Treatment of periprosthetic femur fractures with the non-contact bridging plate: a new angular stable implant

Treatment of periprosthetic femur fractures with the non-contact bridging plate: a new angular stable implant

Objectives We report the application of a new fixed angle plate (NCB DF ® , Zimmer inc. USA, Warsaw, IN) in the treatment of periprosthetic femur fractures. The NCB DF ® combines conventional plating technique with polyaxial screw placement and angular stability. Design Prospective cohort study. Set...

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Bibliographic Details
Published in:Archives of orthopaedic and trauma surgery 2008-04, Vol.128 (4), p.409-416
Main Authors: Erhardt, J. B., Grob, K., Roderer, G., Hoffmann, A., Forster, T. N., Kuster, M. S.
Format: Article
Language:eng
Subjects:
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip
Arthroplasty, Replacement, Knee
Bone Plates
Equipment Design
Female
Femoral Fractures - surgery
Fracture Fixation, Internal
Fractures
Humans
Male
Medicine
Medicine & Public Health
Orthopedics
Patient satisfaction
Postoperative Complications - surgery
Prospective Studies
Trauma Surgery
Weight-Bearing
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Summary:Objectives We report the application of a new fixed angle plate (NCB DF ® , Zimmer inc. USA, Warsaw, IN) in the treatment of periprosthetic femur fractures. The NCB DF ® combines conventional plating technique with polyaxial screw placement and angular stability. Design Prospective cohort study. Setting A single level-1 trauma center. Patients From May 2003 to December 2005, a total of 24 patients with periprosthetic femur fractures were treated. The NCB DF ® femur plate was used in all cases. The average follow-up period was 12 months (3–31 months). Twelve patients had a periprosthetic fracture after total knee replacement (TKA) and 12 patients after total hip replacement (THA). The mean period from primary joint replacement to periprosthetic fracture was 8.2 years for the THA group and 7.2 years for the TKA group. Intervention A combined conventional/locking surgical technique was performed in all the cases. Main outcome measures Union, non-union, mal-union, duration of surgery, range of motion, postoperative mobility, subjective patient satisfaction and complications. Results The union rate was 90%, the mal-union rate 5% and the re-operation rate 15%. Postoperative mobility reached the preoperative level in all but for two patients. Three complications occurred relating to the implant or the procedure: one fatigue failure of the plate (non-union), one screw breakage, and one wound infection. Conclusions The NCB DF ® combines conventional plating technique with polyaxial screw placement and angular stability. This combination technique shows promising results regarding union and mal-union rates in periprosthetic fractures in elderly and osteoporotic patients.
ISSN:0936-8051
1434-3916