• J Orthop Trauma · Dec 2013

    Comparative Study

    Clinical implication of subgrouping in valgus femoral neck fractures: comparison of 31-B1.1 with 31-B1.2 fractures using the OTA/AO classification.

    • Hyung K Song, Jae J Lee, Hyun C Oh, and Kyu H Yang.
    • *Department of Orthopaedic Surgery, Ajou University School of Medicine, Suwon, Korea; †Department of Orthopaedic Surgery, Yonsei University, Gangnam Severance Hospital, Seoul, Korea; and ‡Department of Orthopaedic Surgery, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea.
    • J Orthop Trauma. 2013 Dec 1; 27 (12): 677-82.

    ObjectivesThis study aimed to identify the clinical implications of valgus-impacted femoral neck fractures and compare fractures with >15-degree angle of impaction (31-B1.1) against fractures with <15-degree angle of impaction (31-B1.2).DesignRetrospective study.Patients/ParticipantsWe enrolled 78 patients with 31-B1 femoral neck fractures who were treated by screw osteosynthesis.Main Outcome MeasurementsWe evaluated the clinical and radiographic outcomes.ResultsThirty-six patients sustained 31-B1.1 fractures, and 42 patients sustained 31-B1.2 fractures. The average follow-up period was 15 months, and bony union occurred in all cases. The mean femur neck shortening was 8.88 mm for B1.1 and 3.70 mm for B1.2 fractures (P < 0.001). The mean sliding distance of the screw was 3.36 mm for B1.1 fractures and 1.38 mm for B1.2 fractures (P < 0.001). The mean Harris hip score was 82.0 for B1.1 and 88.8 for B1.2 fractures (P = 0.029). Avascular necrosis (AVN) of the femoral head occurred in 4 patients with B1.1 fractures, and none with B1.2 fractures (P = 0.041). Eighteen of the 78 patients required a second operation, and 15 of them were included in 31-B1.1 fracture (P = 0.003). Three patients underwent arthroplasty due to AVN, and 15 patients required hardware removal due to pain after bony union.ConclusionsMore femoral neck shortening and less functional recovery should be expected in valgus-impacted femoral neck fracture patients based on the severity of the initial deformity. Even though we obtained bony union in all of the cases, the risk of AVN and second operation after bony union was higher with greater initial deformity.Level Of EvidenceTherapeutic level III.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…