Die zementfreie modulare MRP-Hüftrevisionsschaftendoprothese im „klinischen Follow-up”

Mumme, T.; Müller-Rath, R.; Weißkopf, M.; Andereya, S.; Neuss, M.; Wirtz, D. C.

doi:10.1055/s-2004-822795

Cited by 14 publications

(14 citation statements)

References 11 publications

(11 reference statements)

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“…The probability of survival according to Kaplan-Meier for the MRP-TITAN stem came to 97% (standard deviation ± 7%) after 9 years. There was no evidence of osteolysis arising from abrasion or proximal osteopenia resulting from insufficient loading in any patient [10].…”

Section: Figures 15a To 15cmentioning

confidence: 80%

“…Die Überlebenswahrscheinlichkeit nach Kaplan-Meier für den MRP-TITAN-Schaft lag bei 97% (Standardabweichung ± 7%) nach 9 Jahren. Auf Reibverschleiß basierende Osteolysen sowie eine proximale Osteopenie infolge knöcherner Minderbelastung waren bei keinem Patienten nachweisbar [10]. periprosthetic fracture (supracondylar femoral fracture after falling off a bicycle), internal fixation was performed without replacement of the in situ stable MRP revision stem.…”

Section: Figures 15a To 15cunclassified

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Zementfreier Femurschaftwechsel mit der Modularen Revisions Prothese MRP-TITAN-Revisionsschaft

Mumme

Müller-Rath²,

Andereya³

et al. 2007

Orthop Traumatol

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45 patients (n = 48 prostheses) with an average age of 67.2 years (min.-max. 42.4-87.4 years) were investigated. The average implantation time of the Modular Revision Prosthesis MRP-TITAN revision stem was 4.7 years (min.-max. 1.0-9.0 years). The Harris Hip Score for Paprosky bone defect types I-III had increased from 25.6 preoperatively to 71.4 postoperatively at the time of the final follow-up (< or = 0.05). Extensively defective bone was diagnosed preoperatively in 32 patients (> or = Paprosky IIB). Plain radiographs showed stable anchorage without migration in 44 patients. In one case, the stem (implantation time 2.36 years) was replaced due to increasing axial subsidence (> or = 5 mm). Good integration of bone graft with subsequent defect regeneration was seen in all patients with bone transplant (n = 30). Postoperative dislocation occurred in six patients and required closed reduction in four cases. Open reduction was performed in two patients, whereby the external rotation angle of the prosthetic neck was corrected without dismantling the distally anchored prosthetic stem components. The mechanical failure rate over the follow-up period of 9 years was one out of the 48 prospectively investigated prostheses. Rate of survival according to Kaplan-Meier was 97%.

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Section: Figures 15a To 15cmentioning

confidence: 80%

Section: Figures 15a To 15cunclassified

Zementfreier Femurschaftwechsel mit der Modularen Revisions Prothese MRP-TITAN-Revisionsschaft

Mumme

Müller-Rath²,

Andereya³

et al. 2007

Orthop Traumatol

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“…In complex revision surgery the advantages of stem modularity are the greater variability for restoration of the leg length, femoral offset, femoral anteversion and soft tissue tension [2,3]. The proper reconstruction of the anatomic centre of rotation and press-fit bone fixation of the revision stem are essential for long-term outcome [4].…”

Section: Introductionmentioning

confidence: 99%

“…1) has excellent short-and longterm results in a number of studies, with low mechanical failure rates and high overall survival rates. Most of the reports with higher patient numbers are multicentre-designed, have different exclusion criteria and use different stem lengths with or without additional distal fixation [3,5,6]. Because of these shortcomings, we investigated the clinical and radiological outcomes, of femoral revision arthroplasty with the 200-mm curved MRP-TITAN stem in a retrospective, monocentric and consecutive study.…”

Section: Introductionmentioning

confidence: 99%

Outcome of a modular tapered uncemented titanium femoral stem in revision hip arthroplasty

Hoberg

Konrads

Engelien

et al. 2015

International Orthopaedics (SICOT)

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“…The probability of survival according to KaplanMeier for the MRP-TITAN stem came to 97% (standard deviation ± 7%) after 9 years. There was no evidence of osteolysis arising from abrasion or proximal osteopenia resulting from insufficient loading in any patient [15].…”

Section: Resultsmentioning

confidence: 80%

Uncemented femoral revision arthroplasty using the modular revision prosthesis MRP-TITAN revision stem

et al. 2008

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Objective: Restoration of a painless hip joint capable of bearing weight by uncemented implantation of a rotationally stable, modular revision stem anchored in the diaphysis.Indications: Prosthetic stem loosening with osteolytic bone defects (defect classification types I-III according to Paprosky), material failure with broken prosthesis, suband/or periprosthetic femoral fractures, and tumors.Contraindication: Extensive osteolysis preventing diaphyseal anchorage of the prosthetic stem.Surgical technique: Transgluteal approach to the hip joint. Removal of the loose prosthetic stem and, if cemented, the bone cement as well. Excision of intramedullary granulation tissue. Reaming of the medullary cavity with flexible reaming shafts and formfit, uncemented implantation of the star-shaped modular revision stem with diaphyseal press-fit. If there is extensive loss of metaphyseal bone stock, augmentation with autogenous-allogenic bone should be performed.Postoperative management: Mobilization on two underarm crutches from the 1st postoperative day. Removal of the Redon drains after 48 hours. Partial loading with 20 kg for 6 weeks postoperatively. If plain radiographs show unchanged seating of the prosthesis after 6 weeks, loading can be increased by 10 kg per week until full weight bearing is achieved; thrombosis prophylaxis is continued throughout. Radiologic checkups will be done after 3, 6, and 12 months. After that, the patient should be checked annually.Results: Forty-five patients (N = 48 prostheses) with an average age of 67.2 years (min/max: 42.4-87.4 years) were investigated. The average implantation time of the Modular revision prosthesis MRP-TITAN revision stem was 4.7 years (min/max: 1.0-9.0 years). The Harris hip score for Paprosky bone defect types I-III had increased from 25.6 preoperatively to 71.4 postoperatively at the time of the final follow-up (p 3 0.05). Extensively defective bone was diagnosed preoperatively in 32 patients ( 1 Paprosky IIB). Plain radiographs showed stable anchorage without migration in 44 patients. In one case, the stem (implantation time 2.36 years) was replaced due to increasing axial subsidence ( 1 5 mm). Good integration of bone graft with subsequent defect regeneration was seen in all patients with bone transplant (N = 30). Postoperative dislocation occurred in six patients and required closed reduction in four cases. Open reduction was performed in two patients, whereby the external rotation angle of the prosthetic neck was corrected without dismantling the distally anchored prosthetic stem components. The mechanical failure rate over the follow-up period of 9 years was 1 out of the 48 prospectively investigated prostheses. The rate of survival according to Kaplan-Meier was 97%.

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Die zementfreie modulare MRP-Hüftrevisionsschaftendoprothese im „klinischen Follow-up”

Abstract: The "MRP-TITANIUM modular revision prostheses" has proved to be reliable in cases of revision surgery with extensive bony defects. The failure rate was 2.1 % for 48 prospectively examined prostheses.

Cited by 14 publications

References 11 publications

Zementfreier Femurschaftwechsel mit der Modularen Revisions Prothese MRP-TITAN-Revisionsschaft

Zementfreier Femurschaftwechsel mit der Modularen Revisions Prothese MRP-TITAN-Revisionsschaft

Outcome of a modular tapered uncemented titanium femoral stem in revision hip arthroplasty

Uncemented femoral revision arthroplasty using the modular revision prosthesis MRP-TITAN revision stem

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