LANDING KINEMATICS AFTER ACL RECONSTRUCTION; DO THE BIOMECHANIST AND PHYSIOTHERAPIST SEE DIFFERENT THINGS?

Rehabilitation following ACL reconstruction is a long process where the chance of a recurrent injury remains high. Compensatory and asymmetric landing strategies, which may lead to these re-injuries, often remain present during the rehabilitation process although not often visually identified. Therefore, the purpose of this study was to compare the visually identified asymmetries with objective inertial sensor data during the Single and Triple Hop test. The kinematic data was able to identify asymmetric kinematics that led to altered strategies that were not identified subjectively by the physiotherapist in both the Single and Triple Hop, in particular in the hip joint. It is speculated that being able to able to identify these asymmetric strategies will improve ACLR rehabilitation and reduce the chance of a re-injury

Mutations in the Na+/K+-ATPase α3 Gene ATP1A3 Are Associated with Rapid-Onset Dystonia Parkinsonism

AbstractRapid-onset dystonia-parkinsonism (RDP, DYT12) is a distinctive autosomal-dominant movement disorder with variable expressivity and reduced penetrance characterized by abrupt onset of dystonia, usually accompanied by signs of parkinsonism. The sudden onset of symptoms over hours to a few weeks, often associated with physical or emotional stress, suggests a trigger initiating a nervous system insult resulting in permanent neurologic disability. We report the finding of six missense mutations in the gene for the Na+/K+-ATPase α3 subunit (ATP1A3) in seven unrelated families with RDP. Functional studies and structural analysis of the protein suggest that these mutations impair enzyme activity or stability. This finding implicates the Na+/K+ pump, a crucial protein responsible for the electrochemical gradient across the cell membrane, in dystonia and parkinsonism

Patient-Reported Outcome questionnaires for hip arthroscopy: a systematic review of the psychometric evidence

Abstract Background Hip arthroscopies are often used in the treatment of intra-articular hip injuries. Patient-reported outcomes (PRO) are an important parameter in evaluating treatment. It is unclear which PRO questionnaires are specifically available for hip arthroscopy patients. The aim of this systematic review was to investigate which PRO questionnaires are valid and reliable in the evaluation of patients undergoing hip arthroscopy. Methods A search was conducted in Pubmed, Medline, CINAHL, the Cochrane Library, Pedro, EMBASE and Web of Science from 1931 to October 2010. Studies assessing the quality of PRO questionnaires in the evaluation of patients undergoing hip arthroscopy were included. The quality of the questionnaires was evaluated by the psychometric properties of the outcome measures. The quality of the articles investigating the questionnaires was assessed by the COSMIN list. Results Five articles identified three questionnaires; the Modified Harris Hip Score (MHHS), the Nonarthritic Hip Score (NAHS) and the Hip Outcome Score (HOS). The NAHS scored best on the content validity, whereas the HOS scored best on agreement, internal consistency, reliability and responsiveness. The quality of the articles describing the HOS scored highest. The NAHS is the best quality questionnaire. The articles describing the HOS are the best quality articles. Conclusions This systematic review shows that there is no conclusive evidence for the use of a single patient-reported outcome questionnaire in the evaluation of patients undergoing hip arthroscopy. Based on available psychometric evidence we recommend using a combination of the NAHS and the HOS for patients undergoing hip arthroscopy.</p

MOESM2 of Intrarater reliability of the Humac NORM isokinetic dynamometer for strength measurements of the knee and shoulder muscles

Additional file 2. Mean peak torque values ¹ standard deviations for tests and re-tests of the shoulder internal and external rotators

MOESM1 of Intrarater reliability of the Humac NORM isokinetic dynamometer for strength measurements of the knee and shoulder muscles

Additional file 1. Mean peak torque values ¹ standard deviations for tests and re-tests of the knee extensors and flexors

The Dutch Hip and Groin Outcome Score: Cross-cultural Adaptation and Validation According to the COSMIN Checklist

STUDY DESIGN: Clinical measurement. BACKGROUND: The Copenhagen Hip and Groin Outcome Score (HAGOS) was developed as a patient-reported outcome measure for young, active individuals with hip and groin pain. OBJECTIVES: To cross-culturally adapt and validate a Dutch version of the HAGOS. METHODS: Adaptation and validation were performed according to existing guidelines and the Consensus-based Standards for the selection of health Measurement INstruments checklist. Physically active (Tegner activity score of greater than 2) adults between 18 and 50 years of age with hip and groin pain (numeric pain score of 1 or greater) were included in the study. Reliability (test-retest, internal consistency) was assessed in clinically stable patients. Construct validity was determined by calculating Spearman correlations between the scores on the HAGOS and scores on the Hip disability and Osteoarthritis Outcome Score and European Quality of Life-5 Dimensions subscales. Fifteen hypotheses were defined a priori. Interpretability was considered good when floor and ceiling effects were present in less than 15% of individuals. RESULTS: A Dutch version of the HAGOS was created. Its reliability was tested in 129 individuals and its validity in 194 participants. Test-retest reliability was good (intraclass correlation coefficient = 0.83-0.87). Internal consistency was good (Cronbach α = .81-.92). Construct validity was considered good: 13 of 15 (87%) hypotheses were confirmed. Floor effects (21%) were present for the physical activity subscale. CONCLUSION: The Dutch HAGOS is a reliable and valid patient-reported outcome measure and performs similarly to the original version in its target population. It can be used in clinical as well as research settings. Presence of floor effects should be considered for the physical activity subscale