Monitoring hip posture in total hip arthroplasty using an inertial measurement unit-based hip smart trial system: An in vitro validation experiment using a fixed pelvis model

Tang, Hao; Zhou, Yixin; Mai, Baojun; Zhu, Binjie; Chen, Ping; Fu, Yujia; Wang, Zhihua

doi:10.1016/j.jbiomech.2019.109415

Cited by 7 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although instrumented passive implants have already been used in vivo in humans (Soares dos Santos et al 2014 ; Torrão et al 2015 ), research has been following new paths, in particular to monitor the postoperative health state of implants, including the assessment of their postoperative translational and rotational dislocations (using inertial and piezoelectric sensing) (Almouahed et al 2011a ; Safaei et al 2020 ; Tang et al 2019 ), and the diagnosis of damage/fractures of implants’ components (using magnetoelastic and piezoelectric sensing) (Mouzakis et al 2009 ; Safaei et al 2017 ).…”

Section: Smart Implantsmentioning

confidence: 99%

Bioelectronic multifunctional bone implants: recent trends

Santos

Bernardo

2022

Bioelectron Med

View full text Add to dashboard Cite

The concept of Instrumented Smart Implant emerged as a leading research topic that aims to revolutionize the field of orthopaedic implantology. These implants have been designed incorporating biophysical therapeutic actuation, bone-implant interface sensing, implant-clinician communication and self-powering ability. The ultimate goal is to implement revist interface, controlled by clinicians/surgeons without troubling the quotidian activities of patients. Developing such high-performance technologies is of utmost importance, as bone replacements are among the most performed surgeries worldwide and implant failure rates can still exceed 10%. In this review paper, an overview to the major breakthroughs carried out in the scope of multifunctional smart bone implants is provided. One can conclude that many challenges must be overcome to successfully develop them as revision-free implants, but their many strengths highlight a huge potential to effectively establish a new generation of high-sophisticated biodevices.

show abstract

Section: Smart Implantsmentioning

confidence: 99%

Bioelectronic multifunctional bone implants: recent trends

Santos

Bernardo

2022

Bioelectron Med

View full text Add to dashboard Cite

show abstract

“…Table III compares the performances of measuring systems used in THR surgery. Compared with the IMU-based systems in [21] and [26], our system improves adaptability of magnetic environment by using 6-axis IMU without magnetometer. Moreover, we use quaternions to avoid potential risk of gimbal lock, which may happen in [21].…”

Section: B Comparison Of System Performancementioning

confidence: 99%

“…Moreover, we use quaternions to avoid potential risk of gimbal lock, which may happen in [21]. Compared with [26], whose algorithm is also based on quaternions, our system is wireless and therefore has better magnetic field adaptability. Besides, the experiments of our system are more comprehensive, as our experiments are conducted with both fixed and various reference angles for system verification.…”

Section: B Comparison Of System Performancementioning

confidence: 99%

An IMU-Based Real-Time Measuring System for Acetabular Prosthesis Implant Angles in THR Surgeries

et al. 2021

Self Cite

View full text Add to dashboard Cite

With the aging of population, the number of total hip replacement (THR) surgeries increases year by year. To improve the success rate of THR operation, the measurement of acetabular prosthesis angles should be pr eci se dur i ng the sur g er y. We des ign an ine r ti al measurement unit based real-time measurement system, which measures the initial attitude of the pelvis coordinate, and traces the real-time attitude of the pelvis coordinate and prosthesis axis. By collecting real-time data of different pelvic and prosthesis attitudes in quaternion representation through accelerometers and gyroscopes, the relative position between pelvis and prosthesis is calculated in real time. An optimized algorithm is proposed to obtain prosthesis implant angles accurately from the data. The experimental results show that the measured implant angles agree with that calculated by radiographic value, the root mean square errors (RMSE) are less than 3.52 degrees, which is within the safe range of THR requirement. Furthermore, no matter how the implant angles change, the measured values agree with reference values, the RMSE is less than 3.27 degrees. The experimental results show that our system can trace the real-time dislocation of the prosthesis during the THR surgeries. Index Terms-Total hip replacement (THR), inertial measurement unit (IMU), real-time measurement, acetabular prosthesis implant angles.

show abstract

“…The problem with the current ROM tests is that they are subjective, and there is no standard test protocol. Tang et al [10] , designed an inertial measurement unit (IMU) sensor-based implant and tested the accuracy/drift in vitro. Several studies indicate that soft tissue tension is related to pain (for instance in the groin and knee), dislocation, range of motion of the hip and limping [11] – [13] .…”

Section: Introductionmentioning

confidence: 99%

Design of an Affordable, Modular Implant Device for Soft Tissue Tension Assessment and Range of Motion Tracking During Total Hip Arthroplasty

Wei

Blaauw

Pol

et al. 2022

IEEE J. Transl. Eng. Health Med.

View full text Add to dashboard Cite

Background: In hip arthroplasties, surgeons rely on their experience to assess the stability and balance of hip tissues when fitting the implant to their patients. During the operation, surgeons use a modular, temporary set of implants to feel the tension in the surrounding soft tissues and adjust the implant configuration. This process is naturally subjective and therefore depends on the operator. Inexperienced surgeons undertaking hip arthroplasties are twice as likely to experience errors than their experienced colleagues, leading to dislocations, pain and discomfort for the patients. Methods: To address this issue, a new, 3DOF force measurement system was developed and integrated into the modular, trial implants that can quantify forces and movements intraoperatively in 3D. The prototypes were evaluated in three post-mortem human specimens (PMHSs), to provide surgeons with objective data to help determine the optimal implant fit and configuration. The devices comprise a deformable polymer material providing strain-based displacements measured with electromagnetic-based sensors and an inertial measurement unit (IMU) for motion data. Results: Device results show a relative accuracy of approx. 2% and a sensitivity of approx. 1%. PMHS results indicated that soft tissue forces on the hip joint peak in the order of ~100 N and trend with positions of the leg during range of motion (ROM) tests, although force patterns differ between each PMHS. Conclusion: By monitoring forces and force patterns of hip soft tissues, in combination with standardised ROM tests, the force patterns could shed a light on potential anomalies that can be addressed during surgery. Clinical and Translational Impact Statement: The development of an instrumented hip implant device for use during surgery knowledge will eventually allow us to develop a predictive model for soft tissue balancing, that can be used for pre- and intra-operative planning for each patient on a tailored and personalised basis. Ultimately, we hope that with this device, patients will benefit from a faster recovery, from a more-precisely fitted hip, and an improved quality of life.

show abstract

Monitoring hip posture in total hip arthroplasty using an inertial measurement unit-based hip smart trial system: An in vitro validation experiment using a fixed pelvis model

Cited by 7 publications

References 30 publications

Bioelectronic multifunctional bone implants: recent trends

Bioelectronic multifunctional bone implants: recent trends

An IMU-Based Real-Time Measuring System for Acetabular Prosthesis Implant Angles in THR Surgeries

Design of an Affordable, Modular Implant Device for Soft Tissue Tension Assessment and Range of Motion Tracking During Total Hip Arthroplasty

Contact Info

Product

Resources

About