Ergebnisse der totalen H�ftendoprothesen

Patients of the Orthopaedic University Hospital in Frankfurt operated between 1970 and 1977 were examined to control the success of implantations of total hip endoprostheses. Ninety-three percent of totally 1497 implanted hip prostheses are Müller standard type, additionally there have been implanted 44 Weber-Huggler prostheses and 54 special long stem prostheses. During the follow-up period of 10 years 7.4% of the primarily implanted prostheses had to be revised. The reasons for revision were loosening of the stem and/or socket in 56% of the cases, 20% infections, 14% technical errors and in 11% of the cases fractures of the stem occured. Fifty-two percent of the implanted Weber-Huggler prostheses with rotational ball heads made of polyester had to be revised in the meantime, 78% of the cases because of loosening of the prosthetic components. It could be shown that the number of infected cases could be diminished after introduction of an ultraclean air operating box. The change of the cross section of the Müller-type-stem from a round medial wedge to a flat one and the introduction of CoNiCrMo wrought alloy Protasul-10 instead of CoCrMo cast alloy Protasul-2 as stem material in 1973 resulted in a much smaller rate of loosened prostheses without fractures of the forged Protasul-10 stems. During the 6 examined years there has been no fracture of a prosthetic stem made of Protasul-10.

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Clinical experience with mueller total hip endoprostheses of different design and material

Willert

Buchhorn

Zichner

1980

Arch. Orth. Traum. Surg.

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Results of alloarthroplasty of the hip joint

Oberthaler

Bauer

Sattler

1980

Arch. Orth. Traum. Surg.

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We report on the follow-up examination results of 881 operated hip joints which were implanted in the Innsbruck University Clinic for Orthopedics during the period 1968--1975. Due to exact checking 75% of all patients could be clinically control-examined during 1978 and all available information regarding the others was collected. In the patient group with an average age of 62.5 years the course of postoperative mobility over the years was mainly examined. Functional activity, subjective patient opinion, pain, work capability and weather sensitivity were also analyzed. After an implantation period of the hip prosthesis of 3--10 years encouraging results were shown. Aseptic prostheses loosenings (9.8%) were examined with regard to their causes. The infection rate was very low at 0.56% and also periarticular calcification only occurred comparatively seldom (13.5%). Other complications were recorded in 6.8% of the patients. In total, 74% of the operated patients offered a very good or good complete result.

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Ergebnisse der totalen H�ftendoprothesen

Cited by 2 publications

References 8 publications

Clinical experience with mueller total hip endoprostheses of different design and material

Clinical experience with mueller total hip endoprostheses of different design and material

Results of alloarthroplasty of the hip joint

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