Abstract
Purpose
Peri-prosthetic fractures (PPF) have been showing a constant increase. The typical patient described in the SOFCOT symposium in 2005 with PPF was an elderly 77-year-old woman with hip athroplasty (HA). The purpose of this study was to actualize the characteristics of this population. Our hypothesis is that patient type remains a female, but much older, with an equal distribution between HA and knee arthroplasty (KA).
Methods
All cases of PPF were retrospectively gathered during an 18 month period. Besides regular epidemiologic data, we noted autonomy level (Parker, Devane), residence and dependence (Katz), the type of implant, of fracture, the severity of fracture, the onset and the state of solidity of the prosthesis.
Results
The series consisted of 81 patients ( 58 F, 23 M) ( 81 fractures), mean age of 82.2 years; 3.5 % of them were admits from the emergency admits; and 69.1 % lived at home. Parker’s mean score was 4.6, Devane’s mean score was 1.8 and Katz’s mean score was 4.2. There were totals of 46 HA fractures and 39 total knee arthroplasty (TKA) of which four were inter-prosthetic and three were either KA or proximal osteosynthesis. Onset before fracture for HA was 12.1 years, 7.9 years for KA, and 10.2 years for all series. Patients were younger for HA (80.8 years) than for KA (84.1 years). The fracture was mostly noticed in the third proximal (49.4 %), spiral segment (44.5 %) and around the implant, while 34.8 % of loosening was observed for HA versus 7.7 % for KA.
Discussion-conclusion
The patient type has evolved confirming our hypothesis: they are always a female more than 82 years old with a number of fractures on KA similar to that of HA. The patients lived at home, had some autonomy, were somewhat independent in their daily activities but sedentary. Fractures were mostly on the third proximal femur, spiral segment and around the implant. PPF remains rare and a theoretical increase is yet to be confirmed.
Level of evidence : prospective study type IV, cohort study
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Acknowledgment
The authors thank Dr Rommel Asagwara, MD, for his excellent contribution to the translation of the manuscript.
Conflict of interest
ME, DB, MR, PA, FB : none for this study
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Ehlinger, M., Bahlau, D., Rahme, M. et al. Has a patient type with peri-prosthetic femoral fractures evolved?. International Orthopaedics (SICOT) 39, 1833–1838 (2015). https://doi.org/10.1007/s00264-015-2873-9
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DOI: https://doi.org/10.1007/s00264-015-2873-9