Total Hip Replacement

Murray, David G.

doi:10.1001/jama.1995.03520480070043

Cited by 119 publications

(4 citation statements)

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“…Hip replacement surgery is commonly used to treat pain and disability due to cartilage injury, synovial fluid reduction, and osteoarthritis [1,2]. However, debris from friction on joint contact surfaces enters circulation, and many patients require revision surgery after 15-20 years [3].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis and Trajectory Tracking Control for a Parallel Manipulator with Joint Friction

Chen

Pang

2022

Applied Sciences

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To overcome the bearing capacity deficiencies of traditional serial hip joint simulators, complex trajectory simulation, among others, as well as a parallel manipulator with two pairs of artificial hip joints and two moving platforms are proposed. The movements and driving forces of the parallel manipulator under the required motion and loading are studied to provide a basis for further research. In this study, the modeling and analysis of inverse kinematics and dynamics for a parallel manipulator with joint friction are derived. In the inverse kinematic model, kinematic relationships between the linear module slider and the moving platform are established, and expressions for the slider are deduced. Subsequently, by analyzing the frictional forces of the artificial hip joint and thrust ball bearing, a rigid body dynamics model of the parallel manipulator with joint friction is established, which is subsequently decomposed into four driving torques associated with the moving platform, joint lever, slider, and screw. Finally, the difference in the kinematic performance between the two moving platforms is analyzed using numerical simulations and experiments, and the accuracy of the established model is verified.

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Section: Introductionmentioning

confidence: 99%

Dynamic Analysis and Trajectory Tracking Control for a Parallel Manipulator with Joint Friction

Chen

Pang

2022

Applied Sciences

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“…Total hip arthroplasty (THA) is one of the most successful orthopedic procedures widely used to treat advanced hip joint arthritis and femoral neck fractures [ 1 , 2 ]. More than 450,000 THA procedures are performed in the United States every year, with expectations to reach 572,000 by 2030 [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Intraprosthetic Dislocation of Dual-Mobility Total Hip Arthroplasty: The Unforeseen Complication

Hermena¹,

Tawfeek²,

Latimer³

2021

Cureus

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Total hip arthroplasty (THA) is one of the most successful and widely accepted orthopedic procedures. Instability after THA is one of the most significant postoperative complications. Dual-mobility THA components were introduced in 1974 to overcome the risk of instability by increasing the jump distance. Dual-mobility bearings couple two articulations, namely, one between a 22-28 mm prosthetic head and polyethylene liner and another larger articulation between the polyethylene liner and the metal cup. Dislocation of the polyethylene liner and the consequent direct articulation between the prosthetic head and metal cup is recognized as intraprosthetic dislocation (IPD). This mode of THA failure is specific to dual-mobility implants. Despite the reduced incidence of IPD in modern dual-mobility implants compared to the early designs, iatrogenic IPD can occur during closed reduction of dislocated polyethylene liner-metal cup articulation. IPD requires timely diagnosis and early surgical intervention to minimize the necessity of major revision surgeries. This study presents a comprehensive review for dual-mobility-bearing THA, including the history and biomechanics, and focuses on the pathomechanics, diagnosis, and management of IPD.

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“…PJI occurs in up to 2% of primary hip and knee arthroplasties[1, 2] although reporting rates vary. Successful management of PJI requires eradication of infection and restoration of joint function.…”

Section: Introductionmentioning

confidence: 99%

Radiological features do not predict failure of two-stage arthroplasty for prosthetic joint infection: a retrospective case–control study

Dunachie

Teh

Ejindu

et al. 2014

BMC Musculoskelet Disord

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BackgroundThe management of prosthetic joint infection is complex and there is a lack of standardisation of approaches. We evaluated the role of plain film radiography in predicting prosthesis failure after the first stage of a two-stage revision procedure in a retrospective case–control study.MethodsPlain films for 41 patients aged 46 to 87 years (mean 69) were assessed by two musculoskeletal specialist radiologists for seven features (retained or new metalwork, retained cement or restrictor, new fracture, local antimicrobial delivery system and drain) we hypothesised may predict for failure. Inter-observer agreement was assessed by Kappa score and logistic regression analysis was performed to evaluate the relationship of the seven radiological features adjusting for patient age, gender and number of previous revisions.ResultsThere was substantial inter-observer agreement, with a Kappa score of 0.73 (95% CI 0.72-0.74) for all data points collected. Concordance was 100% for evaluating the presence or absence of an antimicrobial delivery system or drain, with lower consensus for evaluating cement (Kappa 0.60, 95% CI 0.35-0.84) and fractures (Kappa 0.59, 95% CI 0.31-0.87). None of the variables’ conditions significantly predicted failure.ConclusionsOur findings support the opinion that surgical expertise which maximizes removal of foreign material is sufficient in conjunction with antibiotic therapy.Electronic supplementary materialThe online version of this article (doi:10.1186/1471-2474-15-300) contains supplementary material, which is available to authorized users.

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Total Hip Replacement

Cited by 119 publications

References 0 publications

Dynamic Analysis and Trajectory Tracking Control for a Parallel Manipulator with Joint Friction

Dynamic Analysis and Trajectory Tracking Control for a Parallel Manipulator with Joint Friction

Intraprosthetic Dislocation of Dual-Mobility Total Hip Arthroplasty: The Unforeseen Complication

Radiological features do not predict failure of two-stage arthroplasty for prosthetic joint infection: a retrospective case–control study

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