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Reconstruction of unstable syndesmotic injuries is not trivial, and there is no generally accepted treatment guidelines. Thus, there still remain considerable controversies regarding diagnosis, classification and treatment of syndesmotic injuries. Syndesmotic malreduction is the most common indication for early re-operation after ankle fracture surgery, and widening of the ankle mortise by only 1 mm decreases the contact area of the tibiotalar joint by 42%. Outcome of ankle fractures with syndesmosis injury is worse than without, even after surgical syndesmotic stabilization. This may be due to a high incidence of syndesmotic malreduction revealed by increasing postoperative computed tomography controls. Therefore, even open visualization of the syndesmosis during the reduction maneuver has been recommended. Thus, the most important clinical predictor of outcome is consistently reported as accuracy of anatomic reduction of the injured syndesmosis. In this context the TightRope ® system is reported to have advantages compared to classical syndesmotic screws. However, rotational instability of the distal fibula cannot be safely limited by use of 1 or even 2 TightRopes ® . Therefore, we developed a new syndesmotic Internal Brace TM technique for improved anatomic distal tibiofibular ligament augmentation to protect healing of the injured native ligaments. The Internal Brace TM technique was developed by Gordon Mackay from Scotland in 2012 using SwiveLocks ® for knotless aperture fixation of a FiberTape ® at the anatomic footprints of the augmented ligaments, and augmentation of the anterior talofibular ligament, the deltoid ligament, the spring ligament and the medial collateral ligaments of the knee have been published so far. According to the individual injury pattern, patients can either be treated by the new syndesmotic Internal Brace TM technique alone as a single anterior stabilization, or in combination with one posteriorly directed TightRope ® as a double stabilization, or in combination with one TightRope ® and a posterolateral malleolar screw fixation as a triple stabilization. Moreover, the syndesmotic Internal Brace TM technique is suitable for anatomic refixation of displaced bony avulsion fragments too small for screw fixation and for indirect reduction of small posterolateral tibial avulsion fragments by anatomic reduction of the anterior syndesmosis with an Internal Brace TM after osteosynthesis of the distal fibula. In this paper, comprehensively illustrated clinical examples show that anatomic reconstruction with rotational stabilization of the syndesmosis can be realized by use of our new syndesmotic Internal Brace TM technique. A clinical trial for evaluation of the functional outcomes has been started at our hospital.

SyndesmoticInternalBraceTMfor anatomic distal tibiofibular ligament augmentation

SyndesmoticInternalBrace^TMfor anatomic distal tibiofibular ligament augmentation