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
Randomized Controlled Trial
. 2019 Dec;90(6):542-546.
doi: 10.1080/17453674.2019.1657261. Epub 2019 Aug 27.

Similar outcome of femoral neck fractures treated with Pinloc or Hansson Pins: 1-year data from a multicenter randomized clinical study on 439 patients

Kristine Kalland  1 , Henrik Åberg  2 , Anna Berggren  3 , Michael Ullman  4 , Greta Snellman  2 , Kenneth B Jonsson  2 , Torsten Johansson  5
Affiliations
Randomized Controlled Trial

Similar outcome of femoral neck fractures treated with Pinloc or Hansson Pins: 1-year data from a multicenter randomized clinical study on 439 patients

Kristine Kalland et al. Acta Orthop. 2019 Dec.

Abstract

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 < 70 years, or (c) ≥ 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 ≥ 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.

PubMed Disclaimer

Figures

Figure 1.
Figure 1.
Hansson Pinloc System.
Figure 2.
Figure 2.
Flow chart of patient enrollment.
See this image and copyright information in PMC

References

    1. Alho A, Austdal S, Benterud J G, Blikra G, Lerud P, Raugstad T S. Biases in a randomized comparison of three types of screw fixation in displaced femoral neck fractures. Acta Orthop Scand 1998; 69(5): 463–8. - PubMed
    1. Bartels S, Gjertsen J E, Frihagen F, Rogmark C, Utvåg S E. High failure rate after internal fixation and beneficial outcome after arthroplasty in treatment of displaced femoral neck fractures in patients between 55 and 70 years. Acta Orthop 2018; 89(1): 53–8. - PMC - PubMed
    1. Bhandari M, et al. Fracture fixation in the operative management of hip fractures (FAITH): an international, multicentre, randomised controlled trial. Lancet 2017; 389(10078): 1519–27 - PMC - PubMed
    1. Brattgjerd J E, Loferer M, Niratisairak S, Steen H, Strømsøe K. Increased torsional stability by a novel femoral neck locking plate: the role of plate design and pin configuration in a synthetic bone block model. Clin Biomech 2018; 55: 28–35. - PubMed
    1. Gjertsen J E, Fevang J M, Matre K, Vinje T, Engesaeter L B. Clinical outcome after undisplaced femoral neck fractures. Acta Orthop 2011; 82(3): 268–74. - PMC - PubMed

Publication types