Effect of K-wire Reuse and Drill Mode on Heat Generation in Bone.
| Autor: | Muriuki MG; Edward Hines, Jr. VA Hospital, Hines, IL, USA., Reddy AK; Loyola University Chicago, Maywood, IL, USA., Tauchen A; Loyola University Chicago, Maywood, IL, USA., Havey RM; Edward Hines, Jr. VA Hospital, Hines, IL, USA., Patwardhan AG; Edward Hines, Jr. VA Hospital, Hines, IL, USA.; Loyola University Chicago, Maywood, IL, USA., Bindra RR; Griffith University and Gold Coast University Hospital, Southport, Queensland, Australia. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Hand (New York, N.Y.) [Hand (N Y)] 2023 Mar; Vol. 18 (2), pp. 314-319. Date of Electronic Publication: 2021 May 14. |
| DOI: | 10.1177/15589447211003172 |
| Abstrakt: | Background: We examined the effect of Kirschner wire (K-wire) reuse and use of oscillating mode on heat generation within cortical bone. Methods: Two trocar-tipped K-wires were drilled through the diaphysis of each of 30 human metacarpals and phalanges: one K-wire was inserted in rotary mode and another in oscillating mode. Each wire was reused once. Thermocouples placed within the dorsal and volar bone adjacent to the K-wire drill path measured temperatures throughout each test. Results: Peak cortex temperatures were 25°C to 164°C. Rotary drilling achieves peak temperatures quicker (31 ± 78 seconds vs 44 ± 78 seconds, P = .19) than oscillating drilling, but insertion time is also less, resulting in lower overall heat exposure. This effect is also seen when the K-wire is reused (34 ± 70 seconds vs 41 ± 85 seconds, P = .4). The length of time that cortical bone was exposed to critical temperatures (47°C or more) was significantly higher when a wire was reused (36 ± 72 seconds vs 43 ± 82 seconds, P = .008). Peak temperatures greater than 70°C (a temperature associated with instantaneous cell death) were observed on many occasions. Conclusions: Overall heat exposure may be higher if a K-wire is reused or inserted in oscillating mode. In the absence of external cooling, K-wire insertion into cortical bone can easily expose bone to temperatures that exceed 70°C and may increase the risk of osteonecrosis. |
| Databáze: | MEDLINE |
| Externí odkaz: |
|