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Torque resistance after fixation of Jones fractures with intramedullary screws.

Publication ,  Journal Article
Horst, F; Gilbert, BJ; Glisson, RR; Nunley, JA
Published in: Foot Ankle Int
December 2004

BACKGROUND: Intramedullary screws frequently are used for fixation of Jones fractures of the fifth metarsal. While the ability of intramedullary screw fixation in fifth metatarsals to resist bending and tensile forces is well known, the ability to withstand torsion has not been studied. This paper compares the torsional stiffness of Jones fractures treated with 6.5-mm short- threaded intramedullary screws to those treated with 5.0-mm cannulated short-threaded intramedullary screws. METHODS: Nine fresh-frozen, matched pairs of cadaver fifth metatarsals had an acute Jones fracture simulated with an osteotomy. They were stabilized with intramedullary screws and then loaded to failure. RESULTS: The torsional stiffness of the metatarsals fixed with the 6.5-mm did not differ significantly from that using 5.0-mm screws. However, to achieve stability, the 5.0-mm screw had to be long enough to reach the metatarsal head and neck. This tended to straighten the normally curved fifth metatarsal bone and caused lateral gapping at the fracture site. CONCLUSION: Both 5.0-mm or 6.5-mm screws provide equal torsional rigidity, but 5.0-mm screws may need to be longer, which could potentially straighten the fifth metatarsal shaft in patients who have a curved fifth metatarsal.

Duke Scholars

Published In

Foot Ankle Int

DOI

ISSN

1071-1007

Publication Date

December 2004

Volume

25

Issue

12

Start / End Page

914 / 919

Location

United States

Related Subject Headings

  • Torque
  • Orthopedics
  • Middle Aged
  • Metatarsal Bones
  • Male
  • Humans
  • Fractures, Bone
  • Fracture Fixation, Intramedullary
  • Female
  • Cadaver
 

Citation

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Horst, F., Gilbert, B. J., Glisson, R. R., & Nunley, J. A. (2004). Torque resistance after fixation of Jones fractures with intramedullary screws. Foot Ankle Int, 25(12), 914–919. https://doi.org/10.1177/107110070402501212
Horst, Frank, Brett J. Gilbert, Richard R. Glisson, and James A. Nunley. “Torque resistance after fixation of Jones fractures with intramedullary screws.Foot Ankle Int 25, no. 12 (December 2004): 914–19. https://doi.org/10.1177/107110070402501212.
Horst F, Gilbert BJ, Glisson RR, Nunley JA. Torque resistance after fixation of Jones fractures with intramedullary screws. Foot Ankle Int. 2004 Dec;25(12):914–9.
Horst, Frank, et al. “Torque resistance after fixation of Jones fractures with intramedullary screws.Foot Ankle Int, vol. 25, no. 12, Dec. 2004, pp. 914–19. Pubmed, doi:10.1177/107110070402501212.
Horst F, Gilbert BJ, Glisson RR, Nunley JA. Torque resistance after fixation of Jones fractures with intramedullary screws. Foot Ankle Int. 2004 Dec;25(12):914–919.
Journal cover image

Published In

Foot Ankle Int

DOI

ISSN

1071-1007

Publication Date

December 2004

Volume

25

Issue

12

Start / End Page

914 / 919

Location

United States

Related Subject Headings

  • Torque
  • Orthopedics
  • Middle Aged
  • Metatarsal Bones
  • Male
  • Humans
  • Fractures, Bone
  • Fracture Fixation, Intramedullary
  • Female
  • Cadaver