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Patient Education – Anterior Approach THA - …

The first very successful hip prosthesis was designed and implanted in the 1960s by John Charnley of England. Charnley’s design used a one piece metal stem with a 22 millimeter diameter head which was cemented into the proximal femur. The acetabular component was made entirely of polyethylene and cemented into the acetabulum. Follow-up studies of the Charnley prosthesis and other similar cemented designs have shown sufficient longevity indicating that the majority of prostheses in surviving patients are still functioning 20 years after implantation. Despite the great success of these hip prostheses, it is recognized that the failure rate increases over time. The mode of failure is typically a loosening of the secure bond between the prosthesis and the bone as well as bone loss associated with this process.

Charnley cemented hip prosthesis; Charnley centering drill; Charnley compression arthrodesis;

Because of the recognized limits to longevity of these early designs, there has been continued work to improve the design and thereby longevity of hip prostheses. Currently the FDA (the federal agency regulating hip prostheses) has on file about 750 approved designs for hip prostheses. The majority of new designs, however, have proven to be inferior to Charnley’s Hip. A few designs however, have probably improved longevity with observed 70% prosthesis survivorship after 20 years.

Total Hip Replacement via Anterior Approach | Hip …

total hip arthroplasty with insertion of a Charnley prosthesis to form a low friction joint

This is another approach to the hip joint that was being utilised prior to hip replacement for drainage of infected hips and for non prosthetic treatements for hip arthritis. However when Mr John Charnley introduced hip replacements in England, the two Judet surgeons were also performing their own hip replacements via an anterior approach. The French prosthesis had a high failure rate, and the approach along with the prosthesis did not become popularized. However a few surgeons around the world peristed with the approach using the modern low friction hip replacement.

Antibiotic-loaded cement spacers are an efficient method in the treatment of hip joint infections. However, during treatment several complications might occur that might endanger the infection eradication as well as the functional outcome after prosthesis reimplantation. Our data demonstrate that > 50 % of patients suffering from hip joint infections and treated with a two-stage protocol will have some kind of complications besides reinfection or infection persistence, mostly consisting of mechanical ones (spacer fracture, -dislocation, femoral fracture, prosthesis dislocations), systemic side effects (acute renal failure, allergic reactions), and general complications (draining sinus, pneumonia, etc.). Despite the retrospective design of our study and the limited possibility of interpreting these findings and their causes, this rate indicates that these patients are prone to have some kind of complication. Orthopedic surgeons should be aware of these complications and their treatment options and concentrate on the early diagnosis for prevention of further complications. Between stages, an interdisciplinary cooperation with other facilities (internal medicine, microbiologists) should be aimed for patients with several comorbidities for optimizing their general medical condition.

Total Hip Arthroplasty 27130 M16.10 | eORIF

when British physician Sir John Charnley was presented with a patient whose ..

All patients' records that have been treated by hip spacer implantation in our institution between 01.01.1999 and 30.06.2008 have been retrospectively evaluated regarding following parameters: primary surgical indication, causative pathogen organism, time between infection manifestation and spacer implantation, duration of spacer implantation, spacer articulation, impregnation of bone cement, systemic antibiotics, and implant type at reimplantation. Moreover, mechanical complications (spacer dislocation, spacer fracture, femoral fracture, prosthesis dislocation after reimplantation) and systemic side effects (renal and hepatic failure, respectively, allergic reactions, ototoxicity) as well as general postoperative complications were also documented. Only patients with a sufficient documentation regarding all above mentioned parameters were included in the study.

Hence, the aim of the present retrospective study was to register and define complications after hip spacer implantation and prosthesis reimplantation, respectively, in the treatment of late hip joint infections. Specific attention was paid to the aforementioned mechanical complications, systemic side effects as well as general complications.

Set in Sir John Charnley's biomechanics laboratory at Wrightington Hospital, ..
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THA Revision - Recon - Orthobullets

The first was devised in 1962 by Sir John Charnley of England. The first FDA-approved total hip replacement was implanted in 1969. was one of the most important orthopedic surgical advances of the 20th century. Every year in the United States alone, more than 285,000 hip replacements are performed, and the number is expected to double to about 573,000 by the year 2030, according to the March 6, 2008 issue of .

Hip Replacement Surgery - Hugh Blackley

Total hip joint replacement is one of the great orthopaedic surgical advances of this century. It resulted from the pioneering efforts of Sir John Charnley, an orthopaedic surgeon who worked with engineers to develop the techniques and materials used in hip joint replacement.

Nowadays hip replacement surgery has become a commonplace procedure

A persistent squeak led to the development of one of the most important medical technologies of the 1900s. In the early 1950s, John Charnley, an surgeon from Manchester, examined a patient who had been fitted with a replacement hip made from acrylic plastic. The acrylic hip squeaked so loudly that the man's wife would avoid being in the same room with him if at all possible.

Complications after spacer implantation in the …

Charnley spent many hours in the laboratory trying to reduce the friction between the hip replacement and the hip joint. After several failures he designed a two-component hip replacement made of metal and plastic. The metal part, or femoral component, was placed in the femur, which was hollowed out during surgery. The plastic part, called the acetabular cup, was cemented into the pelvis. The two parts combined to make a similar joint to a natural one. Charnley's prosthesis was copied and forms the basis of many modern designs, which is why he has earned a reputation as the ‘father of hip replacement’.

Complications of THR - Hips and Knees Surgeon Los …

Although hip spacers are established as an adequate treatment option in the management of these infections, several complications might occur between stages and, hence, endanger the functional outcome. Besides a reinfection and/or infection persistence, mechanical complications, such as spacer fracture, spacer dislocation, and femoral fracture, or systemic side effects (renal or hepatic failure, allergic reactions) might lead to prolonged treatment courses between stages. These complications are certainly rare and the exact incidence of the above mentioned complications, respectively, is still unknown. Moreover, it is unclear whether a higher incidence of complications between stages might be associated with a higher incidence of mechanical complications after the prosthesis reimplantation at the site of a hip spacer implantation.

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