Purpose. The aim of this study was to demonstrate the joint fragment that mostly affects the outcome of the distal radius fracture surgically treated with a volar locking plate (VLP). Methods. The outcomes of 69 patients with the distal radius fractures were evaluated at their final follow-up. The articular surface was divided into six specific fragments, and computed tomography (CT) was used to evaluate the degree of mismatch of each fragments. A plain radiograph was also obtained for evaluation of the distal radius alignment. Clinical outcomes were measured by using the Disabilities of the Arm, Shoulder and Hand (DASH) and Modified Mayo Wrist Score (MMWS). Univariate analyses were performed, with subsequent multiple logistic regression analyses. Results. The mean follow-up period was 14.8 (range, 12 to 52) months. The group with a worse DASH score showed significantly greater mismatch in the volar and dorsal lunate facets, as well as the central depression of the distal radius ( p = 0.042 , 0.031, and 0.023, respectively). There was a significant positive correlation between the DASH score and degree of mismatch of the dorsal lunate facet and central depression of the distal radius ( p = 0.040 and 0.011, respectively). Groups with worse MMWS showed significantly greater mismatch in the dorsal lunate facet ( p = 0.025 ). There was a significant negative correlation between MMWS and abnormal ulnar variance and mismatch of the dorsal lunate facet and central depression of the distal radius ( p = 0.041 , 0.004, and 0.018, respectively). The result of multiple logistic regression analysis demonstrated that a mismatch of the dorsal lunate facet is a significant predictor for a worse MMWS ( odds ratio = 3.072 , p = 0.043 ). Conclusions. Articular surface mismatch of the dorsal lunate facet appears to mostly affect the surgical outcomes of the distal radius fractures using VLP. In cases where the dorsal lunate facet is heavily involved, surgeons should be cautious about its reduction and fixation.
Surgical site infection (SSI) is a major complication after the surgical treatment of ankle fractures that can result in catastrophic consequences. This study aimed to determine the incidence of SSI in several cohorts from national insurance databases over the past 12 years and identify its predictors. The claimed data for patients (n = 1,449,692) with ankle fractures between 2007 and 2019 were investigated, and a total of 41,071 patients were included in the final analysis. The covariates included were age, sex, season, fracture type (closed vs. open), type of surgical fixation procedure, and comorbidities of each patient. All subjects were divided into two groups according to the SSI after the surgical fixation of the ankle fracture (no infection group vs. infection group). The number of SSIs after the surgical treatment of ankle fractures was 874 (2.13%). Open fractures [odds ratio, (OR) = 4.220] showed the highest risk for SSI, followed by the male sex (OR = 1.841), an increasing number of comorbidities (3–5, OR = 1.484; ≥6, OR = 1.730), a history of dementia (OR = 1.720) or of myocardial infarction (OR = 1.628), and increasing age (OR = 1.010). The summer season (OR = 1.349) showed the highest risk among the four seasons for SSI after ankle fracture surgery.
Peripheral nerve injuries (PNIs) in the upper extremities is an important medical problem, causing significant morbidity at a relatively young age. The epidemiology of PNI in South Korea has not been comprehensively evaluated. The purpose of our study was to examine the incidence of upper extremity PNI in South Korea based on an analysis of nationwide data and to investigate the association between PNI and patients’ demographic characteristics. Patient claims data from the Health Insurance Review and Assessment Service from 2008 to 2018 were collected. Demographic characteristics, such as the age, sex, region, admission route, length of hospital stay, healthcare facility level, and cost were evaluated. Annual incidence, body sites affected, damaged nerves, accompanying injuries, and surgical procedures were analyzed. Annual incidence trends, injured anatomical area, seasonal injury trends, and injury trend according to sex were also evaluated. A total of 57,209 cases were identified during the study period. Mean age was 39.7 ± 16.3 years. Of these cases, 51,651 (90.28%) were surgically treated. About 79% of accompanying injuries occurred in the hand area (hand lacerations, 69.5%; fractures or joint dislocations of the hands, 6.86%; crushing injuries of the hands, 2.67%). Overall, injuries to the digital nerve showed the greatest frequency (62.7%). In the upper arm and forearm, the ulnar nerve was most frequently injured; however, in the hand, radial nerve injuries were most common. The annual incidence rate per 100,000 persons decreased from 10.67 in 2008 to 7.88 in 2018. The annual incidence decreased by 0.98 times per year. PNI occurred 33.91 times more frequently in the finger than in the upper arm, and there were 1.16 times more PNIs in the summer and 2.14 times more in men. We investigated the incidence trend and epidemiologic characteristics of upper extremity peripheral nerve injury in South Korea from 2008 to 2018. A decreasing tendency of annual incidence was observed from 2013 onwards. Finger and digital nerve were most commonly injured, and the incidence of PNI was higher in the summer and in men.
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