Ten-Year Follow-Up of Müller Hip Replacements

Reikerås, Olav

doi:10.3109/17453678208992849

Cited by 19 publications

(6 citation statements)

References 15 publications

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“…Twenty of 22 patients became free from pain at rest, and the average degree of pain at the follow‐up was 5.4 points. Others have reported similar average values of 5.4 and 5.5 points 10,11 . In the present series the hip mobility remained unchanged, and the walking ability improved to an average grading of 3.7 points.…”

Section: Discussionsupporting

confidence: 77%

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Total Hip Replacement in Patients Aged 80 Years and Older

Petersen¹,

Solgaard²,

Simonsen³

1989

J American Geriatrics Society

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Total hip replacement was performed in 27 patients aged 80 years and older. In the early postoperative period, medical complications occurred in 13 patients and arthroplasty-related complications in 5 patients. At the time of the follow-up, after an average of 31 months, there was one case of acetabular cup loosening, which was revised. Twenty of 22 patients were free from pain at rest, and the social function of the patients had remained almost unchanged.

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Section: Discussionsupporting

confidence: 77%

“…In previous reports on THR, the mean age of the patients has been 60–66 years 2,9–12 . Medical complications have been reported in 25% 9 to 41% 12 of the patients.…”

Section: Discussionmentioning

confidence: 99%

Total Hip Replacement in Patients Aged 80 Years and Older

Petersen¹,

Solgaard²,

Simonsen³

1989

J American Geriatrics Society

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“…Radiological loosening of the curved stem was lower than previously reported for this prosthesis [5,7,23,25,33]. The reasons for this difference can only be technical improvement with cement pressurization and increasing experience with joint implantation.…”

Section: Discussionmentioning

confidence: 59%

“…However, it has been shown that stress shielding has to be near perfect to operate [26]. However, some authors have failed to find an association between calcar resorption and loosening of the prosthesis [25,32]. However, some authors have failed to find an association between calcar resorption and loosening of the prosthesis [25,32].…”

Section: Discussionmentioning

confidence: 99%

“…Between 1977 and 1982, 545 primary total hip replacements were carried out in 518 patients at our institution using the Mfiller stem, [23] 1981 Miiller curved 150 5-10 9 40 Salvati et al [27] 1981 Charnley 100 > 10 2 a 41 a Reikeras [25] 1982 Miiller curved 138 9-12 18 33 Sutherland et al [33] 1982 Miiller curved 100 > 10 25 34 a Stauffer [32] 1982 Charnley 300 > 10 6 a 30 Wroblewski [35] 1986 These various prostheses are shown in Fig. 1.…”

Section: Methodsmentioning

confidence: 99%

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Comparison between straight- and curved-stem M�ller femoral prostheses

Wilson-MacDonald

Morscher

1989

Arch Orthop Trauma Surg

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Between 1977 and 1982, 545 cemented femoral prostheses were implanted, in combination with a noncoated cementless polyethylene acetabular component (RM cup). Three hundred and eighty-one straight-stem and 76 curved-stem Müller femoral components were implanted, as well as 88 collared components with a 130-mm stem and a 130 degrees neck-shaft angle, derived from a long-stem steel prosthesis. Survivorship analysis of revisions for aseptic loosening at 10 years revealed 97% straight-stem survival, 91.6% curved-stem survival, and 88.3% 130 degrees stem survival. "Survival" curves were also constructed for radiological loosening, and the survival rates (patients without radiological evidence of loosening) were 69.8%, 78.8%, and 63.1% respectively at 10 years. The 130 degrees collared stem was associated with significantly less acetabular loosening than the other prostheses. This resulted in less calcar resorption, but there was a higher rate of stem loosening. Acetabular loosening and associated wear products appear to be responsible for calcar resorption, and stress shielding of the calcar appears to be of minor importance in the pathogenesis of aseptic stem loosening. Better cementing techniques have improved survivorship of the curved-stem prosthesis, and early fears of high rates of radiological loosening with the straight stem have not been substantiated.

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Total hip replacement with M�ller Pprosthesis and ICLH double cup

Reigstad¹,

Brandt²,

Hetland³

1986

Arch. Orth. Traum. Surg.

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A prospective comparative study was made of patients in the age-group 60-79 years with osteoarthritis of the hip treated with the Müller total hip prosthesis (n = 155) and the ICLH double-cup prosthesis (n = 149). The patients were comparable with regard to sex, mean age, and body weight, and the preoperative radiographic appearance of the hips was th same in the two groups. The mean operating time was significantly shorter in the Müller group, whereas the operative blood loss and the operative complications were statistically equal. No deep infections occurred in either group. The incidence of systemic complications was low and no difference between the two groups was seen. The patients are followed up for an average of 48.5 months (range: 27-75 months). Dramatic improvement in hip function was seen postoperatively in both prosthetic groups. The Müller group had more favorable ratings than the ICLH group for pain, walking ability, hip motion, and total hip score at all follow-ups, from 3 weeks to 5 years after the operation. However, the differences were rather small and did not reach a significant level at any registration. The acetabular radiolucent zones and heterotopic bone formation were statistically equal in the two groups. No revision operations have been done in the Müller group. Two Müller prostheses have shown radiographic signs of mechanical loosening. Thirteen ICLH prostheses (8.7%)--all in female patients--have been reoperated (P less than 0.001), 12 owing to mechanical loosening and one because of pain and stiffness.(ABSTRACT TRUNCATED AT 250 WORDS)

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Ten-Year Follow-Up of Müller Hip Replacements

Cited by 19 publications

References 15 publications

Total Hip Replacement in Patients Aged 80 Years and Older

Total Hip Replacement in Patients Aged 80 Years and Older

Comparison between straight- and curved-stem M�ller femoral prostheses

Total hip replacement with M�ller Pprosthesis and ICLH double cup

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