Unique ID issued by UMIN | UMIN000022961 |
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Receipt number | R000026405 |
Scientific Title | New Predictors for Screw Cutout in Intertrochanteric Hip Fractures Treated by Short Femoral Nail: a multicenter cohort study |
Date of disclosure of the study information | 2016/06/30 |
Last modified on | 2018/05/15 11:25:05 |
New Predictors for Screw Cutout in Intertrochanteric Hip Fractures Treated by Short Femoral Nail: a multicenter cohort study
NPSC study
New Predictors for Screw Cutout in Intertrochanteric Hip Fractures Treated by Short Femoral Nail: a multicenter cohort study
NPSC study
Japan |
Intertrochanteric hip fracture
Orthopedics |
Others
NO
The purposes of this study are to quantify screw position in femoral head, to examine whether our new predictor can predict screw cutout, and to compare the new predictor and Tip-apex distance through X-ray images.
Safety
Not applicable
Presence or absence of screw cutout within 3 months (12 weeks).
1) The main surgeon's diagnosis of high risk sign of screw cutout
2) The pre/post-op change of modified Harris hip score
Observational
20 | years-old | <= |
Not applicable |
Male and Female
Patients diagnosed with intertrochanteric femoral fracture and who agree to participate in this study
1) patients who do not undergo surgery
2) patients on whom short femoral nail is not used
3) patients who suffer any other fracture together with intertrochanteric femoral fracture
4) patients who had suffered any other fracture within 6 months prior to intertrochanteric femoral fracture
5) patients whose X-ray photography is insufficient to evaluate the indexes because of obscureness or overlap of screw and intramedullary nail
212
1st name | |
Middle name | |
Last name | Hidemi Kawaji |
Nippon Medical School
Orthopedic Surgery
1-1-5 Sendagi, Bunkyo-ku, Tokyo, Japan
03-3822-2131
npsc-admin@umin.ac.jp
1st name | |
Middle name | |
Last name | Naoya Hoshikawa |
Nippon Medical School
Orthopedic Surgery
1-1-5 Sendagi, Bunkyo-ku, Tokyo, Japan
03-3822-2131
npsc-admin@umin.ac.jp
Nippon Medical School Orthopedic Surgery
Nippon Medical School Orthopedic Surgery
Self funding
NO
日本医科大学付属病院(東京都)/Nippon Medical School Hospital
日本医科大学武蔵小杉病院(神奈川県)/Nippon medical school Musashi Kosugi Hospital
日本医科大学多摩永山病院(東京都)/Nippon Medical School Tama Nagayama Hospital
日本医科大学千葉北総病院(千葉県)/Nippon Medical School Chiba Hokusoh Hospital
金町中央病院(東京都)/Kanamachi Central Hospital
北村山公立病院(山形県)/Kitamurayama Hospital
2016 | Year | 06 | Month | 30 | Day |
Unpublished
Open public recruiting
2016 | Year | 06 | Month | 30 | Day |
2016 | Year | 07 | Month | 01 | Day |
Evaluation points are information from medical interview before- and more than 3 months after operation, treatment progress, and findings and indexes from X-ray photographs (anteroposterior, axial and Lauenstein views) before and after operation. Patients are treated with ITST nail.
Medical interviews are performed by the main surgeon. Findings and Indexes from X-ray photographs are checked by 3 orthopedic surgeons as patients' information is blinded.
Indexes are Tip-apex distance (TAD) and new predictors which include inferior distance (ID), Tip-Cortex distance (TCD), anterior distance (AD), and variables which combine ID, TCD and AD.
ID is the shortest distance from tip of lag screw to femoral neck axis in anteroposterior view. AD is also the shortest distance from tip of lag screw to femoral neck axis in the axial and Lauenstein views. ID is a negative value when tip of lag screw is placed proximal of femoral neck axis. Similarly, AD is a negative value when tip of lag screw is placed posterior of femoral neck axis.
TCD is the distance from tip of lag screw to intersection of extension of a lag screw axis and the femoral head cortex. TCD is measured in the anteroposterior, axial and Lauenstein views.
ID, AD, and TCD are calibrated in accordance with the diameter of lag screw, in the same way as TAD.
2016 | Year | 06 | Month | 30 | Day |
2018 | Year | 05 | Month | 15 | Day |
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000026405
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