural anesthesia in patients receiving exogenous epinephrine throughout surgery. To determine whether this is due to enhanced fibrinolysis or to circulatory effects of epinephrine, 30 patients scheduled for primary total hip replacement under epidural anesthesia were randomly assigned to receive intravenous infusions of either low dose epinephrine or phenylephrine intraoperatively. All patients received lumbar epidural anesthesia with induced hypotension and were monitored with radial artery and pulmonary artery catheters.Patients receiving low dose epinephrine infusion had maintenance of heart rate and cardiac index whereas both heart rate and cardiac index declined significantly throughout surgery in patients receiving phenylephrine (p = 0.0001 and p = 0.0001, respectively). Tissue plasminogen activator (t-PA) activity increased significantly during surgery (p <0.0005) and declined below baseline postoperatively (p <0.005) in both groups. Low dose epinephrine was not associated with any additional augmentation of fibrinolytic activity perioperatively. There were no significant differences in changes in D-Dimer, t-PA antigen, α2-plasmin inhibitor-plasmin complexes or thrombin-antithrombin III complexes perioperatively between groups receiving low dose epinephrine or phenylephrine. The reduction in deep vein thrombosis rate with low dose epinephrine is more likely mediated by a circulatory mechanism than by augmentation of fibrinolysis.


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