Purpose The Knee Injury Osteoarthritis Outcome Score (KOOS) questionnaire is one of the frequently used outcome scores in pediatric studies. However, a recent study demonstrated that the pediatric population had a limited understanding of some of its questions. Therefore, the KOOS‐Child questionnaire was developed specifically for this population. Our team produced a French adaptation based on the English version. The objective of the current study was to validate the French adaptation of the KOOS‐Child questionnaire. Methods After ethic board approval, the questionnaire was translated from English to French by two French speaking orthopedic surgeons. Following consensus, the translated version was retranslated to English by a professional translator. A group of experts compared the original and back translated version and decided on a final adapted questionnaire version. Ninety‐nine 8–16 year‐old patients were prospectively recruited from our pediatric orthopedic surgery clinic. Twenty‐one control participants and 78 patients suffering from knee pain were recruited. The participants were asked to answer the translated French version of the KOOS‐Child questionnaire and two validated French pediatric quality of life surveys. Results Statistical analysis demonstrated no statistically significant demographic difference between the control population and the patients suffering from a knee pathology. The mean for the five different domains of the KOOS‐Child questionnaire showed statistical differences (p < 0.001) between the two groups. Construct validity was demonstrated through testing of previously validated hypothesis of correlation. Internal consistency was also confirmed in injured patients. Conclusions In conclusion, the current study results demonstrate good to excellent internal consistency, good construct validity and inconclusive discriminant capacity of the French adaptation of the KOOS‐Child questionnaire. Level of evidence II.

Incidence of secondary interventions after early spica casting for diaphyseal femur fractures in young childrenBackground: Children aged 6 months to 5 years with diaphyseal femur fractures are typically treated with spica casting, as recommended by the American Association of Orthopaedic Surgeons clinical practice guideline. We aimed to determine the incidence of secondary interventions after early spica casting for femur fractures in children aged 6 years or less. Methods:This was a retrospective cohort study of patients aged 6 years or less with diaphyseal femur fractures treated with early spica casting at a single Canadian tertiary care, level 1 trauma pediatric centre between January 2005 and May 2015.

Objectives The aim of this study was to determine the rate of delayed or nonunion of fifth metatarsal fractures in skeletally immature patients. Using this information, we sought to develop an evidence-based clinical care pathway in order to mitigate unnecessary patient radiation exposure, costs to families, and costs to the health system. Methods We retrospectively reviewed the charts and radiographs of patients who presented to an academic tertiary-care paediatric hospital between 2009 and 2014 with isolated fifth metatarsal fractures. Results A total of 114 patients (61 males and 53 females) with mean age of 11.2 (SD 3.0) years old were included in the study. No patients required operative management. There was one case of delayed union and no cases of nonunion. There was no association of these complications with fracture type, location, or mechanism of injury. There was no association of complications with immobilization type or immobilization period. Despite the low complication rate and need for surgery, fracture clinic resource utilization was significant. Fractures were managed with a mean number of 3.1 (SD 0.89) clinic visits and a mean number of 2.7 (SD1.0) radiology department visits where a mean total of 7.9 (SD 3.4) x-rays were performed. Conclusions Based on our retrospective review, skeletally immature patients presenting with isolated fifth metatarsal fractures have a very low rate of delayed or nonunion. A selective follow-up strategy will decrease radiation exposure, reduce costs to families and the healthcare system, without compromising clinical outcomes.