Relationships between physical fitness characteristics, technical skill attributes, and sports injury in female Australian football players.

OBJECTIVES: To explore the relationships between physical fitness and i) technical skills and ii) time-loss from Australian football injury in female players across the talent and participation pathways. METHODS: This study uses a subset of data from two cross-sectional and one prospective cohort studies. A total of 223 female Australian football players across five competition levels (elite/non-elite senior, high-level junior, and non-elite junior (14-17 years)/(10-13 years)) were included in this study. Comprehensive physical fitness assessments and modified Australian football kicking and handballing tests were conducted in the 2018/19 pre-seasons. During the respective competitive in-season, time-loss injuries were recorded by team personnel. Stepwise multiple linear regressions were performed to determine the relationship between physical fitness and kicking and handballing scores. Cox proportional regressions were conducted to identify physical fitness factors associated with injury. RESULTS: Increased running vertical jump height, greater hip abduction strength, and faster timed 6 m hop speed demonstrated a relationship with kicking accuracy when adjusted for years of Australian football playing experience (adjusted R2 = 0.522, p < 0.001). Faster agility time and increased lean mass were associated with better handballing accuracy (adjusted R2 = 0.221, p < 0.001). Multivariate Cox regression revealed an increased risk for sustaining a time-loss injury in less agile players (adjusted HR 2.41, 95% CI 1.23, 4.73, p = 0.010). However, this relationship no longer remained when adjusted for age and years of Australian football experience (adjusted HR 1.68, 95% CI 0.81, 3.50, p = 0.166). CONCLUSIONS: Physical fitness may be a significant factor contributing to development of Australian football technical skills in female players. However, its role is unclear in protecting against injury risk in this athlete population. Further research is needed to explore the multifactorial and complex phenomenon of talent development and injury risk reduction in female Australian football players.

Survival outcomes of head and neck melanoma patients in Queensland, Australia from 2009 to 2018.

BACKGROUND/OBJECTIVES: To compare survival outcomes for patients with cutaneous invasive head and neck melanoma (HNM) with those of patients with melanoma on other anatomical sites. METHODS: Retrospective cohort study using patient data extracted from the Cancer Alliance Queensland's Oncology Analysis System (OASYS) over a 10-year period from 2009 to 2018. Melanoma-specific survival was compared between patients with HNM and non-HNM. Kaplan-Meier survival estimates were calculated at 5 and 10 years. Univariable and multivariable Cox proportional hazards regression analysis determined factors associated with survival. RESULTS: The 5- and 10-year survival probabilities were 90.7% and 89.1%, respectively for HNM, compared with 94.7% and 93.0%, respectively, for non-HNM melanoma. The 5- and 10-year survival probabilities for scalp melanoma were 77.8% and 75.5%, respectively. Patients with HNM died of melanoma at 1.22 times (HR 1.22, 95% CI 1.09-1.37) the rate of those with non-HNM, controlling for sex, age, socioeconomic status, remoteness, Breslow thickness, the presence of multiple invasion melanoma and ulceration. Patients with scalp melanoma died of melanoma at 1.57 times (HR 1.57, 95% CI 1.26-1.95) the rate of those with non-scalp HNM. CONCLUSIONS: There is a statistically significant survival difference between patients with HNM and non-HNM, and between patients with scalp melanoma and non-scalp HNM, even after adjusting for prognostic factors.

Analysis of patient demographics and attendance at a Far North Queensland public dermatology outpatient clinic.

BACKGROUND/OBJECTIVES: There is limited literature focussing on the demographics of patients presenting to public dermatology outpatient clinics, with an even smaller amount focussing on clinics in regional Australia. This study presents the first patient demographic analysis for the Cairns Hospital's Dermatology Outpatient Department and analyses the cohort of patients who did not attend their appointments. In doing so, it recommends potential strategies that should be considered to address the issues of patient absenteeism and wait times in a regional setting, while also suggesting future data points that should be collected for analysis. METHODS: A 4-year retrospective cohort study using demographic data from all referrals with medical officers (N = 10,333) from 1 January 2018 to 31 December 2021 at the Cairns Hospital Dermatology Outpatient Department. The hospital is the only facility with a dermatology service within the Cairns and Hinterland Hospital and Health Service. Data were extracted from the Cairns Hinterland Analytical Intelligence (CHAI) system. RESULTS: Data pertaining to patient demographics, attendance of appointments, triage categories and wait times were collected and reviewed for patients referred during the study period. CONCLUSION: The Dermatology Outpatient Department services an ever-growing and diverse patient cohort. Barriers to access and long wait times exist for patients referred to the Department. Strategies to combat these issues, such as an increase in funding and resourcing, should be considered to better optimise patient care and the utilisation of health resources.

Single-Level Total Disc Replacement: Index-Level and Adjacent-Level Revision Surgery Incidence, Characteristics, and Outcomes.

BACKGROUND: The literature reports that index level (IL) revision spine surgery (RSS) and adjacent level (AL) RSS are diminished in lumbar TDR compared with fusion procedures. There is a paucity of PROMs reported after RSS. OBJECTIVE: To present the incidence of RSS at the IL and AL following single-level lumbar total disc replacement (TDR) and to document patient-related outcome measures (PROMs) associated with RSS. METHODS: PROMs and timelines were analyzed for 32 RSS patients from a prospective cohort study of 401 patients treated with TDR for single-level degenerative disc disease. The data collected prospectively are analyzed from baseline (prior to index surgery) to latest follow-up following RSS. PROMs, including visual analog scales for back and leg, Oswestry Disability Index, and Roland-Morris Disability Questionnaire, were collected preoperatively; postoperatively at 3, 6, and 12 months; and annually thereafter until RSS. The time to RSS was recorded, and PROMs for RSS (IL, AL, or both) were documented, analyzed, and compared. RESULTS: The median time to RSS in the IL cohort was 35 months (interquartile range [IQR] = 9-51 months). The median time to RSS cohort was 70 months (IQR = 41.3-105.3 months). Timepoints facilitate PROM discussion for RSS. Patients in both groups achieved thresholds for the minimum clinically important difference for pain and disability scores. The small sample size in each group contributed to the variability demonstrated by the 95% CIs, thereby cautioning definitive conclusions. CONCLUSIONS: This study reveals that statistically significant and modest clinical improvements in PROMs can be achieved in RSS for lumbar TDR at IL and AL. The surgical approach and technique are reflective of the pathology and suggest that anterior RSS for AL degeneration and posterior RSS for IL pathology yield similar results. CLINICAL RELEVANCE: Statistical and clinical improvements can be achieved in IL-RSS and AL-RSS following single level TDR. It is essential for clinicians to understand and verify the underlying IL and/or AL pathology to select an appropriate management strategy and to facilitate balanced informed discussions with patients.

Single-Level Total Disc Replacement: Mid- to Long-Term Outcomes.

BACKGROUND: Total disc replacement (TDR) has been shown to be effective for the treatment of lumbar degenerative disc disease (DDD) in carefully selected patients. Previous studies have demonstrated high rates of patient satisfaction and improvement in patient-reported outcome measures (PROMs) compared with preoperative status but most have short-term follow-up or small cohort sizes only. OBJECTIVE: The aim of this study is to report mid- to long-term PROMs from the treatment of symptomatic single-level lumbar DDD with TDR. METHODS: Data collected prospectively concerning single-level TDR performed via an anterior approach were included for analysis. A preoperative assessment was obtained followed by postoperative follow-up assessments at 3, 6, and 12 months, and yearly follow-up thereafter. PROMs included patient satisfaction, visual analog score back and leg, Oswestry Disability Index, and Roland-Morris Disability Questionnaire. RESULTS: A total of 211 patients (118 men, 93 women) operated on between June 1997 and July 2015 were included in this study. Minimum follow-up was 4 years. The average age was 42.2 (range 24-87) years and median follow-up 96 interquartile range 72-132, range 48-120) months. The operative levels were L5-S1 (160, 75.8%) and L4-L5 (61, 24.2%). Both statistically and clinically significant improvements observed postoperatively were maintained at 10 years. In addition, 92% of patients reported either good (n = 29) or excellent satisfaction (n = 155) with treatment at final review. CONCLUSIONS: This study shows that single-level lumbar TDR used appropriately in selected patient results in clinically significant improvements in pain and function, well above the minimum clinically important difference, and good to excellent satisfaction in most patients. Further study to define long-term outcomes and survivorship is required. CLINICAL RELEVANCE: Statistically significant and clinically relevant improvements can be achieved by single-level lumbar TDR, in the treatment of single-level discogenic axial low back pain, with or without radiculopathy. These outcomes are sustained in the mid- to long-term followup periods.

Effectiveness of sensory modulation for people with schizophrenia: A multisite quantitative prospective cohort study.

INTRODUCTION: Current research evidence suggests that people with schizophrenia have sensory processing difficulties. Sensory modulation has growing evidence for use in this population. This study aimed to evaluate the extent to which health, social, cognitive, and occupational functioning outcomes were impacted by sensory modulation interventions for people with schizophrenia. METHODS: A prospective observational cohort study using a waitlist control design was used in two large hospital and health services in Queensland, Australia. The study recruited patients who used sensory modulation (n = 30) across the two hospitals and those who did not use sensory modulation interventions as a control (n = 11). Results were analysed using a series of planned comparisons including independent and paired t-tests, and mixed ANOVA was used whenever statistically indicated. The analysed measures were pre- and post-intervention scores. RESULTS: This study found no statically significant differences between the control and intervention groups at both pre- and post-intervention. However, analysis of results from within the intervention group showed statistically significant improvements between pre- and post-test scores on distress, occupational functioning, and health and social functioning but not on sensory processing and global cognitive processing. Further analysis of results from this study, compared with those from an earlier study on the general population showed significant differences in Low Registration and Sensation Avoiding, as measured by the Adult/Adolescent Sensory Profile, between participants with schizophrenia and those without schizophrenia. CONCLUSION: This study provides evidence to suggest that sensory modulation interventions can be complementary to standard care when utilised appropriately in clinical settings. Findings also suggest that the sensory profile of people with schizophrenia is different to that of the general population and this may have clinical implications. Further longitudinal research is needed with larger and randomised samples, using more targeted measures to better explore effectiveness of sensory modulation interventions.

Effects of supervised high-intensity hardstyle kettlebell training on grip strength and health-related physical fitness in insufficiently active older adults: the BELL pragmatic controlled trial.

The Ballistic Exercise of the Lower Limb (BELL) trial examined the efficacy and safety of a pragmatic hardstyle kettlebell training program in older adults. Insufficiently active men and women aged 59-79 years, were recruited to a 6-month repeated measures study, involving 3-months usual activity and 3-months progressive hardstyle kettlebell training. Health-related physical fitness outcomes included: grip strength [GS], 6-min walk distance [6MWD], resting heart rate [HR], stair-climb [SC], leg extensor strength [LES], hip extensor strength [HES], Sit-To-Stand [STS], vertical jump [CMVJ], five-times floor transfer [5xFT], 1RM deadlift, body composition (DXA), attendance, and adverse events. Sixteen males (68.8 ± 4.6 yrs, 176.2 ± 7.8 cm, 90.7 ± 11.0 kg, 29.2 ± 2.6 kg/m2) and sixteen females (68.6 ± 4.7 yrs, 163.9 ± 5.4 cm, 70.4 ± 12.7 kg, 26.3 ± 4.9 kg/m2) were recruited. Compliance with the supervised exercise program was very high (91.5%). Kettlebell training increased GS (R: MD = 7.1 kg 95% CI [4.9, 9.3], L: MD = 6.3 kg 95% CI [4.1, 8.4]), 6MWD (41.7 m, 95% CI [17.9, 65.5]), 1RM (16.2 kg, 95% CI [2.4, 30.0]), 30 s STS (3.3 reps, 95% CI [0.9, 5.7]), LES (R: MD = 61.6 N, 95% CI [4.4, 118.8]), HES (L: MD = 21.0 N,95% CI [4.2,37.8]), appendicular skeletal lean mass (MD = 0.65 kg, 95% CI [0.08, 1.22]), self-reported health change (17.1%, 95% CI [4.4, 29.8]) and decreased SC time (2.7 s, 95% CI [0.2, 5.2]), 5xFT time (6.0 s, 95% CI [2.2, 9.8]) and resting HR (7.4 bpm, 95% CI [0.7, 14.1]). There were four non-serious adverse events. Mean individual training load for group training sessions during the trial was 100,977 ± 9,050 kg. High-intensity hardstyle kettlebell training was well tolerated and improved grip strength and measures of health-related physical fitness in insufficiently active older adults.Trial registration: Prospectively registered: 20/08/2019, Australian New Zealand Clinical Trials Registry (ACTRN12619001177145).

Midterm osteolysis-induced aseptic failure of the M6-C™ cervical total disc replacement secondary to polyethylene wear debris.

BACKGROUND: According to published meta-analyses, cervical total disc replacement (CTDR) seems to be superior to anterior cervical decompression and fusion (ACDF) in most clinical parameters. Despite short-term clinical success of CTDR, there are concerns regarding long-term durability of these prostheses. METHODS: This prospective study involved 382 patients who received standalone CTDR or a hybrid procedure (ACDF/CTDR). A retrospective comparison between different CTDR devices was conducted regarding patient-reported outcome measures (PROMs), failure scenarios, and revision surgeries. The M6-C™ Artificial Cervical Disc (Orthofix, Lewisville, Texas) cohort was compared to the other CTDR devices clinically. Etiological reasons for revision, and the surgical technique of the revision was investigated. RESULTS: Fifty-three patients received M6-C CTDR. Eighteen patients (34%) were revised at an average of 67 months postoperatively for wear-induced osteolysis. There were three additional cases of pending revision. The PROMs of the two groups were similar, indicating that the failure mode (wear-induced osteolysis) is often asymptomatic. The demographics of the two groups were also similar, with more women undergoing revision surgery than men. There were three one-level CTDR, four two-level hybrids, seven three-level hybrids, and three four-level hybrids revised anteriorly. Sixteen patients underwent removal of the prosthesis and were treated according to the extent of osteolysis. There were four vertebrectomies, six revisions to ACDF, and six revisions to another CTDR. One patient underwent supplemental fixation using a posterior approach. The other CTDR cohort had an incidence of 3.3% at the equivalent time, and none of these were due to osteolysis or wear-related events. CONCLUSIONS: There is a concerning midterm failure rate related to ultra-high-molecular-weight-polyethylene wear-induced osteolysis in the M6-C. Patients implanted with the M6-C prosthesis should be contacted, informed, and clinically and radiologically assessed.

Are we 'gritty' enough? The importance of 'grit' in O&G training: Association of passion and perseverance with burnout, thriving and career progression.

BACKGROUND: Objective assessment of grit and its association with burnout in obstetrics and gynaecology (O&G) training is underexplored. AIM: This study utilises the Short Grit Scale and the Oldenburg Burnout Inventory to investigate the association of grit with burnout, thriving and career progression among O&G trainees and Fellows in Australia/New Zealand. MATERIALS AND METHODS: A cross-sectional survey of the RANZCOG (Royal Australian and New Zealand College of Obstetricians and Gynaecologists) members was conducted. Participants were categorised by seniority level (core trainees, advanced trainees and Fellows). Mean grit and burnout scores were compared with one-way analyses of variance. Correlation between grit and burnout was estimated using Pearson's correlation coefficient. Logistic regression models were used to determine factors associated with high vs low burnout. Grit was categorised as low/medium/high for regression models. RESULTS: A total of 751 (26%) participants completed the survey. Fellows reported higher mean grit than core (P = 0.02) and advanced trainees (P = 0.03), and lower mean burnout than core trainees (P < 0.001). Moderate negative correlation was demonstrated between grit and burnout scores (r = -0.34). In the multivariable model, only seniority (adjusted adds ratio (OR): 0.40 for Fellows vs core trainees, P = 0.008) and grit levels (adjusted OR:4.52 for low versus high, P < 0.001; 2.32 for low vs medium, P = 0.001) were significantly associated with burnout. CONCLUSION: This study demonstrates the protective role of grit in combating burnout among RANZCOG trainees and Fellows. While further well-designed studies are warranted, findings from our study are expected to help the College in developing targeted interventions and subsequently minimise burnout-related adverse outcomes in high-risk groups.

Comparison of Mid- to Long-term Follow-up of Patient-reported Outcomes Measures After Single-level Lumbar Total Disc Arthroplasty, Multi-level Lumbar Total Disc Arthroplasty, and the Lumbar Hybrid Procedure for the Treatment of Degenerative Disc Disease.

STUDY DESIGN: Prospective cohort study. OBJECTIVE: The aim of this article is to compare the mid- to long-term patient-reported outcome measures (PROMs) between single-level total disc arthroplasty (TDA), multi-level TDA, and hybrid constructs (combination of TDA and anterior lumbar interbody fusion [ALIF] across multiple levels) for symptomatic degenerative disc disease (DDD). SUMMARY OF BACKGROUND DATA: The treatment of single-level DDD is well documented using TDA. However, there is still a paucity of published evidence regarding long-term outcomes on multi-level TDA and hybrid constructs for the treatment of multi-level DDD, as well as lack of long-term comparisons regarding treatment of single-level DDD and multi-level DDD. METHODS: A total of 950 patients underwent surgery for single-level or multi-level DDD between July 1998 and February 2012 with single-level TDA (n = 211), multi-level TDA (n = 122), or hybrid construct (n = 617). Visual Analog Score for the back (VAS-B) and leg (VAS-L) were recorded, along with the Oswestry Disability Index (ODI) and Roland Morris Disability Questionnaire (RMDQ). RESULTS: All PROMs in all groups showed statistically and clinically significant improvements (P < 0.005) in pain and function that is well above the corresponding minimum clinically important difference (MCID) and exceeds literature thresholds for substantial clinical benefit (SCB). Unadjusted analyses show that there were no statistically significant differences in the change scores between the surgery groups for VAS back and leg pain, and RMDQ up to 8 years' follow-up. Adjusted analyses showed the ODI improvement score for the single group was 2.2 points better (95% confidence interval [CI]: 0.6-3.9, P = 0.009) than in the hybrid group. The RMDQ change score was better in the hybrid group than in the multi-level group by 1.1 points (95% CI: 0.4-1.9, P = 0.003) at 6 months and a further 0.4 point at 2 years (95% CI: 0.1-0.8, P = 0.011). CONCLUSION: In the setting of meticulous preoperative evaluation in establishing a precision diagnosis, clinically and statistically equivalent results can be achieved when treating symptomatic DDD through single-level TDA, multi-level TDA, and hybrid constructs. These results are sustained at mid- to long-term follow-up.Level of Evidence: 3.

Auditory exostosis in Australian warm water surfers: a cross-sectional study.

BACKGROUND: Surfing is a popular sport in Australia, accounting for nearly 10% of the population. External auditory exostosis (EAE), also referred to as surfer's ear, is recognized as a potentially serious complication of surfing. Cold water (water temperature below 19 °C) is a commonly cited risk factor, with prevalence of EAE in cold water surfers ranging from 61 to 80%. However, there is a paucity of studies reporting the prevalence of EAE in surfers exposed to water temperatures above 19 °C. With mean water temperature ranging from 19 °C to 28 °C, the Gold Coast region of Australia provides the ideal environment to assess the main goal of this study: to assess the prevalence and severity of EAE in warm water surfers. METHODS: Eligible participants were surfers living and surfing on the Gold Coast (Queensland, Australia). Currently active surfers over 18 years of age, surfing year-round, with a minimum of five consecutive years of surfing experience were recruited to participate. Included individuals were asked to complete a questionnaire and underwent bilateral otoscopy. RESULTS: A total of 85 surfers were included, with mean age 52.1 years (standard deviation [SD] ±12.6 years) and mean surfing experience of 35.5 years (SD ±14.7 years). Nearly two-thirds of participants (65.9%) had regular otological symptoms, most commonly water trapping (66%), hearing loss (48.2%), and cerumen impaction (35.7%). Less than one-fifth of the surfers (17.7%) reported regular use of protective equipment for EAE. The overall prevalence of exostosis was 71.8%, with most of the individuals having bilateral lesions (59%) and a mild grade (grade 1, 47.5%). There was insufficient evidence for any significant associations between the main outcomes (presence and severity of EAE) and factors related to age, surfing experience, winter exposure, surfing ability, symptoms, and use of protective equipment. CONCLUSION: To the best of our knowledge, this is the first study assessing EAE in surfers exposed to warm waters (above 19 °C). The prevalence of 71.8% highlights the high prevalence of the condition in the surfing population, regardless of water temperature. Future research should focus on ways to prevent EAE.

Rehabilitation characteristics and patient barriers to and facilitators of ACL reconstruction rehabilitation: A cross-sectional survey.

OBJECTIVES: To investigate patient-reported rehabilitation characteristics and barriers to and facilitators of ACL reconstruction rehabilitation. DESIGN: Survey-based study. SETTING: Online survey platform. PARTICIPANTS: Adults 1-20 years post ACL reconstruction (n = 304). MAIN OUTCOME MEASURES: 1) rehabilitation characteristics, 2) barriers to and facilitators of rehabilitation. RESULTS: Fear of re-injury (43.8%) was the highest rating barrier to rehabilitation adherence, while a good relationship with your rehabilitation provider was regarded as the most important factor (83.6%) in facilitating rehabilitation. Rehabilitation frequency reduced across the duration of rehabilitation from most commonly 1 x week (38.2%) in the first three months to once every month (26%) from 6 to 9 months. Almost all participants (95.7%) consulted a rehabilitation provider for the first six months. Only 43.4% of respondents returned to their previous level of sport. The exploratory analysis identified that low barriers to rehabilitation and a longer duration of supervised rehabilitation are associated with a faster return to sport, greater likelihood of return to previous level of sport and fewer reported ongoing problems with the knee. CONCLUSIONS: This cross-sectional survey provides insight into the patient's experience of rehabilitation practices and a patient's perspective on the key barriers to and facilitators of ACL rehabilitation adherence and participation.

Workplace programmes for supporting breast-feeding: a systematic review and meta-analysis.

OBJECTIVE: To critically review the literature regarding workplace breast-feeding interventions and to assess their impact on breast-feeding indicators. DESIGN: A systematic review and meta-analysis was conducted. Electronic searches for workplace intervention studies to support breast-feeding, without restriction on language or study design, were performed in PubMed, CENTRAL, CINAHL, Embase, Web of Science, Business Source Complete, ProQuest-Sociology and ProQuest-Social Science to 13 April 2020. A meta-analysis of the pooled effect of the programmes on breast-feeding indicators was conducted. RESULTS: The search identified 10 215 articles; fourteen studies across eighteen publications met eligibility criteria. Programmes were delivered in the USA (n 10), Turkey (n 2), Thailand (n 1) or Taiwan (n 1). There were no randomised controlled trials. The pooled OR for exclusive breast-feeding at 3 or 6 months for participants v. non-participants of three non-randomised controlled studies was 3·21 (95 % CI 1·70, 6·06, I2 = 22 %). Despite high heterogeneity, other pooled outcomes were consistently in a positive direction with acceptable CI. Pooled mean duration of breast-feeding for five single-arm studies was 9·16 months (95 % CI 8·25, 10·07). Pooled proportion of breast-feeding at 6 months for six single-arm studies was 0·76 (95 % CI 0·66, 0·84) and breast-feeding at 12 months for three single-arm studies was 0·41 (95 % CI 0·22, 0·62). Most programmes were targeted at mothers; two were targeted at expectant fathers. CONCLUSIONS: Workplace programmes may be effective in promoting breast-feeding among employed mothers and partners of employed fathers. However, no randomised controlled trials were identified, and better-quality research on workplace interventions to improve breast-feeding is needed.

Effects of a 12-Week Cycling Intervention on Successful Aging Measures in Mid-Aged Adults.

Purpose: To compare the effect of 12-weeks of cycling training and competition versus recreational cycling on successful aging across physical, psychological, cognitive, and social functioning domains in mid-aged adults. Methods: Recreational cyclists were randomly assigned to an intervention (n = 13, M age = 47.18 years) and comparison (n = 13, M age = 46.91 years) group. Analysis of Covariance was used on self-reported pre-post data to determine changes across time and differences between groups on outcomes. Results: The intervention group scored higher on the role limitation due to physical problems measure of physical functioning (p = .045) and the social activity measure of social functioning (p = .008) with large effect sizes (ηp 2 > .14). The remaining physical, psychological, cognitive, and social functioning measures were not significantly different (p > .05) between groups with small to medium effect sizes (ηp 2 > .01 to ≤ .06). Conclusion: Cycling training and competition promotes better physical and social functioning than recreational cycling. This finding indicates that an intervention that incorporates the training and competition aspects of sport may promote positive outcomes that are above and beyond those that can be gained from participation in recreational physical activity. Objective measurements on larger samples across a broader range of sports are required to confirm and extend these findings.

Clinical Outcomes of Cervical Hybrid Reconstructions: A Prospective Study.

BACKGROUND: The study design was a prospective clinical cohort study. The aim of this study was to assess the patient-reported outcome measures (PROMs), patient satisfaction, as well as complication and reoperation rate of cervical hybrid procedures for symptomatic cervical multilevel degenerative disc disease (MLDDD). Cervical total disc replacement (CTDR) has been shown to be safe and effective for the treatment of degenerative pathologies. However, there is minimal PROMs data on the outcomes of combined CTDR and anterior cervical decompression and fusion procedures, commonly referred to as cervical hybrid surgery. METHODS: Prospectively collected PROMs were analyzed from patients receiving cervical hybrid surgery for symptomatic cervical MLDDD. Between 2004 and 2016, data were collected preoperatively and postoperatively at 3, 6, and 12 months, then yearly thereafter. Patient reported outcome measures included patient satisfaction, visual analog score for neck and arm, and Neck Disability Index. Complication and reoperation rates were also assessed. RESULTS: A total of 151 patients (80 males, 71 females) who had a minimum of 12 months follow up were included. The mean age was 53 years (range = 24-81), and median follow up was 2 years (range = 1-10). The median number of levels treated was 3, with 29.8%, 49.0%, and 21.2% of patients having 2, 3, and 4 levels treated, respectively. The most common indication for surgery was multilevel cervical spondylotic radiculopathy (52.8%), followed by combined cervical spondylotic radiculomyelopathy (16.7%), axial neck pain (16%), and cervical spondylotic myelopathy (13.9%). Improvement in pain and disability scores were both clinically and statistically significant (P < .001), and these improvements were sustained throughout the course of follow up. There was a 16% incidence of minor adverse events, and 3 (1.9%) reoperations. CONCLUSIONS: Cervical hybrid surgery for cervical MLDDD demonstrates favorable and sustained clinical outcomes at short-term to midterm follow up. LEVEL OF EVIDENCE: 4. CLINICAL RELEVANCE: Statistically and substantial clinical benefits can be achieved by cervical hybrid surgery, in the treatment of cervical pathologies including radiculopathy and myelopathy. The key principles is to follow strict indications, and to match technology with the pathology.

Intrinsic patient factors predictive of inpatient rehabilitation facility discharge following primary total knee arthroplasty: a systematic review and meta-analysis.

BACKGROUND: Total Knee Arthroplasty (TKA) reduces pain and improves function in those suffering from severe osteoarthritis. A significant cost of TKA is post-acute care, however, current evidence suggests that discharge to an Inpatient Rehabilitation Facility (IRF) has inferior outcomes to home discharge, with no greater benefit in physical function. Only individual studies have investigated TKA patient characteristics predictive of discharge destination, therefore, the aim is to systematically review the literature and meta-analyse intrinsic patient factors predictive of IRF discharge. If predictive factors are known, then early discharge planning and intervention strategies could be implemented. METHODS: Databases PubMed, CINAHL, Embase, Cochrane, and Pedro were searched up to October 2019 for all studies investigating pre-operative intrinsic patient factors predictive of IRF discharge. For assessing the methodological quality of included studies, the Quality In Prognosis Studies (QUIPS) tool was used. Statistical analysis and graphical reporting were conducted in R statistical software. To assess the effect of predictors of discharge destination, odds ratios with the corresponding 95%CI were extracted from the results of univariate and multivariable analyses. RESULTS: A total of 9 articles published between 2011 to 2018 with 218,151 TKA patients were included. Of the 13 intrinsic patient factors reported, 6 met the criteria for synthesised review: age, obesity, comorbidity, gender, SF-12/VR-12 survey, and smoking. Due to the heterogeneity of statistical analysis and reporting 2 variables could undergo meta-analysis, gender and smoking. Female gender increased the likelihood of IRF discharge by 78% (OR = 1.78; 95%CI = 1.43-2.20; I2 = 33.3%), however, the relationship between smoking status and discharge destination was less certain (OR = 0.80; 95%CI = 0.42-1.50; I2 = 68.5%). CONCLUSION: In this systematic literature review and meta-analysis female gender was shown to be predictive of IRF discharge after total knee arthroplasty. There was also a trend for those of older age and increased comorbidity, as measured by the Charlson Comorbidity Index, or the severely obese to have an increased likelihood of IRF discharge. The marked heterogeneity of statistical methods and reporting in existing literature made pooled analysis challenging for intrinsic patient factors predictive of IRF discharge after TKA. Further, high quality studies of prospective design on predictive factors are warranted, to enable early discharge planning and optimise resource allocation on post-acute care following TKA. TRIAL REGISTRATION: This review was registered with PROSPERO ( CRD42019134422 ).

The prediction of swim start performance based on squat jump force-time characteristics.

BACKGROUND: Depending on the stroke and distances of the events, swim starts have been estimated to account for 0.8% to 26.1% of the overall race time, with the latter representing the percentage in a 50 m sprint front crawl event (Cossor & Mason, 2001). However, it is still somewhat unclear what are the key physiological characteristics underpinning swim start performance. The primary aim of this study was to develop a multiple regression model to determine key lower body force-time predictors using the squat jump for swim start performance as assessed by time to 5 m and 15 m in national and international level swimmers. A secondary aim was to determine if any differences exist between males and females in jump performance predictors for swim start performance. METHODS: A total of 38 males (age 21 ±  3.1 years, height 1.83 ±  0.08 m, body mass 76.7 ±  10.2 kg) and 34 females (age 20.1 ±  3.2 years, height 1.73 ±  0.06 m, body mass 64.8 ±  8.4 kg) who had competed at either an elite (n = 31) or national level (n = 41) participated in this study. All tests were performed on the same day, with participants performing three bodyweight squat jumps on a force platform, followed by three swim starts using their main swimming stroke. Swim start performance was quantified via time to 5 m and 15 m using an instrumented starting block. RESULTS: Stepwise multiple linear regression with quadratic fitting identified concentric impulse and concentric impulse2 as statistically significant predictors for time to 5 m (R 2 = 0.659) in males. With time to 15 m, concentric impulse, age and concentric impulse2 were statistically significant predictors for males (R 2 = 0.807). A minimum concentric impulse of 200-230 N.s appears required for faster times to 5 m and 15 m, with any additional impulse production not being associated with a reduction in swim start times for most male swimmers. Concentric impulse, Reactive strength index modified and concentric mean power were identified as statistically significant predictors for female swimmers to time to 5 m (R 2 = 0.689). Variables that were statistically significant predictors of time to 15 m in females were concentric impulse, body mass, concentric rate of power development and Reactive strength index modified (R 2 = 0.841). DISCUSSION: The results of this study highlight the importance of lower body power and strength for swim start performance, although being able to produce greater than 200 or 230 N.s concentric impulse in squat jump did not necessarily increase swim start performance over 5 m and 15 m, respectively. Swimmers who can already generate greater levels of concentric impulse may benefit more from improving their rate of force development and/or technical aspects of the swim start performance. The sex-related differences in key force-time predictors suggest that male and female swimmers may require individualised strength and conditioning programs and regular monitoring of performance.

Which Patient Factors Best Predict Discharge Destination After Primary Total Knee Arthroplasty? The ARISE Trial.

BACKGROUND: The role of inpatient rehabilitation after total knee arthroplasty (TKA) remains uncertain, with evidence suggesting no better functional outcomes for those who discharge to rehabilitation to those who discharge home. The aim of this study is to develop and implement a pre-operative predictive tool, ARISE (Arthroplasty Rehabilitation Initial Screening Evaluation), that incorporated psychological, functional, and socio-demographic factors to determine discharge destination. METHODS: One week prior to TKA, the ARISE tool was administered to 100 patients, in addition to an EQ-5D-5L survey and other demographic data being recorded. The primary outcome was discharge destination. An enhanced recovery pathway, which included an anesthetic protocol designed to optimize early mobilization, was utilized. Univariable and multivariable logistic regression analysis was performed to determine the likelihood of discharge destination. RESULTS: Patients in the rehabilitation group were, on average, 4.5 years older than the home group (P = .036). After multivariable regression, ARISE questions were predictive of discharge destination related to beliefs around the superiority of inpatient rehabilitation (odds ratio = 9.9 [2.6-37.9]) and post-discharge level of support (odds ratio = 6.3 [1.5-26.8]). No question around self-reported physical function was predictive. CONCLUSION: Pre-operative patient beliefs regarding rehabilitation and future home support are highly predictive of discharge destination after primary TKA. Pre-operative patient-reported functional status and demographic variables, with the exception of increasing age, were not shown to be predictive. Predicting those that are most likely to discharge to rehabilitation allows for early, targeted interventions to optimize resources and increase likelihood of home discharge.

A prospective quasi-experimental controlled study evaluating the use of dynamic elastomeric fabric orthoses to manage common postpartum ailments during postnatal care.

OBJECTIVE: To evaluate the effectiveness of a postnatal dynamic elastomeric fabric orthoses to manage postpartum pain, improve functional capacity and enhance the quality of life arising from postnatal ailments immediately to an 8-week postpartum, compared with patients who did not wear dynamic elastomeric fabric orthoses. METHOD: A total of 51 postpartum women were recruited (day 0 to 10 days post-delivery) from hospitals and community-based health clinics to participate in a prospective quasi-experimental controlled study using parallel groups without random allocation. The subgroup of the compression shorts group wore SRC recovery shorts and received standard postnatal care. The comparison group received standard postnatal care alone. Wear compliance was monitored throughout the study. Primary outcome measure, Numeric Pain Rating Scale, and secondary outcome measures, Roland Morris Disability Questionnaire, Pelvic Floor Impact Questionnaire-7, and Short Form (SF-36) were assessed fortnightly over 8 weeks for both groups. RESULTS: The compression shorts group reported a larger reduction in mean (SD) Numeric Pain Rating Scale score (-3.09 (2.20)) from baseline to 8 weeks, compared to the comparison group (-2.00 (1.41)). However, there was insufficient evidence of a statistical difference in Numeric Pain Rating Scale score at 8 weeks when comparing the compression shorts group and comparison group (-1.17; 95%CI: (-2.35, -0.01), R2 = .19, p = .050). The compression shorts group met the wear compliance of the dynamic elastomeric fabric orthoses and reported an average wear of the dynamic elastomeric fabric orthoses as 9 out of 14 days for 11 h per day (SD 4.8 h) between the fortnightly timepoints. CONCLUSION: The use of dynamic elastomeric fabric orthoses may be considered during postnatal care as a non-pharmacological therapeutic intervention to manage pain resulting from common postpartum ailments. While the dynamic elastomeric fabric orthoses was clinically well accepted by participants with high wearing compliance, future research with larger population samples are needed to enable statistical conclusions on the effectiveness of a dynamic elastomeric fabric orthoses in postnatal care to be made. REGISTRATION: Trial registration was not required as per the Australian Government Department of Health, Therapeutic Goods Administration.