- Tytuł:
- A short stem with metaphyseal anchorage reveals a more physiological strain pattern compared to a standard stem : an experimental study in cadavaric bone
- Autorzy:
-
Floerkemeier, Thilo
Weltin, Jennifer
Budde, Stefan
Hurschler, Christof
Windhagen, Henning
Lewinski, Gabriela von
Gronewold, Jens - Powiązania:
- https://bibliotekanauki.pl/articles/306849.pdf
- Data publikacji:
- 2019
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
artroplastyka stawu biodrowego
METHA
badania biomechaniczne
tensometr
wzorzec naprężenia
short stem hip arthroplasty
standard stem hip arthroplasty
biomechanical testing
strain gauges
strain patterns - Opis:
- The proposed advantages of short stem hip arthroplasties are bone preserving strategies and less soft tissue damage. Bone preserving strategies do not only include a more proximal resection of the femoral neck, but especially for short stem hip arthroplasties with predominantly metaphyseal fixation a presumed more physiologic load transfer and thus a reduction of stress-shielding. However, the hypothesized metaphyseal anchorage associated with the aforementioned benefits still needs to be verified. Unfortunately, mid- to long-term clinical studies are missing. Methods: Therefore, the METHA short stem as a short stem with proposed metaphyseal anchorage and the Bicontact® standard stem were tested biomechanically in three pairs of cadaveric femora while strain gauges monitored their corresponding strain patterns. Results: For the METHA stem, the strains in all tested locations including the region of the calcar were similar to conditions of cadaver without implanted stem. The Bicontact stem showed approximately half of strain of the non-implanted cadaveric femura with slightly increasing strain from proximal to distal. Conclusions: Summarizing, the current study revealed primary metaphyseal anchorage of the METHA short stem and a metaphyseal-diaphyseal anchorage of the Bicontact stem.
- Źródło:
-
Acta of Bioengineering and Biomechanics; 2019, 21, 2; 153-159
1509-409X
2450-6303 - Pojawia się w:
- Acta of Bioengineering and Biomechanics
- Dostawca treści:
- Biblioteka Nauki
Artykuł