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      The Comparison of Dynamic Condylar Screw Plate to Proximal Femoral Nail in Reverse Oblique and Transverse Intertrochanteric Fractures: A Retrospective Study on 61 Patients

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      Publication date (Electronic, pub):
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      Journal: Cureus
      Publisher: Cureus
      Keywords: reverse oblique, intramedullary, fracture fixation, open fracture reduction, hip fractures

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          Abstract

          Objective: Reverse oblique (RO) and transverse intertrochanteric fracture patterns constitute a challenge for the operating surgeon. Currently, no gold standard fixation method exists. This study aimed to retrospectively compare proximal femoral nail (PFN) to dynamic condylar screw (DCS) plating in the treatment of RO and transverse intertrochanteric fractures.

          Methods: A total of 61 patients fixated by PFN or DCS were included. Of these, 36 were treated with PFN (21 females and 15 males; mean age: 65.52 years), and 25 were treated with DCS (12 females and 13 males; mean age: 59.36 years). The mean follow-up time was 33.8 and 42.6 months (range: 24-108). Radiological evaluation included the quality of fracture reduction, neck-shaft angle change, posteromedial support presence, and bone union time. Complications such as mechanical failure, nonunion, and infection were noted.

          Results: The only significant differences between the fixation methods were the superiority of DCS over PFN in earlier fracture union time (mean values: 8.9 versus 14.1 weeks) and the superiority (p=0.007) of PFN in shorter hospital stay (3.4 days versus 5.1 days). No significant difference was observed in radiological parameters. While similar mechanical complication rates were found, a significantly higher nonunion rate was detected with the DCS.

          Conclusion: The most crucial disadvantage of DCS was the high rate of nonunion. Closed fracture reduction in PFN seems to be the most critical parameter to prevent severe complications. The open reduction using DCS showed no advantages over closed reduction and PFN fixation in providing a more anatomical alignment in AO/Orthopaedic Trauma Association (OTA) 31-A3 fractures. However, we recommend PFN application in this type of fracture, since nonunion is more common in DCS.

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          Critical factors in cut-out complication after gamma nail treatment of proximal femoral fractures

          Alicja Bojan, Claudia Beimel, Gilbert Taglang … (2013)
          Background The most common mechanical failure in the internal fixation of trochanteric hip fractures is the cut-out of the sliding screw through the femoral head. Several factors that influence this complication have been suggested, but there is no consensus as to the relative importance of each factor. The purpose of this study was to analyse the cut-out complication with respect to the following variables: patients’ age, fracture type, fracture reduction, implant positioning and implant design. Methods 3066 consecutive patients were treated for trochanteric fractures with Gamma Nails between 1990 and 2002 at the Centre de Traumatologie et de l`Orthopedie (CTO), Strasbourg, France. Cut-out complications were identified by reviewing all available case notes and radiographs. Subsequently, the data were analysed by a single reviewer (AJB) with focus on the studied factors. Results Seventy-one cut-out complications were found (2.3%) of the 3066 trochanteric fractures. Cut-out failure associated with avascular head necrosis, pathologic fracture, deep infection or secondary to prior failure of other implants were excluded from the study (14 cases). The remaining 57 cases (1.85 %, median age 82.6, 79% females) were believed to have a biomechanical explanation for the cut-out failure. 41 patients had a basicervical or complex fracture type. A majority of cut-outs (43 hips, 75%) had a combination of the critical factors studied; non-anatomical reduction, non-optimal lag screw position and the characteristic fracture pattern found. Conclusions The primary cut-out rate of 1.85% was low compared with the literature. A typical cut-out complication in our study is represented by an unstable fracture involving the trochanteric and cervical regions or the combination of both, non-anatomical reduction and non-optimal screw position. Surgeons confronted with proximal femoral fractures should carefully scrutinize preoperative radiographs to assess the primary fracture geometry and fracture classification. To reduce the risk of a cut-out it is important to achieve both anatomical reduction and optimal lag screw position as these are the only two factors that can be controlled by the surgeon.
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            Awareness of tip-apex distance reduces failure of fixation of trochanteric fractures of the hip.

            L. Solberg, M Baumgaertner (1997)
            We compared the results of the surgical treatment of trochanteric hip fractures before and after surgeons had been introduced to the tip-apex distance (TAD) as a method of evaluating screw position. There were 198 fractures evaluated retrospectively and 118 after instruction. The TAD is the sum of the distance from the tip of the screw to the apex of the femoral head on anteroposterior and lateral views. This decreased from a mean of 25 mm in the control group to 20 mm in the study group (p = 0.0001). The number of mechanical failures by cut-out of the screw from the head decreased from 16 (8%) in the control group at a mean of 13 months to none in the study group at a mean of eight months (p = 0.0015). There were significantly fewer poor reductions in the study group. Our study confirms the importance of good surgical technique in the treatment of trochanteric fractures and supports the concept of the TAD as a clinically useful way of describing the position of the screw.
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              Integrity of the lateral femoral wall in intertrochanteric hip fractures: an important predictor of a reoperation.

              Steffen Jacobsen, , Stig E. Holm … (2007)
              Reoperations after intertrochanteric fractures are often necessitated by fracture displacement following mobilization of the patient. The biomechanical complexity of the fracture, the position of the implant, and the patient's characteristics are known to influence postoperative outcome. We investigated the importance of an intact lateral femoral wall as a factor in postoperative fracture displacement after fixation with a sliding compression hip screw. Two hundred and fourteen consecutive patients with an intertrochanteric fracture were treated with a 135 degrees sliding compression hip screw with a four-hole side-plate between 2002 and 2004. The fractures were classified on preoperative radiographs according to the AO/OTA classification system. The status of the greater and lesser trochanters, the integrity of the lateral femoral wall, and the position of the implant were assessed postoperatively. Reoperations due to technical failure were recorded for six months postoperatively. Only 3% (five) of 168 patients with an intact lateral femoral wall postoperatively underwent a reoperation within six months, whereas 22% (ten) of forty-six patients with a fractured lateral femoral wall were operated on again (p < 0.001). Multivariate logistic regression analyses combining demographic and biomechanical parameters showed a compromised lateral femoral wall to be a significant predictor of a reoperation (p = 0.010). Seventy-four percent (thirty-four) of the forty-six fractures of the lateral femoral wall occurred during the operative procedure itself. A fracture of the lateral femoral wall occurred in only 3% (three) of the 103 patients with an AO/OTA type-31-A1.1, A1.2, A1.3, or A2.1 intertrochanteric fracture compared with 31% (thirty-one) of the ninety-nine with an AO/OTA type 31-A2.2 or A2.3 fracture (p < 0.001). A postoperative fracture of the lateral femoral wall was found to be the main predictor for a reoperation after an intertrochanteric fracture. Consequently, we concluded that patients with preoperative or intraoperative fracture of the lateral femoral wall are not treated adequately with a sliding compression hip-screw device, and intertrochanteric fractures should therefore be classified according to the integrity of the lateral femoral wall, especially in randomized trials comparing fracture implants.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Cureus
                Journal ID (iso-abbrev): Cureus
                Journal ID (issn): 2168-8184
                Title: Cureus
                Publisher: Cureus (Palo Alto (CA) )
                ISSN (Electronic): 2168-8184
                Publication date (Electronic, pub): 20 March 2023
                Publication date (Electronic, collection): March 2023
                Volume: 15
                Issue: 3
                Electronic Location Identifier: e36397
                Affiliations
                [1 ] Orthopedics and Traumatology, Dr. Lutfi Kirdar Kartal City Hospital, Istanbul, TUR
                Author notes
                Article
                DOI: 10.7759/cureus.36397
                PMC ID: 10115748
                PubMed ID: 37090379
                SO-VID: 3185cd93-bc68-4088-b1c2-8db40d2405f1
                Copyright © Copyright © 2023, Şensöz et al.
                License:

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                Date accepted : 20 March 2023
                Categories
                Subject: Orthopedics

                Keywords: reverse oblique,intramedullary,fracture fixation,open fracture reduction,hip fractures
                Data availability:
                Keywords: reverse oblique, intramedullary, fracture fixation, open fracture reduction, hip fractures

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