A method for the measurement of three-dimensional scapular movement

Johnson, GR; Stuart, Paul; Mitchell, Séan R.

doi:10.1016/0268-0033(93)90037-i

Cited by 126 publications

(60 citation statements)

References 4 publications

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“…A computer calculated the position and orientation of the sensors in the electromagnetic field. We used five sensors attached to a pointer, the sternum, humerus, forearm, and a scapula locator [10] to measure position and orientation of the upper extremity. The sensors on the sternum and acromion were fixed using double-sided adhesive tape and covered with a Fixomull stretch selfadhesive bandage (Beiersdorf AG, Hamburg, Germany).…”

Section: Methodsmentioning

confidence: 99%

Contribution of the Reverse Endoprosthesis to Glenohumeral Kinematics

Bergmann

Leeuw

Janssen

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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After placement of a reverse shoulder endoprosthesis, range of motion is usually still compromised. To what extent this occurs from limitation in motion of the reverse endoprosthesis is, however, unclear. We measured the motion pattern of 16 patients (18 shoulders) during three active and passive range of motion tasks using a six degree-of-freedom electromagnetic tracking device. Despite rotator cuff deficiencies, glenohumeral elevation contributed roughly two-thirds of the total thoracohumeral elevation, which is comparable to healthy subjects. However, patients could not actively use the full range of motion provided by the prosthesis. Although we found considerable interindividual differences in shoulder kinematics, the limitation in glenohumeral range of motion appears related to a lack of generated muscle force and not the design of the prosthesis.

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Section: Methodsmentioning

confidence: 99%

Contribution of the Reverse Endoprosthesis to Glenohumeral Kinematics

Bergmann

Leeuw

Janssen

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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“…The locator had three pins adjusted to fit the acromial angle, the inferior angle and the root of the scapular spine (Johnson et al, 1993). Pressure-sensors attached to the tips of the pins provided feedback to the observer which was used to maintain low and equal pressures on the landmarks whilst tracking their motion, hence reducing any possible effects on the physiological scapular movement (Shaheen, 2010).…”

Section: Study Population and Instrumentationmentioning

confidence: 99%

“…The locator is used to statically capture the orientation of the scapula (Johnson et al, 1993) or to track its motion at slow/medium speeds (Shaheen, 2010), but has not been shown to be able to do so during fast dynamic activities.…”

Section: Introductionmentioning

confidence: 99%

Effects of attachment position and shoulder orientation during calibration on the accuracy of the acromial tracker

Shaheen

Alexander

Bull

2011

Journal of Biomechanics

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“…Before the actual measurements, a calibration measurement was performed in which the orientation of the technical markers was defined relative to bony landmarks. Also, the orientation of the scapula was determined by a calibration measurement with a scapula-locator system, 21 while the subject sat in the wheelchair with the arm in the anatomic position. From the scapula calibration measurement and the orientation of the humerus during the tasks, the orientation of the scapula and clavicula were calculated by using a regression model of Pascoal.…”

Section: Kinematicsmentioning

confidence: 99%

Mechanical Load on the Upper Extremity During Wheelchair Activities

Drongelen

Woude

Janssen

et al. 2005

Archives of Physical Medicine and Rehabilitation

143

110

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ABSTRACT. van Drongelen S, van der Woude LH, Janssen TW, Angenot EL, Chadwick EK, Veeger DH. Mechanical load on the upper extremity during wheelchair activities. Arch Phys Med Rehabil 2005;86:1214-20.Objective: To determine the net moments on the glenohumeral joint and elbow joint during wheelchair activities.Design: Kinematics and external forces were measured during wheelchair activities of daily living (level propulsion, riding on a slope, weight-relief lifting, reaching, negotiating a curb) and processed in an inverse dynamics biomechanic model.Setting: Biomechanics laboratory. Participants: Five able-bodied subjects, 8 subjects with paraplegia, and 4 subjects with tetraplegia.Interventions: Not applicable. Main Outcome Measure: Net moments on the glenohumeral joint and elbow joint.Results: Peak shoulder and elbow moments were significantly higher for negotiating a curb and weight-relief lifting than for reaching, level propulsion, and riding on a slope. Overall, the elbow extension moments were significantly lower for subjects with tetraplegia than for those with paraplegia.Conclusions: The net moments during weight-relief lifting and negotiating a curb were high when compared with wheelchair propulsion tasks. Taking the effect of frequency and duration into account, these loads might imply a considerable risk for joint damage in the long term.Key Words: Activities of daily living; Biomechanics; Elbow; Rehabilitation; Shoulder; Wheelchairs. © 2005 by American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and RehabilitationI N HANDRIM WHEELCHAIR USERS, the upper extremities are at serious risk of overuse injuries. Wheelchair use requires continuous use of the upper extremities, not only for mobility but also for transfers, weight-relief lifts, and reaching activities. Studies 1,2 have shown that shoulder pain and impingement frequently occur among people with a spinal cord injury (SCI). Pain is experienced during wheelchair-related activities of daily living (ADLs), such as wheelchair propulsion and performing transfers. Because these activities are essential for functional independence, quality of life, and even the life expectancy of people after an SCI, 3 evaluating the mechanical load on the shoulder is important to an understanding of the mechanisms that may cause upper-extremity joint degeneration. Factors that have been mentioned as contributors to the development of shoulder complaints are the relatively high load and high frequency of this load on the shoulder during wheelchair propulsion. 4 In addition, and possibly even more important, the load on the shoulder during other wheelchairrelated tasks, such as transfers and weight-relief lifts, has been mentioned. [5][6][7] In our study, we used net moments around the elbow and the glenohumeral joint (GHJ) to quantify the mechanical load on those joints. Net joint moments are generally used to analyze (working) conditions and to classify these conditions. 8 To show the high loading at the shoulder, studies 9-12 have ...

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A method for the measurement of three-dimensional scapular movement

Cited by 126 publications

References 4 publications

Contribution of the Reverse Endoprosthesis to Glenohumeral Kinematics

Contribution of the Reverse Endoprosthesis to Glenohumeral Kinematics

Effects of attachment position and shoulder orientation during calibration on the accuracy of the acromial tracker

Mechanical Load on the Upper Extremity During Wheelchair Activities

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