Strength testing of pins made of human femur cortical bone
For biomechanical evaluation of cortical bone as a potential source for internal fixation devices, pins of 2 and 3 mm in diameter were made from fresh human femora and subjected to bending loads. Some of the pins were tested without further treatment; others were defatted and dried in acetone solution. Of the acetone-treated pins, some were autoclaved either at 121 degrees C for 20 min or at 134 degrees C for 8 min. Acetone treatment of the pins caused a 5.5% increase in bending strength (p < or = 0.05) and a 6.6% increase in the elastic modulus (p < or = 0.05). The mean bending strength of the acetone-treated pins was 257 +/- 52 N/mm2 and the mean elastic modulus was 18,346 +/- 1292 N/mm2. Autoclaving of the pins at the lower temperature for a longer time led to a decrease in the bending strength of up to 16% and at the higher temperature for a shorter time to a decrease of up to 41%. To compare the strengths of the cortical and synthetic pins, 2-mm Biofix pins were also tested. The Biofix pins showed a 25% higher bending strength than the acetone-treated pins but a 12.5% lower elastic modulus. It should be noted that in animal studies the synthetic Biofix pins showed a 20% loss of strength within 2 days after implantation in situ.
| Medienart: |
Artikel |
|---|
| Erscheinungsjahr: |
2001 |
|---|---|
| Erschienen: |
2001 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:104 |
|---|---|
| Enthalten in: |
Der Unfallchirurg - 104(2001), 1 vom: 18. Jan., Seite 64-8 |
| Sprache: |
Deutsch |
|---|
| Weiterer Titel: |
Festigkeitsuntersuchungen an Pins aus humaner Femurkortikalis |
|---|
| Beteiligte Personen: |
Berns, T [VerfasserIn] |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Completed 02.08.2001 Date Revised 25.10.2019 published: Print Citation Status MEDLINE |
|---|
| Förderinstitution / Projekttitel: |
|
|---|
| PPN (Katalog-ID): |
NLM112869904 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM112869904 | ||
| 003 | DE-627 | ||
| 005 | 20231222162651.0 | ||
| 007 | tu | ||
| 008 | 231222s2001 xx ||||| 00| ||ger c | ||
| 028 | 5 | 2 | |a pubmed24n0377.xml |
| 035 | |a (DE-627)NLM112869904 | ||
| 035 | |a (NLM)11381764 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a ger | ||
| 100 | 1 | |a Berns, T |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Strength testing of pins made of human femur cortical bone |
| 246 | 3 | 3 | |a Festigkeitsuntersuchungen an Pins aus humaner Femurkortikalis |
| 264 | 1 | |c 2001 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
| 338 | |a Band |b nc |2 rdacarrier | ||
| 500 | |a Date Completed 02.08.2001 | ||
| 500 | |a Date Revised 25.10.2019 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a For biomechanical evaluation of cortical bone as a potential source for internal fixation devices, pins of 2 and 3 mm in diameter were made from fresh human femora and subjected to bending loads. Some of the pins were tested without further treatment; others were defatted and dried in acetone solution. Of the acetone-treated pins, some were autoclaved either at 121 degrees C for 20 min or at 134 degrees C for 8 min. Acetone treatment of the pins caused a 5.5% increase in bending strength (p < or = 0.05) and a 6.6% increase in the elastic modulus (p < or = 0.05). The mean bending strength of the acetone-treated pins was 257 +/- 52 N/mm2 and the mean elastic modulus was 18,346 +/- 1292 N/mm2. Autoclaving of the pins at the lower temperature for a longer time led to a decrease in the bending strength of up to 16% and at the higher temperature for a shorter time to a decrease of up to 41%. To compare the strengths of the cortical and synthetic pins, 2-mm Biofix pins were also tested. The Biofix pins showed a 25% higher bending strength than the acetone-treated pins but a 12.5% lower elastic modulus. It should be noted that in animal studies the synthetic Biofix pins showed a 20% loss of strength within 2 days after implantation in situ | ||
| 650 | 4 | |a Comparative Study | |
| 650 | 4 | |a English Abstract | |
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Hofmann, C |e verfasserin |4 aut | |
| 700 | 1 | |a Gotzen, L |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Der Unfallchirurg |d 1993 |g 104(2001), 1 vom: 18. Jan., Seite 64-8 |w (DE-627)NLM012685666 |x 1433-044X |7 nnns |
| 773 | 1 | 8 | |g volume:104 |g year:2001 |g number:1 |g day:18 |g month:01 |g pages:64-8 |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 104 |j 2001 |e 1 |b 18 |c 01 |h 64-8 | ||