Special Technical ArticlesA New Joystick Technique for the Reduction of Unstable Trochanteric Hip Fractures: Especially With Rotational DeformityOkazaki, Atsushi PhD*; Murase, Tomoo PhD*; Sakano, Hiroaki PhD†; Saito, Tomoyuki PhD‡ Author Information *Department of Orthopaedic Surgery, International University of Health and Welfare Atami Hospital Shizuoka Prefecture †Department of Orthopaedic Surgery, Hiratsuka Kyosai Hospital, Hiratsuka ‡Yokohama City Stroke, Nerve Backbone Center, Yokohama, Japan The authors declare that they have nothing to disclose. For reprint requests, or additional information and guidance on the techniques described in the article, please contact Atsushi Okazaki, PhD, at [email protected] or by mail at 13-1 Higashikaigan-cho, Atami-shi, Sizuoka-ken 413-0012, Japan. You may inquire whether the author(s) will agree to phone conferences and/or visits regarding these techniques. Techniques in Orthopaedics: December 2020 - Volume 35 - Issue 4 - p 281-285 doi: 10.1097/BTO.0000000000000355 Buy Metrics Abstract We are performing surgical treatment of trochanteric hip fractures using an intramedullary nail. There are irreducible fractures in which the correct reduction cannot be performed with the usual traction and internal rotation. In particular, the rotational deformity is difficult to reduce. One of the causes of this is the instability and uncontrollability of the proximal bone fragment. To address this problem, we devised a new joystick technique. From the same skin incision as used for inserting the intramedullary nail, a 3.0 mm Kirschner wire (K-wire) is inserted into the femoral neck perpendicularly. A K-wire is inserted at the front part of the femoral neck so as not to interfere with the lag screw. The fracture is reduced by operating the proximal bone fragment by using the K-wire as a joystick. The proximal bone fragment is operated in the varus-valgus direction by moving the K-wire proximally-distally and in internal-external rotation directions by moving the K-wire anteriorly-posteriorly. No complications, such as cut-out of the femoral neck due to the K-wire or neurovascular injury, were observed. The joystick technique was used in the following situations: (1) stabilization of the proximal bone fragment, (2) rotational reduction of the proximal bone fragment, and (3) prevention of rotational deformity caused by lag screw insertion. This joystick technique is simple and less invasive so we do not consider it a problem to apply it routinely, in all cases. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.