Risk Factors Associated with First Time and Recurrent Shoulder Instability: A Systematic Review.

Background: Shoulder instabilities constitute a large proportion of shoulder injuries and have a wide range of presentations. While evidence regarding glenohumeral dislocations and associated risk factors has been reported, less is known regarding the full spectrum of instabilities and their risk factors. Purpose: The purpose of this systematic review was to identify modifiable risk factors to guide patient management decisions with regards to implementation of interventions to prevent or reduce the risk of shoulder instability. Study Design: Systematic Review. Methods: A systematic, computerized search of electronic databases (CINAHL, Cochrane, Embase, PubMed, SportDiscus, and Web of Science) was performed. Inclusion criteria were: (1) a diagnosis of shoulder instability (2) the statistical association of at least one risk factor was reported, (3) study designs appropriate for risk factors, (4) written in English, and (5) used an acceptable reference standard for diagnosed shoulder instability. Titles and abstracts were independently screened by at least two reviewers. All reviewers examined the quality studies using the Newcastle-Ottawa Scale (NOS). At least two reviewers independently extracted information and data regarding author, year, study population, study design, criterion standard, and strength of association statistics with risk factors. Results: Male sex, participation in sport, hypermobility in males, and glenoid index demonstrated moderate to large risk associated with first time shoulder instability. Male sex, age \<30 years, and history of glenohumeral instability with concomitant injury demonstrated moderate to large risk associated with recurrent shoulder instability. Conclusion: There may be an opportunity for patient education in particular populations as to their increased risk for suffering shoulder instability, particularly in young males who appear to be at increased risk for recurrent shoulder instability. Level of Evidence: Level III.

Evaluation and students' perception of a health equity education program in physical therapy: a mixed methods pilot study.

BACKGROUND: Health equity is a common theme discussed in health professions education, yet only some researchers have addressed it in entry-level education. PURPOSE: The purpose of this study is to serve as an educational intervention pilot to 1) evaluate students' perception of the effectiveness of the DPT program in providing a foundation for health equity education, with or without the benefit of a supplemental resource and 2) establishing priorities for the program related to educating students on health inequities in physical therapy clinical practice. A mixed method design with a focus-group interview was utilized to explore students' perceptions of the DPT program's commitment to advancing health equity. METHODS: A three-staged sequential mixed methods study was conducted. Stage 1 began with quantitative data collection after completing the DEI Bundle utilizing the Tripod DEI survey. Stage 2 involved identifying themes from the Tripod Survey data and creating semi-structured interview questions. Stage 3 consisted of a focus group interview process. RESULTS: A total of 78 students completed the Tripod DEI survey upon completing 70% of the curriculum. Thirty-five students, eight core faculty, 13 associated faculty, and four clinical instructors completed the APTA DEI Bundle Course Series. According to the Tripod DEI Survey results, program stakeholders found the program's commitment to DEI and overall climate to be inclusive, fair, caring, safe, welcoming, and understanding of individuals from different backgrounds, including a sense of student belonging where students feel valued and respected. Three themes emerged from the qualitative focus group interviews, including the value of inclusivity, health equity curricular foundations, and DEI in entry-level DPT education. CONCLUSIONS: This study highlights the value of incorporating health equity and DEI topics into curricula while fostering an incluse program culture.

Operative Management for Anterior Cruciate Ligament Injury in Patients Over 40 Years Old Yields Increased Clinical Outcome: A Systematic Review.

PURPOSE: To evaluate outcomes of anterior cruciate ligament (ACL) rupture in patients ≥40 years treated nonoperatively or with ACL reconstruction (ACLR). METHODS: A review of MEDLINE, CINAHL, SportDiscus, Embase, Web of Science, and Cochrane databases from inception to June 1, 2021, was performed to identify randomized controlled trials, prospective or retrospective cohorts, case controls, or case series that met the following criteria: English-language studies reporting at least one subjective and/or objective outcome measure in ACL rupture patients ≥40 years treated nonoperatively or by ACLR. No limits were placed on graft type, time-to-surgery/follow-up, or concomitant procedures. Variability in patient-reported outcome scores, including subjective IKDC score, Lysholm score, Tegner activity score, and Knee Injury and Osteoarthritis Outcome Score, was assessed to evaluate the utility of applying previously established clinically meaningful thresholds to pooled outcome data. RESULTS: 12,605 citations were identified using screening criteria. Sixty studies satisfied criteria following full-text review. As previous systematic reviews reported on earlier literature evaluating ACLR outcomes in patients ≥40 years, studies in this review were limited to include only those published in the last 10 years (40 studies). An additional 16 studies were excluded based on aims of the review not identified during initial screen. Although preoperative to postoperative population-based improvements in Lysholm score, Tegner score, and IKDC score surpassed minimal clinically important differences (MCID) in at least 50% of studies, the variability present in the pooled data may limit its application. No studies evaluated nonoperative outcomes. CONCLUSIONS: Evidence supports operative management in patients ≥40 years, as studies generally demonstrated preoperative to postoperative improvements in clinical outcomes based on population-level changes. However, application of patient-level clinically relevant thresholds to pooled outcome data should be undertaken with caution as reporting of population-based outcome scores may not accurately reflect changes in individual patients. LEVEL OF EVIDENCE: Systematic review, IV.

Impact of COVID-19 on cardiac autonomic function in healthy young adults: potential role of symptomatology and time since diagnosis.

Emerging evidence suggests that COVID-19 may affect cardiac autonomic function; however, the limited findings in young adults with COVID-19 have been equivocal. Notably, symptomology and time since diagnosis appear to influence vascular health following COVID-19, but this has not been explored in the context of cardiac autonomic regulation. Therefore, we hypothesized that young adults who had persistent symptoms following COVID-19 would have lower heart rate variability (HRV) and cardiac baroreflex sensitivity (BRS) compared with those who had COVID-19 but were asymptomatic at testing and controls who never had COVID-19. Furthermore, we hypothesized that there would be relationships between cardiac autonomic function measures and time since diagnosis. We studied 27 adults who had COVID-19 and were either asymptomatic (ASYM; n = 15, 6 females); 21 ± 4 yr; 8.4 ± 4.0 wk from diagnosis) or symptomatic (SYM; n = 12, 9 females); 24 ± 3 yr; 12.3 ± 6.2 wk from diagnosis) at testing, and 20 adults who reported never having COVID-19 (24 ± 4 yr, 11 females). Heart rate and beat-to-beat blood pressure were continuously recorded during 5 min of rest to assess HRV and cardiac BRS. HRV [root mean square of successive differences between normal heartbeats (RMSSD); control, 73 ± 50 ms; ASYM, 71 ± 47 ms; and SYM, 84 ± 45 ms; P = 0.774] and cardiac BRS (overall gain; control, 22.3 ± 10.1 ms/mmHg; ASYM, 22.7 ± 12.2 ms/mmHg; and SYM, 24.3 ± 10.8 ms/mmHg; P = 0.871) were not different between groups. However, we found correlations with time since diagnosis for HRV (e.g., RMSSD, r = 0.460, P = 0.016) and cardiac BRS (overall gain, r = 0.470, P = 0.014). These data suggest a transient impact of COVID-19 on cardiac autonomic function that appears mild and unrelated to persistent symptoms in young adults.NEW & NOTEWORTHY The potential role of persistent COVID-19 symptoms on cardiac autonomic function in young adults was investigated. We observed no differences in heart rate variability or cardiac baroreflex sensitivity between controls who never had COVID-19 and those who had COVID-19, regardless of symptomology. However, there were significant relationships between measures of cardiac autonomic function and time since diagnosis, suggesting that COVID-19-related changes in cardiac autonomic function are transient in young, otherwise healthy adults.

Reliability and validity of 2-dimensional video analysis for a running task: A systematic review.

OBJECTIVE: Evaluate the reliability and validity of 2-dimensional (2D) video-based motion analysis during running. METHODS: A systematic search of MEDLINE, Cochrane Library, EMBASE, CINAHL, PEDro, SPORTDiscus, and IEEE Xplore was conducted in March 2020 and updated in May 2021. We included studies assessing reliability and/or validity of 2D video-based motion analysis (gold standard: 3D motion analysis) during running. RESULTS: 11 studies (251 runners; mean age range: 18.7-37.0 years; 57.4% female; 63.7% injury-free) met inclusion criteria. Eight studies examined kinematics of the pelvis/hip, eight of the knee, and six of the ankle/foot. Low-to-moderate risk of bias was present in all studies. Heterogeneous study designs, measurement methods, and statistical approaches across studies precluded statistical synthesis. Intrarater reliability [Interclass correlation coefficient (ICC) range: 0.56-1.00; kappa range: 0.49-0.81] was better than interrater reliability (ICC range: 0.31-1.00; kappa range 0.00-0.85). ICC values for validity were poor to good (0.06-0.89). One study examining foot strike pattern found good to excellent validity (using Gwet AC statistics) when movement kinematics were categorized. CONCLUSIONS: A wide range of methods were reported in 2D video-based motion analysis of joint angular kinematics during a running task. Further research to develop standardized 2D video-based motion analysis for running is needed. Categorizing movement patterns may be more useful than angularly quantifying joint kinematics.

Impact of breakthrough COVID-19 cases during the omicron wave on vascular health and cardiac autonomic function in young adults.

We and others have previously shown that COVID-19 results in vascular and autonomic impairments in young adults. However, the newest variant of COVID-19 (Omicron) appears to have less severe complications. Therefore, we investigated whether recent breakthrough infection with COVID-19 during the Omicron wave impacts cardiovascular health in young adults. We hypothesized that measures of vascular health and indices of cardiac autonomic function would be impaired in those who had the Omicron variant of COVID-19 when compared with controls who never had COVID-19. We studied 23 vaccinated adults who had COVID-19 after December 25, 2021 (Omicron; age, 23 ± 3 yr; 14 females) within 6 wk of diagnosis compared with 13 vaccinated adults who never had COVID-19 (age, 26 ± 4 yr; 7 females). Macro- and microvascular function were assessed using flow-mediated dilation (FMD) and reactive hyperemia, respectively. Arterial stiffness was determined as carotid-femoral pulse wave velocity (cfPWV) and augmentation index (AIx). Heart rate (HR) variability and cardiac baroreflex sensitivity (BRS) were assessed as indices of cardiac autonomic function. FMD was not different between control (5.9 ± 2.8%) and Omicron (6.1 ± 2.3%; P = 0.544). Similarly, reactive hyperemia (P = 0.884) and arterial stiffness were not different between groups (e.g., cfPWV; control, 5.9 ± 0.6 m/s and Omicron, 5.7 ± 0.8 m/s; P = 0.367). Finally, measures of HR variability and cardiac BRS were not different between groups (all, P > 0.05). Collectively, these data suggest preserved vascular health and cardiac autonomic function in young, otherwise healthy adults who had breakthrough cases of COVID-19 during the Omicron wave.NEW & NOTEWORTHY We show for the first time that breakthrough cases of COVID-19 during the Omicron wave does not impact vascular health and cardiac autonomic function in young adults. These are promising results considering earlier research showing impaired vascular and autonomic function following previous variants of COVID-19. Collectively, these data demonstrate that the recent Omicron variant is not detrimental to cardiovascular health in young, otherwise healthy, vaccinated adults.

Individualized Exercise Prescription for Athletes Using a Construct-Based Model.

Rehabilitation professionals prescribe exercise regularly with the goals of decreasing pain, increasing function, and returning athletes to competition. To maximize the effect of an exercise intervention, the program must be individualized and in context for the athlete considering biopsychosocial aspects of care. Current models of exercise prescription may not be ideal considering that less than 50% of injured athletes return to their pre-injury level. Advice on exercise prescription has been offered in the past, but the paradigms are either not user friendly or user friendly but linear, based on phases of recovery. As such, there is a need for a more flexible exercise prescription paradigm that should improve the individuality of exercise prescription. In this Current Opinion, we offer a user-friendly construct-oriented paradigm designed to facilitate the creation of individualized exercise programs for athletes.

Implementing the 27 PRISMA 2020 Statement items for systematic reviews in the sport and exercise medicine, musculoskeletal rehabilitation and sports science fields: the PERSiST (implementing Prisma in Exercise, Rehabilitation, Sport medicine and SporTs science) guidance.

Poor reporting of medical and healthcare systematic reviews is a problem from which the sports and exercise medicine, musculoskeletal rehabilitation, and sports science fields are not immune. Transparent, accurate and comprehensive systematic review reporting helps researchers replicate methods, readers understand what was done and why, and clinicians and policy-makers implement results in practice. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement and its accompanying Explanation and Elaboration document provide general reporting examples for systematic reviews of healthcare interventions. However, implementation guidance for sport and exercise medicine, musculoskeletal rehabilitation, and sports science does not exist. The Prisma in Exercise, Rehabilitation, Sport medicine and SporTs science (PERSiST) guidance attempts to address this problem. Nineteen content experts collaborated with three methods experts to identify examples of exemplary reporting in systematic reviews in sport and exercise medicine (including physical activity), musculoskeletal rehabilitation (including physiotherapy), and sports science, for each of the PRISMA 2020 Statement items. PERSiST aims to help: (1) systematic reviewers improve the transparency and reporting of systematic reviews and (2) journal editors and peer reviewers make informed decisions about systematic review reporting quality.

Do ACL Injury Risk Reduction Exercises Reflect Common Injury Mechanisms? A Scoping Review of Injury Prevention Programs.

CONTEXT: Anterior cruciate ligament (ACL) injury risk reduction programs have become increasingly popular. As ACL injuries continue to reflect high incidence rates, the continued optimization of current risk reduction programs, and the exercises contained within them, is warranted. The exercises must evolve to align with new etiology data, but there is concern that the exercises do not fully reflect the complexity of ACL injury mechanisms. It was outside the scope of this review to address each possible inciting event, rather the effort was directed at the elements more closely associated with the end point of movement during the injury mechanism. OBJECTIVE: To examine if exercises designed to reduce the risk of ACL injury reflect key injury mechanisms: multiplanar movement, single limb stance, trunk and hip dissociative control, and a flight phase. DATA SOURCES: A systematic search was performed using PubMed, Medline, EBSCO (CINAHL), SPORTSDiscus, and PEDro databases. STUDY SELECTION: Eligibility criteria were as follows: (1) randomized controlled trials or prospective cohort studies, (2) male and/or female participants of any age, (3) exercises were targeted interventions to prevent ACL/knee injuries, and (4) individual exercises were listed and adequately detailed and excluded if program was unable to be replicated clinically. STUDY DESIGN: Scoping review. LEVEL OF EVIDENCE: Level 4. DATA EXTRACTION: A total of 35 studies were included, and 1019 exercises were extracted for analysis. RESULTS: The average Consensus on Exercise Reporting Template score was 11 (range, 0-14). The majority of exercises involved bilateral weightbearing (n = 418 of 1019; 41.0%), followed by single limb (n = 345 of 1019; 33.9%) and nonweightbearing (n = 256 of 1019; 25.1%). Only 20% of exercises incorporated more than 1 plane of movement, and the majority of exercises had sagittal plane dominance. Although 50% of exercises incorporated a flight phase, only half of these also involved single-leg weightbearing. Just 16% of exercises incorporated trunk and hip dissociation, and these were rarely combined with other key exercise elements. Only 13% of exercises challenged more than 2 key elements, and only 1% incorporated all 4 elements (multiplanar movements, single limb stance, trunk and hip dissociation, flight phase) simultaneously. CONCLUSION: Many risk reduction exercises do not reflect the task-specific elements identified within ACL injury mechanisms. Addressing the underrepresentation of key elements (eg, trunk and hip dissociation, multiplanar movements) may optimize risk reduction in future trials.

Effectiveness of cervicothoracic and thoracic manual physical therapy in managing upper quarter disorders - a systematic review.

STUDY DESIGN: Systematic review. BACKGROUND: Physical therapists often use cervicothoracic and thoracic manual techniques to treat musculoskeletal disorders of the upper quarter ,however, the overall effectiveness of this approach remains to be elucidated. OBJECTIVE: This systematic review explored studies that examined the short- and long-term effectiveness of manual physical therapy directed at the cervicothoracic and thoracic region in the management of upper quarter musculoskeletal conditions. METHODS: The electronic databases MEDLINE, AMED, CINAHL, and Embase were searched from their inception through 30 October 2020. Eligible clinical trials included those where human subjects treated with cervicothoracic and/or thoracic manual procedures were compared with a control group or other interventions. The methodological quality of individual studies was assessed using the PEDro scale. RESULTS: The initial search returned 950 individual articles. After the screening of titles and abstracts, full texts were reviewed by two authors, with 14 articles determined to be eligible for inclusion. PEDro scores ranged from 66 to 10 (out of a maximum score of 10). In the immediate to 52-week follow-up period, studies provided limited evidence that cervicothoracic and thoracic manual physical therapy may reduce pain and improve function when compared to control/sham or other treatments. CONCLUSIONS: Evidence provides some support for the short-termeffectiveness of cervicothoracic and thoracic manual physical therapy in reducing pain and improving function in people experiencing upper quarter musculoskeletal disorders. Evidence is lacking for long-term effectiveness as only two studies explored outcomes beyond 26 weeks and this was for patient-perceived improvement. PROSPERO ID: CRD42020219456.

Five Recommendations to Address the Limitations of Patient-Reported Outcome Measures.

SYNOPSIS: Patient-reported outcome measures (PROMs) are reported by the patient and designed to capture patients' unique perspectives of their symptoms, quality of life, function, disability, and overall health status. Despite their important role in the health care landscape, it is important to recognize that PROMs have numerous shortcomings. These include weaknesses in the development of tools and interpretation of scale values, which can lead to variable patient reporting and dissimilarities in study results, potentially influencing the effectiveness of findings. This Viewpoint makes recommendations for how to interpret and best use PROMs, in spite of their shortcomings. J Orthop Sports Phys Ther 2021;51(12):562-565. Epub 16 Nov 2021. doi:10.2519/jospt.2021.10836.

Are We Able to Determine Differences in Outcomes Between Male and Female Servicemembers Undergoing Hip Arthroscopy? A Systematic Review.

BACKGROUND: Female servicemembers sustain higher rates of lower extremity injuries as compared with their male counterparts. This can include intra-articular pathology in the hip. Female patients are considered to have worse outcomes after hip arthroscopy for femoroacetabular impingement and for hip labral repair. PURPOSE: To (1) compare published rates of hip arthroscopy between male and female military servicemembers and (2) determine if there are any sex-based differences in outcomes after hip arthroscopy in the military. STUDY DESIGN: Systematic review; Level of evidence, 3. METHODS: We reviewed the literature published from January 1, 2000, through December 31, 2020, to identify studies in which hip arthroscopy was performed in military personnel. Clinical trials and cohort studies were included. The proportion of women within each cohort was identified, and results of any between-sex analyses were reported. RESULTS: Identified were 11 studies that met established criteria. Studies included 2481 patients, 970 (39.1%) of whom were women. Surgery occurred between January 1998 and March 2018. Despite women accounting for approximately 15% of the active-duty military force, they represented 39.1% (range, 25.7%-57.6%) of patients undergoing hip arthroscopy. In most cases, there were no differences in self-reported outcomes (pain, disability, and physical function), return to duty, or medical disability status based on sex. CONCLUSION: Women account for approximately 15% of the military, but they made up 40% of patients undergoing hip arthroscopy. Outcomes were not different between the sexes; however, definitive conclusions were limited by the heterogeneity of outcomes, missing data, lack of sex-specific subgroup analyses, and zero studies with sex differences as the primary outcome. A proper understanding of sex-specific outcomes after hip arthroscopy will require a paradigm shift in the design and reporting of trials in the military health system.

Effectiveness of shoulder injury prevention programs in an overhead athletic population: A systematic review.

OBJECTIVE: To analyze the effectiveness of shoulder injury prevention programs in overhead athletes. DESIGN: Systematic Review. METHODS: CINAHL, Embase, PubMed, and SPORTDiscus electronic databases were searched from database inception through December 2020 for randomized controlled or prospective cohort studies that implemented shoulder injury prevention programs in overhead athletes and reported shoulder injury incidence rates. RESULTS: Seven studies fulfilled the inclusion criteria. Two studies reported on odds ratios (OR) that resulted in a reduction of shoulder injuries in overhead athletes following shoulder strengthening and flexibility exercises (OR, 0.72; 95% CI; 0.52, 0.98; OR, 0.22; 95% CI; 0.06, 0.75). One study reported on hazard ratio (HR) that resulted in a reduction of shoulder injuries following stretching of the posterior capsule (HR, 0.36; 95% CI; 0.13, 0.95). CONCLUSION: There is limited research surrounding the effectiveness of shoulder injury prevention programs in overhead athletes specific to injury reduction. Only three studies reported a favorable effect in terms of injury prevention, with only one study at low risk of bias. At present, no conclusions can be made regarding the effectiveness of shoulder injury prevention programs in the overhead athlete.

Diagnostic Accuracy of Patient History in the Diagnosis of Hip-Related Pain: A Systematic Review.

OBJECTIVE: To investigate the diagnostic accuracy of patient history associated with hip pain. DATA SOURCES: A systematic, computerized search of electronic databases (PubMed, MEDLINE, Cumulative Index of Nursing and Allied Health Literature, and Web of Science), a search of the gray literature, and review of the primary author's personal library was performed. Hip-specific search terms were combined with diagnostic accuracy and subjective or self-report history-based search terms using the Boolean operator "AND." STUDY SELECTION: This systematic review was conducted and reported according to the protocol outlined by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The inclusion criteria were: (1) patients with hip pain; (2) the statistical association of at least 1 patient history item was reported; (3) study designs appropriate for diagnostic accuracy; (4) adults aged ≥18 years; (5) written in English; and (6) used an acceptable reference standard for diagnosed hip pathology. Titles and abstracts of all database-captured citations were independently screened by at least 2 reviewers. DATA EXTRACTION: Two reviewers independently extracted information and data regarding author, year, study population, study design, criterion standard, and strength of association statistics associated with the subjective findings. DATA SYNTHESIS: For hip osteoarthritis (OA), a family history of OA (positive likelihood ratio [+LR], 2.13), history of knee OA (+LR, 2.06), report of groin or anterior thigh pain (+LR, 2.51-3.86), self-reported limitation in range of motion of 1 or both hips (+LR, 2.87), constant low back pain or buttock pain (+LR, 6.50), groin pain on the same side (+LR, 3.63), and a screening questionnaire (+LR, 3.87-13.29) were the most significant findings. For intra-articular hip pathology, crepitus (+LR, 3.56) was the most significant finding. CONCLUSIONS: Patient history plays a key role in differential diagnosis of hip pain and in some cases can be superior to objective tests and measures.

Do currently prescribed exercises reflect contributing pathomechanics associated with femoroacetabular impingement syndrome? A scoping review.

OBJECTIVE: Research reports limited, mixed evidence on the effectiveness of physiotherapy management in the treatment of femoroacetabular impingement (FAI) syndrome. The purpose of this review was to (1) identify what therapeutic exercises are being utilized in the non-surgical management of patients with FAI syndrome; (2) map the extent to which reported exercises reflect contributory pathomechanics associated with FAI syndrome. DESIGN: Scoping Review. METHODS: MEDLINE, PubMed, CINAHL, SPORTDiscus, and PEDRO electronic databases were searched for studies that implemented a non-surgical, exercise-based treatment approach in patients with FAI syndrome. Exercises were extracted and analyzed according to elements recognized as contributing to the pathomechanics associated with FAI syndrome. RESULTS: 24 studies fulfilled the inclusion criteria. 453 exercises were extracted. Uniplanar exercises accounted for 338/453 or 74.6% of all reported exercises whereas triplanar exercises accounted for 21/453 or 4.6% of all exercises. Non-weight bearing exercises accounted for 220/453 or 48.6% of all exercises. CONCLUSION: The majority of therapeutic exercises were classified as sagittal, uniplanar exercises, utilizing a concentric exercise approach. These findings highlight that exercises utilizing triplanar, eccentric hip control, in a single limb weightbearing position are considerably underrepresented.

Measurement Properties of the Oswestry Disability Index in Recipients of Lumbar Spine Surgery.

STUDY DESIGN: This is an observational study on the measurement properties of the Oswestry Disability Index (ODI) version 1.0. OBJECTIVES: To (1) determine the construct validity of the tool, specifically structural validity; (2) analyze the criterion validity of the tool, specifically concurrent validity against proxy measures of pain, function, and quality of life and predictive validity of each item to proxy measures of disability; and (3) reliability of the tool, specifically internal consistency. SUMMARY OF BACKGROUND DATA: We endeavored to investigate the measurement properties of the ODI on a spine surgery population to test the assumption that a more disabled population may influence the properties of the tool. METHODS: Data were pulled from the Quality Outcomes Database (QOD) Spine Registry. A total of 57,199 participants who underwent primary or revision lumbar spine surgeries were included. Structural validity was assessed by exploratory and confirmatory factor analysis, concurrent validity, predictive validity by odds ratios, and internal consistency by Cronbach alpha. The Visual Analog Scale for back pain, two standard open questions, and the EuroQol 5 Dimension/Visual Analogue Scale were included as proxy measures of pain, function, and quality of life, respectively. Hospital readmission, return to operating room for treatment and revision surgery (all within 30 days) were included as proxy measures of disability to assess the predictive validity of each ODI item. RESULTS: The ODI demonstrated a two-factor structural solution, which explained 54.9% of the total variance. Fair internal consistency (0.74-0.77), and fair criterion validity (concurrent) and significant findings with predictive validity (P < 0.01) substantiated the use of each item of the ODI as well as the summary score and ODI thresholds. CONCLUSIONS: Our study lends value to a burgeoning repository of evidence that suggests the ODI is a useful tool for capturing outcomes in clinical practice. We recommend its continued use in clinical practice.Level of Evidence: 4.

Do exercises for patellofemoral pain reflect common injury mechanisms? A systematic review.

OBJECTIVES: Current best evidence has reported that therapeutic exercise programs that are designed to treat patellofemoral pain (PFP) should include both hip and knee specific exercises. The purpose of this review was to (1) examine the quality/comprehensiveness of exercise reporting in this field; (2) quantify the extent to which individual exercises comprised task-specific elements (single limb stance; eccentric control of the hip; rotational z-axis control) most likely to address key pathomechanics associated with PFP. DESIGN: Systematic review: a systematic survey of RCTs. METHODS: PubMed, CINAHL, Medline, Physiotherapy Evidence Database (PEDro) and SPORT Discus databases were searched for randomized controlled trials that addressed PFP utilizing a proximal control hip focused rehabilitation paradigm. The therapeutic exercise programs were evaluated, and each individual exercise was extracted for analysis. Quality assessments included the PEDro Scale and the Consensus on Exercise Reporting Template (CERT) was utilized to score the reporting of the interventions. RESULTS: 19 studies were included in the final analysis. 178 total exercises were extracted from the proximal hip and knee rehabilitation programs. The exercises were analyzed for the inclusion of elements that align with reported underlying biomechanical mechanisms. CONCLUSIONS: The vast majority of the exercises were sagittal plane, concentric, non-weight bearing exercises, whereas multiplanar exercises, single limb weightbearing, and exercises where loading was directed around the longitudinal z-axis, were considerably under-represented. Current exercises for PFP utilize simplistic frameworks that lack progression into more task specific exercise, and are not reflective of the complex injury etiology.

FRAMEWORK FOR OPTIMIZING ACL REHABILITATION UTILIZING A GLOBAL SYSTEMS APPROACH.

Knee injuries such as ACL tears commonly occur and there is a high re-injury rate after primary ACL reconstruction with figures estimated at 25%-33%. Clinicians often use hip strengthening as a key component of knee rehabilitation. Evidence suggests that adopting a "regional" or "proximal" approach to rehabilitation can increase hip strength, but motor control often remains unchanged, particularly during more complex tasks such as running and jumping. It has been previously suggested that the current approach to "regional/proximal" rehabilitation is too basic and is constrained by a reductionist philosophy. This clinical commentary provides the clinician a framework for optimizing knee rehabilitation, underpinned by a more global approach. Although this approach remains hip-focused, it can be easily adapted to modify exercise complexity and key loading variables (speed, direction, flight), which will help the clinician to better replicate the sport specific demands on the knee. LEVEL OF EVIDENCE: 5.

Nonoperative Management Prior to Hip Arthroscopy for Femoroacetabular Impingement Syndrome: An Investigation Into the Utilization and Content of Physical Therapy.

BACKGROUND: There has been a significant increase in surgeries for femoroacetabular impingement syndrome in recent years, but little is known about the use of physical therapy prior to surgery. OBJECTIVES: To investigate the use of physical therapy prior to hip arthroscopy for femoroacetabular impingement syndrome, by assessing the number of visits and use of exercise. A secondary objective was to evaluate whether comorbidities prior to surgery were associated with the use of physical therapy. METHODS: In this retrospective observational cohort study, eligible participants between the ages of 18 and 50 years undergoing hip arthroscopy between 2004 and 2013 in the Military Health System were included. Patients were categorized based on whether they saw a physical therapist for their hip in the year prior to surgery. For physical therapy patients, dosing variables were identified, including total number of visits and visits that included an exercise therapy procedure code. RESULTS: Of 1870 participants, 1106 (59.1%) did not see a physical therapist for their hip prior to surgery. For those who did, the median number of visits was 2. Only 220 (11.8%) had 6 or more unique visits with an exercise therapy procedure code. Exercise was coded in 43.4% to 63.0% of the total visits in each individual course of care (mean, 52.3%). There was an association between substance abuse and exercise utilization. No other comorbidities were associated with physical therapy or exercise therapy utilization. CONCLUSION: Physical therapy was not commonly used before undergoing arthroscopic hip surgery by patients seeking care in the Military Health System. Further research is needed to understand the reasons for poor utilization and better define failed nonoperative management. LEVEL OF EVIDENCE: Therapy, level 2b. J Orthop Sports Phys Ther 2019;49(8):593-600. Epub 15 May 2019. doi:10.2519/jospt.2019.8581.

Rethinking Dynamic Knee Valgus and Its Relation to Knee Injury: Normal Movement Requiring Control, Not Avoidance.

The risk of knee injury in sport may be related to deviations in lower-limb alignment. An example of biomechanical deviation is dynamic knee valgus, considered by many to be one of the most important predictors of serious knee injury; however, the predictive validity of commonly used screening tests for dynamic knee valgus has recently been questioned. In this Viewpoint, the authors argue that assessing the risk of knee injury is complex and endeavor to present pelvic pronation and system tension as a 3-D construct to consider during physical assessments and exercise design, and to recognize dynamic knee valgus as a normal and necessary response to ground reaction forces. J Orthop Sports Phys Ther 2019;49(4):216-218. doi:10.2519/jospt.2019.0606.