In comparison to previous implants, the Femoral neck system (FNS) is an approved implant by the competent authorities (CE mark). It is designated to stabilize medial femoral neck fractures in a minimal invasive technique. The implant combines an angular stable device with screw in screw technology for rotational stability. Therefore the purpose of this focused registry is to investigate how the newly developed and approved implant called FNS is performing clinically and radiologically in terms of surgical technique, intra- and postoperative complications and short term outcome.
All patients included are treated as per standard or care and followed up from the time point of enrollment until at least three months after surgery as described below. Data of a visit after 6 months and 12 months are collected if bone union according to the RUSH score is not complete after 3 or 6 months respectively or if the patient has persistent or increasing pain on the operated site. Preoperative: * Patient details * Fracture Classification and comminution based on CT * Pre-fracture HHS and EQ5D * X-rays Intraoperative: * Surgery details * Defined intraoperative complications * Intraoperative fluoroscopy: hip ap (with leg 15° internally rotated) and lateral after reduction and after implant placement Postoperative: * X-ray prior to any mechanical load: hip ap (with leg 15° internally rotated) and lateral 6 weeks and 3 months FU: * Defined postoperative complications * HSS and EQ5D * X-rays
Study Type
OBSERVATIONAL
Enrollment
125
Surgical intervention using the FNS
Medizinische Universität Innsbruck
Innsbruck, Tyrol, Austria
Ulm University
Ulm, Baden-Wurttemberg, Germany
Friedrich-Schiller-Universität Jena
Jena, Thuringia, Germany
Kantonsspital Baselland
Bruderholz, Basel-Landschaft, Switzerland
Ospedale Regionale di Lugano
Lugano, Canton Ticino, Switzerland
Luzerner Kantonsspital
Lucerne, Switzerland
Stadtspital Triemli
Zurich, Switzerland
Number of complications within the first 3 months after surgery
Time frame: 3 months
Fracture mechanism
Classification of the fracture mechanism in one of the following group: Fall from standing height , Falls from elevated height, Road traffic accident or Other causes
Time frame: Pre-operatively (Day -1)
Classification of the fracture
Classification of the fracture using the Garden classification and the AO/AOTA classification
Time frame: Pre-operatively (Day -1)
Time from injury to surgery
Time in hours from the injury to the start of the surgery
Time frame: Surgery (Day 0)
Length of surgery
Time in minutes from first incision to closure
Time frame: Surgery (Day 0)
Harris Hip Score
Time frame: Pre-operatively (Day -1), 6 weeks, 3 months, 6 months and 12 months after surgery
EQ5D-5L
Time frame: Pre-operatively (Day -1), 6 weeks, 3 months, 6 months and 12 months after surgery
Radiological bone union (RUSH score)
RUSH score
Time frame: 6 weeks, 3 months, 6 months and 12 months after surgery
Quality of reduction (Garden's alignment index and Lowell's criteria)
Garden's alignment index and Lowell's criteria
Time frame: Surgery (Day 0)
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