ObjectiveThis study evaluated the intraobserver and interobserver reliability of the AO classification for standard radiographs of wrist fractures.MethodsThirty observers, divided into three groups (orthopedic surgery senior residents, orthopedic surgeons, and hand surgeons) classified 52 wrist fractures, using only simple radiographs. After a period of four weeks, the same observers evaluated the initial 52 radiographs, in a randomized order. The agreement among the observers, the groups, and intraobserver was obtained using the Kappa index. Kappa-values were interpreted as proposed by Landis and Koch.ResultsThe global interobserver agreement level of the AO classification was considered fair (0.30). The three groups presented fair global interobserver agreement (residents, 0.27; orthopedic surgeons, 0.30; hand surgeons, 0.33). The global intraobserver agreement level was moderated. The hand surgeon group obtained the higher intraobserver agreement level, although only moderate (0.50). The residents group obtained fair levels (0.30), as did the orthopedics surgeon group (0.33).ConclusionThe data obtained suggests fair levels of interobserver agreement and moderate levels of intraobserver agreement for the AO classification for wrist fractures.

We present the case of an 18-year-old high-level gymnast who sustained a stress fracture of the scaphoid associated with a distal radial epiphysiolysis. Clinical evaluation demonstrated decreased range of motion of the affected wrist and insidious pain on the snuffbox and tenderness on the distal radial physis. He was submitted to surgical treatment with scaphoid percutaneous fixation and radial styloid process in situ fixation. Clinical features improved, and he got back to competition 6 months after surgery without symptoms and with complete range of motion.

Objective: To assess and compare radiographic, tomographic and functional pre and postoperative parameters of patients submitted to treatment of nonunion of the scaphoid waist with locked plate for scaphoid. Methods: This is a case series of scaphoid waist nonunion, operated from March 2017 to March 2018 at the Institute of Orthopedics and Traumatology of HCFMUSP, using the technique of Fisk-Fernandez and osteosynthesis with locked plate for scaphoid APTUS®Hand from Medartis. The patients were submitted to radiographs, computed tomography and functional evaluation by the occupational therapy team in the pre and postoperative periods. Results: There was consolidation of the scaphoid waist nonunion in all cases, improvement in the parameters of carpal alignment in the imaging examinations, but functionally we observed reduction of the range of motion and grip strength in relation to the contralateral limb. Conclusions: The treatment of the scaphoid waist nonunion with locked plate was effective, with a high index of consolidation and improvement of the carpal alignment in the imaging tests, although with a reduction in the range of motion and grip strength in relation to the contralateral limb when evaluated with 12 weeks postoperatively. Level of Evidence IV, Case series.

Objective: Distal forearm fractures are among the most common upper limb fractures in all ages, and many classifications have been proposed to describe them. Recently, a new version of AO/OTA classification was proposed. The aim of this study is to use the AO/OTA 2018 classification to report the epidemiology of distal forearm fractures in adults treated at a single center. Methods: A retrospective analysis of the initial radiographs obtained from cases of distal forearm fractures in an orthopedic emergency room at a single tertiary hospital. Results: Three hundred twenty-two cases were studied, aged 50.35 ± 18.98 years, 55.3% were female and 44.7% were right-sided. Type 2R3A, 2R3B and 2R3C fractures corresponded to 32.3%, 18.0% and 48.4% of the cases, respectively. Distal ulnar fracture was present in 41.9%. There was a correlation between age and sex: 78.3% of the subjects aged under 30 years were male, and 80.6% of those aged over 60 years were female (p<0.001). Conclusion: The most common type of radial fractures was 2R3C, and the most common type of ulna fracture was 2U3A1.1. There was a correlation between age and sex. Level of evidence IV, Case-series.