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Similar outcome of femoral neck fractures treated with Pinloc or Hansson Pins: 1-year data from a multicenter randomized clinical study on 439 patients
Linköping University, Department of Clinical and Experimental Medicine, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences. Nykoping Hosp, Sweden.
Uppsala Univ, Sweden.
Falun Cent Hosp, Sweden.
Sahlgrens Univ Hosp, Sweden; Univ Gothenburg, Sweden.
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2019 (English)In: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682Article in journal (Refereed) Epub ahead of print
Abstract [en]

Background and purpose - There are few reports on the efficiency of the Hansson Pinloc System (Pinloc) for fixation of femoral neck fractures. We compare Pinloc with the commonly used Hansson Pin System in a randomized clinical trial. The primary outcome measure is non-union or avascular necrosis within 2 years. We now report fracture failures and reoperations within the first year. Patients and methods - Between May 2014 and February 2017, 439 patients were included in the study. They were above 50 years of age and treated for a femoral neck fracture at 9 orthopedic departments in Sweden. They were randomized to either Pinloc or Hansson pins. The fractures were grouped as (a) non-displaced regardless of age, (b) displaced in patients amp;lt; 70 years, or (c) amp;gt;= 70 years old, but deemed unfit to undergo arthroplasty. Follow-up with radiographs and outpatient visits were at 3 and 12 months. Failure was defined as early displacement/non-union, symptomatic segmental collapse, or deep infection. Results - 1-year mortality was 11%. Of the 325 undisplaced fractures, 12% (21/169) Pinloc and 13% (20/156) Hansson pin patients had a failure during the first year. The reoperation frequencies were 10% (16/169) and 8% (13/156) respectively. For the 75 patients 50-69 years old with displaced fractures, 11/39 failures occurred in the Pinloc group and 11/36 in the Hansson group, and 8/39 versus 9/36 patients were reoperated. Among those 39 patients amp;gt;= 70 years old, 7/21 failures occurred in the Pinloc group and 4/18 in the Hansson group. Reoperation frequencies were 4/21 for Pinloc and 3/18 for the Hansson pin patients. No statistically significant differences were found in any of the outcomes between the Pinloc and Hansson groups. Interpretation - We found no advantages with Pinloc regarding failure or reoperation frequencies in this 1-year follow-up.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD , 2019.
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Orthopaedics
Identifiers
URN: urn:nbn:se:liu:diva-160425DOI: 10.1080/17453674.2019.1657261ISI: 000483831000001PubMedID: 31452431OAI: oai:DiVA.org:liu-160425DiVA, id: diva2:1353434
Available from: 2019-09-23 Created: 2019-09-23 Last updated: 2019-09-23

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Kalland, KristineJohansson, Torsten
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Division of Surgery, Orthopedics and OncologyFaculty of Medicine and Health SciencesDepartment of Orthopaedics in Linköping
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Acta Orthopaedica
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