Analysis of Knee Strength Measurements Performed by a Hand-Held Multicomponent Dynamometer and Optoelectronic System

Ancillao, Andrea; Rossi, Stefano; Cappa, Paolo

doi:10.1109/tim.2016.2620799

Cited by 15 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding was in agreement with other works that reported a poor repeatability and reliability of ankle strength measurements, especially for plantarflexion trials [17,18]. From a comparison of the index values with the ones evaluated for the knee strength measurements [30], it emerges that, among the strength measurements, the plantarflexion analysis is the more complex one to be performed and it implicates low values of accuracy in force and moment measurements and a low ability of the operator to maintain still the HHD. On the contrary, the quality of ankle dorsiflexion strength measurements is comparable with the knee flexion and extension ones.…”

Section: Resultssupporting

confidence: 92%

“…Finally, we calculated also the index index to provide an overall quantification of the quality of the strength measurements [30]. Specifically, index (see (7)) takes into account both the angular displacement of HHD and the transverse component of moment.…”

Section: Discussionmentioning

confidence: 99%

“…A validation protocol involving a motion capture system and a multiaxial load cell was exploited to measure actual forces and moments exerted by the subject, the HHD position, and the undesired motion of the patient's foot. The present work took advantage of a measurement protocol previously validated and already applied to the analysis of knee strength measurements [22,30].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Validation of Ankle Strength Measurements by Means of a Hand-Held Dynamometer in Adult Healthy Subjects

2017

Self Cite

View full text Add to dashboard Cite

Uniaxial Hand-Held Dynamometer (HHD) is a low-cost device widely adopted in clinical practice to measure muscle force. HHD measurements depend on operator's ability and joint movements. The aim of the work is to validate the use of a commercial HHD in both dorsiflexion and plantarflexion ankle strength measurements quantifying the effects of HHD misplacements and unwanted foot's movements on the measurements. We used an optoelectronic system and a multicomponent load cell to quantify the sources of error in the manual assessment of the ankle strength due to both the operator's ability to hold still the HHD and the transversal components of the exerted force that are usually neglected in clinical routine. Results showed that foot's movements and angular misplacements of HHD on sagittal and horizontal planes were relevant sources of inaccuracy on the strength assessment. Moreover, ankle dorsiflexion and plantarflexion force measurements presented an inaccuracy less than 2% and higher than 10%, respectively. In conclusion, the manual use of a uniaxial HHD is not recommended for the assessment of ankle plantarflexion strength; on the contrary, it can be allowed asking the operator to pay strong attention to the HHD positioning in ankle dorsiflexion strength measurements.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Validation of Ankle Strength Measurements by Means of a Hand-Held Dynamometer in Adult Healthy Subjects

2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Prof. Cappa was a pioneer in the systematic evaluation of measurement systems in Experimental Biomechanics. Throughout his research, he assessed the metrological characteristics of optoelectronic systems [ 13 , 14 , 15 , 16 ], pressure platforms [ 17 ], and dynamometers [ 18 ], with a particular focus on inertial measurement systems (IMUs), which have constituted one of his primary research topics.…”

Section: Prof Cappa How We Remember Him: a Leader In Sensors Researmentioning

confidence: 99%

In Memoriam: Paolo Cappa

Palermo

Rossi

Patanè

et al. 2017

Sensors

Self Cite

View full text Add to dashboard Cite

Prof. Paolo Cappa passed away on 26 August 2016, at the age of 59, after a long and courageous fight against cancer. Paolo Cappa was a Professor in Mechanical and Thermal Measurements and Experimental Biomechanics in the Department of Mechanical and Aerospace Engineering of Sapienza University of Rome, where he had also served as the Head of the Department, and a Research Professor in the Department of Mechanical and Aerospace Engineering of New York University Tandon School of Engineering. During his intense, yet short, career, he made several significant scientific contributions within the discipline of Mechanical and Thermal Measurements, pioneering fundamental applications to Biomechanics. He co-founded the Motion Analysis and Robotics Laboratory (MARLab) within the Neurorehabilitation Division of IRCCS Pediatric Hospital “Bambino Gesu”, in Rome, to fuel transitional research from the laboratory to clinical practice. Through collaboration with neurologists and physiatrists at MARLab, Prof. Cappa led the development of a powerful array of novel mechanical solutions to wearable robotics for pediatric patients, addressing dramatic needs for children’s health and contributing to the training of an entire generation of Mechanical Engineering students.

show abstract

“…1 (b), from which we can see that UKA is a minimally invasive surgery [8], which can retain more bone tissue, but it also increases the difficulty of prosthetic calibration during the surgery. Therefore, auxiliary devices are necessary to calibrate the position of the prosthesis in UKA, which are however more difficult to design because of the smaller surgical wound of UKA than that of TKA [9], [10].…”

Section: Introductionmentioning

confidence: 99%

A Wireless Trajectory Measurement System for Unicondylar Knee Arthroplasty

Wang

Zhou

et al. 2020

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

During unicondylar knee arthroplasty surgery, the tibial prosthesis is fixed and the angle of distal femoral prosthesis relative to the prosthetic gasket is changed to generate the force line trajectory, which is important for doctors to judge the appropriate position of the implants. In this paper, we propose a wireless force line trajectory measurement system for unicondylar knee arthroplasty, which includes the pressure sensors array, the control and processing data circuits, the radio frequency transmitter, and the data recorder. Data from twenty sensors is processed and transmitted wirelessly, and the force line trajectory is displayed on the screen in real-time. The least squares fitting algorithm is proposed, with which we obtain the pressure distribution, the maximum pressure points and the force line trajectory. We adopt field programmable gate array to implement the algorithm with lower-upper decomposition to fit the trajectory faster and transmit less data to save power. The average current consumption of the system is 1.37mA in the operating mode. Dimensions of the data transmission module are length 70mm, width 35mm and height 4mm. The total uncertainty of the system measurement force line trajectory is 0.92mm. Experimental results show that the system meets the requirement of real-time measurement of the force line trajectory during the surgery.

show abstract

Analysis of Knee Strength Measurements Performed by a Hand-Held Multicomponent Dynamometer and Optoelectronic System

Cited by 15 publications

References 25 publications

Validation of Ankle Strength Measurements by Means of a Hand-Held Dynamometer in Adult Healthy Subjects

Validation of Ankle Strength Measurements by Means of a Hand-Held Dynamometer in Adult Healthy Subjects

In Memoriam: Paolo Cappa

A Wireless Trajectory Measurement System for Unicondylar Knee Arthroplasty

Contact Info

Product

Resources

About