Objective: A) To evaluate the reliability of a new technique for the measurement of both intermetatarsal and hallux valgus angles. B) To evaluate whether this technique can be performed with the aid of a smartphone application. Methods: Preoperative radiographs of 30 patients were evaluated by four observers, two experienced surgeons and two surgeons in training. They performed measurements of the intermetatarsal angle and hallux valgus angle using the classical method and using the new method, both employing a goniometer and a smartphone application. Analysis of agreement was done by quantifying the raw agreement and calculating the intraclass correlation coefficient (ICC). Results: The hallux valgus angle presented excellent agreement (ICC>0.80) both using the traditional method and the point connection method, while the intermetatarsal angle presented a very good agreement (0.60<ICC≤0.80) in both methods. Conclusion: The point connection technique showed good concordance rates when measured by smartphone applications, although it did not prove to be superior to the traditional one. Level of Evidence II; Diagnostic Study; Development of Diagnostic Criteria.

Introduction: Maisonneuve’s fracture is named after the French surgeon who first described it in 1840. This injury is rare and is characterized by a combination of a fracture of the ipsilateral fibula and an injury to the medial structures of the ankle, and there may also be a rupture of the syndesmosis, tibiofibular and deltoid ligament, followed by rupture of the anteroinferior tibiofibular ligament and rupture of the interosseous ligament and interosseous membrane. Case Report: A 70-year-old female patient reported pain in the right lower limb. Clinical examination, after excluding possible fractures associated with age group, revealed hematoma on the ankle, edema on the topography of the right lateral malleolus and on the lateral aspect of the right knee. Radiographs revealed lateral subluxation of the right ankle, increased medial free space associated with fracture of the medial malleolus, fracture of the posterior malleolus, and proximal fracture of the ipsilateral fibula. The patient was admitted for urgent orthopedic surgery. Lateral access distal to the fibula was used in the distal fibulotibial joint, anatomical reduction of the ankle with reduction forceps and placement of a 3.5 mm third-barrel plate and two 3.5 mm cortical screws with sizes of 50 and 45 mm under fluoroscopy. Conclusion: A Maisonneuve fracture is an orthopedic emergency that needs to be identified quickly because it usually requires surgery. Surgery must be well planned and requires an adequate postoperative period to rehabilitate the patient to avoid sequelae such as early osteoarthrosis and chronic pain.