Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2021 Aug 31:35:100526.
doi: 10.1016/j.tcr.2021.100526. eCollection 2021 Oct.

Technical note on the removal of a "cold-welded" lag screw from a Trigen Meta-Tan nail

Yohei Yanagisawa  1   2 , Yusuke Eda  2 , Masashi Yamazaki  2
Affiliations
Case Reports

Technical note on the removal of a "cold-welded" lag screw from a Trigen Meta-Tan nail

Yohei Yanagisawa et al. Trauma Case Rep. .

Erratum in

Abstract

Intramedullary or cephalomedullary nail removal often is performed during nonunion reoperations. We have experienced a rare case in which it was difficult to remove the lag screw of the antegrade intramedullary nail, requiring a large amount of force to be applied over a long period. Removal of the lag screw is essential for removal of the nail and subsequent revision surgery. In our case, the lag screw could be removed only by cutting the screw with a carbide drill. For cases in which the nail and lag screw are firmly fixed, surgeons should prepare for the possibility of their separation using a carbide drill. Written informed consent was obtained from the patient for publication of this case report and accompanying images.

Keywords: Atypical femoral fracture; Carbide drill; Cold-welded screw; Lag screw; Subtrochanteric femoral fracture.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
AP and lateral X-ray of the left femur.
Fig. 2
Fig. 2
AP X-ray of the pelvis and proximal femur.
Fig. 3
Fig. 3
AP and lateral X-ray of the left femur just after the first operation.
Fig. 4
Fig. 4
AP and lateral X-ray of the left femur just before the second operation.
Fig. 5
Fig. 5
Cutting the circumference of the nail around the lag screw insertion part using a carbide drill.
Fig. 6
Fig. 6
Intraoperative view of her left proximal femur after the lag screw broken.
Fig. 7
Fig. 7
AP and lateral X-ray of the left femur just after the second operation.
Fig. 8
Fig. 8
Combo-type screw hole of a removal proximal lag screw (the another case).
See this image and copyright information in PMC

References

    1. Nishino T., Hyodo K., Matsumoto Y. Surgical results of atypical femoral fractures in long-term bisphosphonate and glucocorticoid users–relationship between fracture reduction and bone union. J. Orthop. 2019;19:143–149. - PMC - PubMed
    1. Sancineto C.F., Rubel I.F., Seligson D., Ferro G.V. Technique for removal of broken interlocking screws. J. Orthop. Trauma. 2001;15:132–134. - PubMed
    1. Hak D.J., McElvany M. Removal of broken hardware. J. Am. Acad. Orthop. Surg. 2008;16:113–120. - PubMed
    1. Tantigate D., Riansuwan K., Mahaisavariya B., Sukjaitham K. Breakage of a lag screw of cephalomedullary nail: a technique of removal. CiOS Clin. Orthop. Surg. 2015;7:261–263. - PMC - PubMed
    1. Zheng X.L., Park Y.C., Kim S., An H., Yang K.H. Removal of a broken trigen intertan intertrochanteric antegrade nail. Injury. 2017;48:557–559. - PubMed

Publication types

LinkOut - more resources