scholarly journals Validity and Reliability of a Smartphone and Digital Inclinometer in Measuring the Lower Extremity Joints Range of Motion

2021 ◽  
Vol 10 (2) ◽  
pp. 47-52
Author(s):  
Walaa S. Mohammad ◽  
◽  
Faten F. Elattar ◽  
Walaa M. Elsais ◽  
Salameh O. AlDajah ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Range Of Motion ◽  
Sagittal Plane ◽  
Low Cost ◽  
Smart Phone ◽  
Correlation Coefficients ◽  
Plane Motion ◽  
Clinical Settings ◽  
Validity And Reliability ◽  
Digital Inclinometer

In clinical settings, available valid and reliable tools are important components in evaluating the lower extremity range of motion. Although the digital inclinometer is highly reliable compared to the universal goniometer, its availability and high cost impede its extensive use. Nowadays, smartphone applications have become widely available to clinicians for assessing the joint range of motion. The present study aims to assess the validity and intra-rater reliability of the smart- phone application “Clinometer” for measuring hip, knee, and ankle sagittal ranges of motion, using the digital inclinom- eter as the reference standard. Active hip, knee flexion and ankle dorsiflexion and plantarflexion range-of-motion mea- surements were recorded in 102 young, healthy female participants on two separate occasions using Clinometer and a digital inclinometer. Pearson’s correlation coefficients (r) were used to evaluate the smartphone application’s validity against the digital inclinometer. To assess the reliability of the Clinometer app, the intra-class correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable difference (MDD) were used. Clinometer displayed excellent validity when compared to the digital inclinometer for hip and knee movements (r>0.90), while ankle ROM displayed moderate validity (r = 0.52-0.57). Additionally, Clinometer demonstrated excellent reliability (ICC > 0.90) for hip and knee sagittal plane motion and moderate reliability for the ankle sagittal plane motion (ICC = 0.53–0.67). Cli- nometer is a portable, low-cost, valid, and reliable tool for assessing active hip and knee range of motions and can be easily incorporated into clinical settings; however, it cannot be used interchangeably for ankle measures.

The Biomechanics of Lower Extremity Action in Distance Running

Foot & Ankle ◽  
1987 ◽  
Vol 7 (4) ◽  
pp. 197-217 ◽  
Author(s):  
Peter R. Cavanagh
Keyword(s):  
Lower Extremity ◽  
Sagittal Plane ◽  
Plane Motion ◽  
Common Finding ◽  
Distance Running ◽  
Foot Placement ◽  
Running Injuries ◽  
Acceleration Force ◽  
Rearfoot Motion ◽  
Insight Into

The role of quantitative biomechanical measurements in the evaluation of the running patient is discussed. Many techniques are now available to provide insight into the external mechanics of lower extremity action during running, and results from such measurements are presented for symptom-free subjects at distance running speeds. Details of stride length, stride time, and foot placement are first presented followed by a discussion of kinematic data, including stick figures, angle-time graphs, and angle-angle diagrams for the sagittal plane motion of the hip, knee, and ankle joints. The measurement of rearfoot motion, as an approximation of coronal plane subtalar joint movements, is also discussed. Results from acceleration, force, and pressure measurements are considered, and the assertion is made that bilateral asymmetry in many of these measures is a fairly common finding. There are, at present, few reports in the literature of the application of biomechanical techniques to the evaluation of patients with running injuries. It is anticipated that there will be rapid developments in this area in the future and that this will provide considerable insight into the etiology, diagnosis, and treatment of running injuries.

The Effect of the TayCo External Ankle Brace on Multidirectional Reach Distance, Balance, and Motion in Collegiate Athletes

2020 ◽  
Vol 25 (6) ◽  
pp. 323-327
Author(s):  
Steven J. Smith ◽  
Cameron J. Powden
Keyword(s):  
Range Of Motion ◽  
Sagittal Plane ◽  
Dynamic Balance ◽  
Plantar Flexion ◽  
Collegiate Athletes ◽  
Frontal Plane ◽  
Plane Motion ◽  
Lower Extremity Function ◽  
Physically Active ◽  
Ankle Brace

Ensuring ankle stability while allowing for functional movement is important when returning patients to physical activity and attempting to prevent injury. The purpose of this study was to examine the effectiveness of the TayCo external and a lace-up ankle brace on lower extremity function, dynamic balance, and motion in 18 physically active participants. Significantly greater range of motion was demonstrated for the TayCo brace compared with the lace-up brace for dorsiflexion and plantar flexion, as well as less range of motion for the TayCo brace compared to the lace-up brace for inversion and eversion. The TayCo brace provided restricted frontal plane motion while allowing increased sagittal plane motion without impacting performance measures.

scholarly journals Intra- and inter-rater reliability of joint range of motion tests using tape measure, digital inclinometer and inertial motion capturing

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243646
Author(s):  
Laura Fraeulin ◽  
Fabian Holzgreve ◽  
Mark Brinkbäumer ◽  
Anna Dziuba ◽  
David Friebe ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Low Cost ◽  
Inertial Motion ◽  
Rater Reliability ◽  
Warm Up ◽  
Joint Range Of Motion ◽  
Tape Measure ◽  
Digital Inclinometer ◽  
The Right ◽  
Joint Range

Background In clinical practice range of motion (RoM) is usually assessed with low-cost devices such as a tape measure (TM) or a digital inclinometer (DI). However, the intra- and inter-rater reliability of typical RoM tests differ, which impairs the evaluation of therapy progress. More objective and reliable kinematic data can be obtained with the inertial motion capture system (IMC) by Xsens. The aim of this study was to obtain the intra- and inter-rater reliability of the TM, DI and IMC methods in five RoM tests: modified Thomas test (DI), shoulder test modified after Janda (DI), retroflexion of the trunk modified after Janda (DI), lateral inclination (TM) and fingertip-to-floor test (TM). Methods Two raters executed the RoM tests (TM or DI) in a randomized order on 22 healthy individuals while, simultaneously, the IMC data (Xsens MVN) was collected. After 15 warm-up repetitions, each rater recorded five measurements. Findings Intra-rater reliabilities were (almost) perfect for tests in all three devices (ICCs 0.886–0.996). Inter-rater reliability was substantial to (almost) perfect in the DI (ICCs 0.71–0.87) and the IMC methods (ICCs 0.61–0.993) and (almost) perfect in the TM methods (ICCs 0.923–0.961). The measurement error (ME) for the tests measured in degree (°) was 0.9–3.3° for the DI methods and 0.5–1.2° for the IMC approaches. In the tests measured in centimeters the ME was 0.5–1.3cm for the TM methods and 0.6–2.7cm for the IMC methods. Pearson correlations between the results of the DI or the TM respectively with the IMC results were significant in all tests except for the shoulder test on the right body side (r = 0.41–0.81). Interpretation Measurement repetitions of either one or multiple trained raters can be considered reliable in all three devices.

Reliability and validity varies among smartphone apps for range of motion measurements of the lower extremity: a systematic review

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sarah Hahn ◽  
Inga Kröger ◽  
Steffen Willwacher ◽  
Peter Augat
Keyword(s):  
Lower Extremity ◽  
Range Of Motion ◽  
Reliability And Validity ◽  
Knee Extension ◽  
Cochrane Library ◽  
Study Quality ◽  
Smartphone Applications ◽  
Validity And Reliability ◽  
Library Studies ◽  
Baseline Information

Abstract The aim of this review was to determine whether smartphone applications are reliable and valid to measure range of motion (RoM) in lower extremity joints. A literature search was performed up to October 2020 in the databases PubMed and Cochrane Library. Studies that reported reliability or validity of smartphone applications for RoM measurements were included. The study quality was assessed with the QUADAS-2 tool and baseline information, validity and reliability were extracted. Twenty-five studies were included in the review. Eighteen studies examined knee RoM, whereof two apps were analysed as having good to excellent reliability and validity for knee flexion (“DrGoniometer”, “Angle”) and one app showed good results for knee extension (“DrGoniometer”). Eight studies analysed ankle RoM. One of these apps showed good intra-rater reliability and excellent validity for dorsiflexion RoM (“iHandy level”), another app showed excellent reliability and moderate validity for plantarflexion RoM (“Coach’s Eye”). All other apps concerning lower extremity RoM had either insufficient results, lacked study quality or were no longer available. Some apps are reliable and valid to measure RoM in the knee and ankle joint. No app can be recommended for hip RoM measurement without restrictions.

The Effect of Subtalar Arthrodesis Alignment on Ankle Biomechanics

2012 ◽  
Author(s):  
James R. Jastifer ◽  
Peter A. Gustafson ◽  
Robert R. Gorman
Keyword(s):  
Lower Extremity ◽  
Range Of Motion ◽  
Ankle Joint ◽  
Sagittal Plane ◽  
Three Dimensional ◽  
Neutral Position ◽  
Moment Arms ◽  
Subtalar Arthrodesis ◽  
Force Moment ◽  
Ankle Biomechanics

Background: The position, axis, and control of each lower extremity joint intimately affects adjacent joint function as well as whole limb performance. There is little describing the biomechanics of subtalar arthrodesis and none describing the effect that subtalar arthrodesis position has on ankle biomechanics. The purpose of the current study is to establish this effect on sagittal plane ankle biomechanics. Methods: A study was performed utilizing a three-dimensional, validated, computational model of the lower extremity. A subtalar arthrodesis was simulated from 20 degrees of varus to 20 degrees of valgus. For each of these subtalar arthrodesis positions, the ankle dorsiflexor and plantarflexor muscles’ fiber force, moment arm, and moments were calculated throughout a physiologic range of motion. Results: Throughout ankle range of motion, plantarflexion and dorsiflexion strength varies with subtalar arthrodesis position. When the ankle joint is in neutral position, plantarflexion strength is maximized in 10 degrees of subtalar valgus and strength varies by a maximum of 2.6% from the peak 221 Nm. In a similar manner, with the ankle joint in neutral position, dorsiflexion strength is maximized with a subtalar joint arthrodesis in 5 degrees of valgus and strength varies by a maximum of 7.5% from the peak 46.8 Nm. The change in strength is due to affected muscle fiber force generating capacities and muscle moment arms. Conclusion: The clinical significance of this study is that subtalar arthrodesis in a position of 5–10 degrees subtalar valgus has biomechanical advantage. This supports previous clinical outcome studies and offers biomechanical rationale for their generally favorable outcomes.

scholarly journals Lower Extremity Kinematics and Ground Reaction Forces After Prophylactic Lace-Up Ankle Bracing

2008 ◽  
Vol 43 (3) ◽  
pp. 234-241 ◽  
Author(s):  
Lindsay J. DiStefano ◽  
Darin A. Padua ◽  
Cathleen N. Brown ◽  
Kevin M. Guskiewicz
Keyword(s):  
Lower Extremity ◽  
Range Of Motion ◽  
Knee Flexion ◽  
Sagittal Plane ◽  
Control Group ◽  
Ground Contact ◽  
Long Term Effects ◽  
Ankle Motion ◽  
Reaction Forces ◽  
Ankle Bracing

Abstract Context: Long-term effects of ankle bracing on lower extremity kinematics and kinetics are unknown. Ankle motion restriction may negatively affect the body's ability to attenuate ground reaction forces (GRFs). Objective: To evaluate the immediate and long-term effects of ankle bracing on lower extremity kinematics and GRFs during a jump landing. Design: Experimental mixed model (2 [group] × 2 [brace] × 2 [time]) with repeated measures. Setting: Sports medicine research laboratory. Patients or Other Participants: A total of 37 healthy subjects were assigned randomly to either the intervention (n  =  11 men, 8 women; age  =  19.63 ± 0.72 years, height  =  176.05 ± 10.58 cm, mass  =  71.50 ± 13.15 kg) or control group (n  =  11 men, 7 women; age  =  19.94 ± 1.44 years, height  =  179.15 ± 8.81 cm, mass  =  74.10 ± 10.33 kg). Intervention(s): The intervention group wore braces on both ankles and the control group did not wear braces during all recreational activities for an 8-week period. Main Outcome Measure(s): Initial ground contact angles, maximum joint angles, time to reach maximum joint angles, and joint range of motion for sagittal-plane knee and ankle motion were measured during a jump-landing task. Peak vertical GRF and the time to reach peak vertical GRF were assessed also. Results: While participants were wearing the brace, ankle plantar flexion at initial ground contact (brace  =  35° ± 13°, no brace  =  38° ± 15°, P  =  .024), maximum dorsiflexion (brace  =  21° ± 7°, no brace  =  22° ± 6°, P  =  .04), dorsiflexion range of motion (brace  =  56° ± 14°, no brace  =  59° ± 16°, P  =  .001), and knee flexion range of motion (brace  =  79° ± 16°, no brace  =  82° ± 16°, P  =  .036) decreased, whereas knee flexion at initial ground contact increased (brace  =  12° ± 9°, no brace  =  9° ± 9°, P  =  .0001). Wearing the brace for 8 weeks did not affect any of the outcome measures, and the brace caused no changes in vertical GRFs (P > .05). Conclusions: Although ankle sagittal-plane motion was restricted with the brace, knee flexion upon landing increased and peak vertical GRF did not change. The type of lace-up brace used in this study appeared to restrict ankle motion without increasing knee extension or vertical GRFs and without changing kinematics or kinetics over time.

scholarly journals Reliability of 3-Dimensional Measures of Single-Leg Drop Landing Across 3 Institutions: Implications for Multicenter Research for Secondary ACL-Injury Prevention

2015 ◽  
Vol 24 (2) ◽  
pp. 198-209 ◽  
Author(s):  
Gregory D. Myer ◽  
Nathaniel A. Bates ◽  
Christopher A. DiCesare ◽  
Kim D. Barber Foss ◽  
Staci M. Thomas ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Injury Prevention ◽  
Outcome Measures ◽  
Sagittal Plane ◽  
Frontal Plane ◽  
Plane Motion ◽  
3 Dimensional ◽  
Drop Landing ◽  
Prevention Studies ◽  
Acl Injury Prevention

Context:Due to the limitations of single-center studies in achieving appropriate sampling with relatively rare disorders, multicenter collaborations have been proposed to achieve desired sampling levels. However, documented reliability of biomechanical data is necessary for multicenter injury-prevention studies and is currently unavailable.Objective:To measure the reliability of 3-dimensional (3D) biomechanical waveforms from kinetic and kinematic variables during a single-leg landing (SLL) performed at 3 separate testing facilities.Design:Multicenter reliability study.Setting:3 laboratories.Patients:25 female junior varsity and varsity high school volleyball players who visited each facility over a 1-mo period.Intervention:Subjects were instrumented with 43 reflective markers to record 3D motion as they performed SLLs. During the SLL the athlete balanced on 1 leg, dropped down off of a 31-cm-high box, and landed on the same leg. Kinematic and kinetic data from both legs were processed from 2 trials across the 3 laboratories.Main Outcome Measures:Coefficients of multiple correlations (CMC) were used to statistically compare each joint angle and moment waveform for the first 500 ms of landing.Results:Average CMC for lower-extremity sagittal-plane motion was excellent between laboratories (hip .98, knee .95, ankle .99). Average CMC for lower-extremity frontal-plane motion was also excellent between laboratories (hip .98, knee .80, ankle .93). Kinetic waveforms were repeatable in each plane of rotation (3-center mean CMC ≥.71), while knee sagittal-plane moments were the most consistent measure across sites (3-center mean CMC ≥.94).Conclusions:CMC waveform comparisons were similar relative to the joint measured to previously published reports of between-sessions reliability of sagittal- and frontal-plane biomechanics performed at a single institution. Continued research is needed to further standardize technology and methods to help ensure that highly reliable results can be achieved with multicenter biomechanical screening models.

scholarly journals Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis during Sexual Intercourse

2020 ◽  
Vol 17 (8) ◽  
pp. 2884 ◽  
Author(s):  
José M. Oliva-Lozano ◽  
Isabel Martín-Fuentes ◽  
José M. Muyor
Keyword(s):  
Range Of Motion ◽  
Sexual Intercourse ◽  
Gold Standard ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Validity And Reliability ◽  
Intraclass Correlation Coefficients ◽  
Non Invasive ◽  
Fast Pace ◽  
Test Retest Reliability

To understand the physical demands of sexual intercourse, it is necessary to monitor the kinematic parameters of this activity using relatively non-invasive technology. The aims of this study are to analyze the validity and reliability of an inertial device for monitoring the range of motion at the pelvis during simulated intercourse and compare the range of motion (ROM). Twenty-six adults were monitored during intercourse using an inertial device (WIMU) and a motion capture system (gold standard) in a test that consisted of 4 sets of 20 simulated in–out cycles (IOC) in missionary and cowgirl positions. Men and women were tested separately in a laboratory setting for simulated intercourse aims. There were no differences between the WIMU and the gold standard system at fast pace (p > 0.05), whereas there were differences at slow pace (~2.04°; p ≤ 0.05; d = 0.17). Intraclass correlation coefficients (ICCs) for the relationship between systems was very close to 1 at both paces (slow: 0.981; fast: 0.998). The test–retest reliability analysis did not show any difference between sets of measurements. In conclusion, WIMU could be considered as a valid and reliable device for IOC range of motion monitoring during sexual intercourse in missionary and cowgirl positions.

Changes in Active Ankle Dorsiflexion Range of Motion after Acute Inversion Ankle Sprain

2009 ◽  
Vol 18 (3) ◽  
pp. 358-374 ◽  
Author(s):  
James W. Youdas ◽  
Timothy J. McLean ◽  
David A. Krause ◽  
John H. Hollman
Keyword(s):  
Range Of Motion ◽  
Outcome Measure ◽  
Sagittal Plane ◽  
Plantar Flexion ◽  
Exercise Program ◽  
Plane Motion ◽  
Ankle Dorsiflexion ◽  
Home Exercise ◽  
Main Outcome Measure ◽  
Ankle Inversion

Context:Posterior calf stretching is believed to improve active ankle dorsiflexion range of motion (AADFROM) after acute ankle-inversion sprain.Objective:To describe AADFROM at baseline (postinjury) and at 2-wk time periods for 6 wk after acute inversion sprain.Design:Randomized trial.Setting:Sports clinic.Participants:11 men and 11 women (age range 11–54 y) with acute inversion sprain.Intervention:Standardized home exercise program for acute inversion sprain.Main Outcome Measure:AADFROM with the knee extended.Results:Time main effect on AADFROM was significant (F3,57 = 108, P < .001). At baseline, mean active sagittal-plane motion of the ankle was 6° of plantar flexion, whereas at 2, 4, and 6 wk AADFROM was 7°, 11°, and 11°, respectively.Conclusions:AADFROM increased significantly from baseline to week 2 and from week 2 to week 4. Normal AADFROM was restored within 4 wk after acute inversion sprain.

Assessment of early orthodontic treatment on functional shifts by telemonitoring mandibular movements using a smart phone

2018 ◽  
Vol 26 (3) ◽  
pp. 150-160 ◽  
Author(s):  
Mahmoud Sedky Adly ◽  
Aya Sedky Adly ◽  
Afnan Sedky Adly
Keyword(s):  
Orthodontic Treatment ◽  
Low Cost ◽  
Smart Phone ◽  
Mixed Dentition ◽  
Validity And Reliability ◽  
Four Dimensions ◽  
Group I ◽  
Normal Occlusion ◽  
Functional Shift ◽  
Mandibular Movements

Introduction To assess effect of orthodontic treatment on anterior or lateral functional shift in mixed dentition stage by telemonitoring mandibular movements in four-dimensions using a novel objective method that can assist in orthodontics and other dental specialties without the need of expensive, bulky or complicated equipment. Methods A sample of 60 patients was divided into two groups. Group I included 30 patients with normal occlusion and TMJ functions. Group II included 30 patients that were diagnosed with an abnormal path of closure in antero-posterior or transverse directions due to disharmony between centric occlusion and centric relation. The latter group was orthodontically treated and mandibular movements were measured before, during, directly after orthodontic treatment, and one year after treatment using our proposed method. To evaluate validity and reliability of our method, it was compared with two methods, a commercially available mandibular scanner, and a low-cost graphical method that utilizes a sheet of wax and a stylus. Results It was found that the overall differences between opening and closing curves of our proposed method and the other two methods were small and negligible ( p > 0.05). Discussion It was found that our proposed method is offering a reasonably accurate, simple and rapid way to telemonitor the mandible movements in four-dimensions using the rear/front camera of any smart-phone.

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