Details
| Original language | English |
|---|---|
| Pages (from-to) | 1461-1466 |
| Number of pages | 6 |
| Journal | International orthopaedics |
| Volume | 35 |
| Issue number | 10 |
| Publication status | Published - Oct 2011 |
Abstract
The osteonecrosis of the femoral head implies significant disability partly due to pain. After conventional core decompression using a 10-mm drill, patients normally are requested to be non-weight bearing for several weeks due to the risk of fracture. After core decompression using multiple small drillings, patients were allowed 50% weight bearing. The alternative of simultaneous implantation of a tantalum implant has the supposed advantage of unrestricted load bearing postoperatively. However, these recommendations are mainly based on clinical experience. The aim of this study was to perform a finite element analysis and confirm the results by clinical data after core decompression and after treatment using a tantalum implant. Postoperatively, the risk of fracture is lower after core decompression using multiple small drillings and after the implantation of a tantalum rod according to finite element analysis compared to core decompression of one 10-mm drill hole. According to the results of this study, a risk of fracture exists only during extreme loading. The long-term results reveal a superior performance for core decompression presumably due to the lack of complete bone ingrowth of the tantalum implant. In conclusion, core decompression using small drill holes seems to be superior compared to the tantalum implant and to conventional core decompression.
ASJC Scopus subject areas
- Medicine(all)
- Surgery
- Medicine(all)
- Orthopedics and Sports Medicine
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In: International orthopaedics, Vol. 35, No. 10, 10.2011, p. 1461-1466.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Core decompression and osteonecrosis intervention rod in osteonecrosis of the femoral head
T2 - Clinical outcome and finite element analysis
AU - Floerkemeier, Thilo
AU - Lutz, André
AU - Nackenhorst, Udo
AU - Thorey, Fritz
AU - Waizy, Hazibullah
AU - Windhagen, Henning
AU - Von Lewinski, Gabriela
PY - 2011/10
Y1 - 2011/10
N2 - The osteonecrosis of the femoral head implies significant disability partly due to pain. After conventional core decompression using a 10-mm drill, patients normally are requested to be non-weight bearing for several weeks due to the risk of fracture. After core decompression using multiple small drillings, patients were allowed 50% weight bearing. The alternative of simultaneous implantation of a tantalum implant has the supposed advantage of unrestricted load bearing postoperatively. However, these recommendations are mainly based on clinical experience. The aim of this study was to perform a finite element analysis and confirm the results by clinical data after core decompression and after treatment using a tantalum implant. Postoperatively, the risk of fracture is lower after core decompression using multiple small drillings and after the implantation of a tantalum rod according to finite element analysis compared to core decompression of one 10-mm drill hole. According to the results of this study, a risk of fracture exists only during extreme loading. The long-term results reveal a superior performance for core decompression presumably due to the lack of complete bone ingrowth of the tantalum implant. In conclusion, core decompression using small drill holes seems to be superior compared to the tantalum implant and to conventional core decompression.
AB - The osteonecrosis of the femoral head implies significant disability partly due to pain. After conventional core decompression using a 10-mm drill, patients normally are requested to be non-weight bearing for several weeks due to the risk of fracture. After core decompression using multiple small drillings, patients were allowed 50% weight bearing. The alternative of simultaneous implantation of a tantalum implant has the supposed advantage of unrestricted load bearing postoperatively. However, these recommendations are mainly based on clinical experience. The aim of this study was to perform a finite element analysis and confirm the results by clinical data after core decompression and after treatment using a tantalum implant. Postoperatively, the risk of fracture is lower after core decompression using multiple small drillings and after the implantation of a tantalum rod according to finite element analysis compared to core decompression of one 10-mm drill hole. According to the results of this study, a risk of fracture exists only during extreme loading. The long-term results reveal a superior performance for core decompression presumably due to the lack of complete bone ingrowth of the tantalum implant. In conclusion, core decompression using small drill holes seems to be superior compared to the tantalum implant and to conventional core decompression.
UR - http://www.scopus.com/inward/record.url?scp=80755125617&partnerID=8YFLogxK
U2 - 10.1007/s00264-010-1138-x
DO - 10.1007/s00264-010-1138-x
M3 - Article
C2 - 20972787
AN - SCOPUS:80755125617
VL - 35
SP - 1461
EP - 1466
JO - International orthopaedics
JF - International orthopaedics
SN - 0341-2695
IS - 10
ER -