Abstract
Purpose
Postoperative over-telescoping (OT) with lag screws is often observed in reverse oblique intertrochanteric fractures. This study aimed to clarify the risk factors of OT in patients with reverse oblique intertrochanteric fractures.
Methods
Electronic medical records of patients diagnosed with reverse oblique intertrochanteric fractures using plain radiography who underwent operative fixation with an intramedullary nail between August 2013 and December 2019 were reviewed. Patients were classified into two groups according to the Futamura classification: lateral wall pattern (LW) and reverse oblique pattern (RO). The incidence of OT in the LW and RO groups was compared. Also, we compared the incidence of OT for each reduction type in the LW group.
Results
Twenty patients had LW, and nine had RO. OT was observed in eight fractures (42.1%) in the LW group but not in the RO group. The incidence of OT was significantly higher in the LW group than in the RO group (P = 0.0261). Among the 19 fractures with LW, OT was observed in 7 of 10 and 1 of 9 fractures with postoperative reduction in the intramedullary and extramedullary or anatomical types, respectively. In the LW group, the incidence of OT was significantly higher in fractures with postoperative reduction in the intramedullary type than in those of the extramedullary or anatomical type (P = 0.0198).
Conclusion
Our study showed that the incidence of OT was significantly higher in LW than in RO and that postoperative reduction in the intramedullary type in LW was a risk factor for OT.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by YI, YT. The first draft of the manuscript was written by YI and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This study received ethical approval from The TOKUSHUKAI GROUP COMMMITE under the protocol number TGE01521-024.
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Izawa, Y., Futamura, K., Murakami, H. et al. Risk factors for over-telescoping in reverse oblique intertrochanteric fractures. Eur J Orthop Surg Traumatol 33, 1101–1107 (2023). https://doi.org/10.1007/s00590-022-03263-6
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DOI: https://doi.org/10.1007/s00590-022-03263-6