Advancements of a servohydraulic human hip joint motion simulator for experimental investigation of hip joint impingement/dislocation

2010 ◽  
Author(s):  
Nicholas James Stroud
Keyword(s):  
Experimental Investigation ◽  
Hip Joint ◽  
Joint Motion ◽  
Motion Simulator

1A2-K08 Development of a 7 DOF Hip Joint Motion Simulator

2007 ◽  
Vol 2007 (0) ◽  
pp. _1A2-K08_1-_1A2-K08_2
Author(s):  
Makoto SASAKI ◽  
Kazuo KIGUCHI ◽  
Akira YAMASHITA ◽  
Masaru UENO ◽  
Tsuneyuki KOBAYASHI ◽  
...  
Keyword(s):  
Hip Joint ◽  
Joint Motion ◽  
Motion Simulator

322 Development of a Hip Joint Motion Simulator Considering Activities of Daily Living

2006 ◽  
Vol 2006.5 (0) ◽  
pp. 43-44
Author(s):  
Makoto SASAKI ◽  
Kazuo KIGUCHI ◽  
Noriyuki ISHIDA ◽  
Masaaki MAWATARI ◽  
Takao HOTOKEBUCHI
Keyword(s):  
Activities Of Daily Living ◽  
Hip Joint ◽  
Daily Living ◽  
Joint Motion ◽  
Motion Simulator

Comparison of Distal Radioulnar Joint Reconstructions Using an Active Joint Motion Simulator

2005 ◽  
Vol 30 (4) ◽  
pp. 733-742 ◽  
Author(s):  
Wade T. Gofton ◽  
Karen D. Gordon ◽  
Cynthia E. Dunning ◽  
James A. Johnson ◽  
Graham J.W. King
Keyword(s):  
Distal Radioulnar Joint ◽  
Joint Motion ◽  
Active Joint ◽  
Radioulnar Joint ◽  
Motion Simulator

Control System for an Elbow Joint Motion Simulator

2007 ◽  
Author(s):  
Patrick J. Schimoler ◽  
Jeffrey S. Vipperman ◽  
Laurel Kuxhaus ◽  
Angela M. Flamm ◽  
Daniel D. Budny ◽  
...  
Keyword(s):  
Control System ◽  
Elbow Joint ◽  
Degrees Of Freedom ◽  
Biceps Brachii ◽  
Control Algorithms ◽  
Joint Motion ◽  
Motion Simulator ◽  
Co Activation ◽  
Flexion Extension ◽  
The Many

The many muscles crossing the elbow joint allow for its motions to be created from different combinations of muscular activations. Muscles are strictly contractile elements and the joints they surround rely on varying loads from opposing antagonists for stability and movement. In designing a control system to actuate an elbow in a realistic manner, unidirectional, tendon-like actuation and muscle co-activation must be considered in order to successfully control the elbow’s two degrees of freedom. Also important is the multifunctionality of certain muscles, such as the biceps brachii, which create moments impacting both degrees of freedom: flexion / extension and pronation / supination. This paper seeks to develop and implement control algorithms on an elbow joint motion simulator that actuates cadaveric elbow specimens via four major muscles that cross the elbow joint. The algorithms were validated using an anatomically-realistic mechanical elbow. Clinically-meaningful results, such as the evaluation of radial head implants, can only be obtained under repeatable, realistic conditions; therefore, physiologic motions must be created by the application of appropriate loads. This is achieved by including load control on the muscles’ actuators as well as displacement control on both flexion / extension and supination / pronation.

scholarly journals Conservative treatment in children with Legg-Calve-Perthes disease, aged up to 7 years

2020 ◽  
Vol 85 (5-6) ◽  
pp. 91-96
Author(s):  
Marek A Synder ◽  
◽  
Marek Maricniak ◽  
Marek Drobniewski ◽  
Marek Synder ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Conservative Treatment ◽  
Hip Joint ◽  
Complete Healing ◽  
Perthes Disease ◽  
Joint Motion ◽  
Healthy Children ◽  
Joint Development ◽  
Healthy Side

Introduction. Legg-Calve-Perthes disease is one of the most common avascular necroses in children and adolescents. Aims. Assessment of hip joint development and of the quality of life in conservatively treated patients. Establishing indications for conservative treatment in children with Perthes disease. Materials and methods. The inclusion criterion was the age of affected patients: under 7 years at the time of diagnosis The study population included 50 children (10 girls and 40 boys) in the mean age of 5 years and 1 month. All the children participated in follow up appointments, arranged every 3 months, during which clinical examinations (the range of hip joint motion, limb length) were carried out and radiological parameters (Salter extrusion index, ATD, Wiberg angle) were assessed. All the patients were assessed in the IPSG Modified HOOS-16 Hip Survey. Results. The patients, qualified to group A by the Herring classification, demonstrated less limits in hip joint inward rotation and no length reduction of the affected limb (p<0.05). In the patients with Wiberg angle and Salter extrusion index in the affected joint being similar to their corresponding values on the healthy side, the intensity of pain was lower, assessed in the IPSG Modified HOOS-16 Hip Survey, as well as their functioning in everyday life and in sport and recreation activities was better, thus their general quality of life was higher (p <0.05). Conclusions. Children with Perthes disease, diagnosed before the age of 7, do not usually require surgical intervention. In our study, the radiological evaluation of hip joint development showed complete healing of the proximal femoral epiphysis, while preserving femoral head sphericity and good hip functionality. In general, the quality of life of affected patients does not differ from the quality of life of healthy children. The indication for conservative treatment of children with Perthes disease is their age below 7 years. Then a regular monitoring of the course of physiotherapeutic therapy is required, combined with regular radiological controls and clinical assessments of hip joint motion range.

scholarly journals The Large Individual Differences in the Range of Hip Joint Motion Rather Than Lumbar Spine Motion Affect Dynamic Spinopelvic Rhythm

2019 ◽  
Vol 3 (3) ◽  
pp. 255-260
Author(s):  
Katsuhito Yoshioka ◽  
Hideki Murakami ◽  
Satoru Demura ◽  
Satoshi Kato ◽  
Hiroki Kawashima ◽  
...  
Keyword(s):  
Individual Differences ◽  
Lumbar Spine ◽  
Hip Joint ◽  
Large Individual ◽  
Joint Motion ◽  
Spine Motion

scholarly journals Using Magneto-Inertial Measurement Units to Pervasively Measure Hip Joint Motion during Sports

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4970
Author(s):  
Rachel E. Horenstein ◽  
Yohann R. Goudeau ◽  
Cara L. Lewis ◽  
Sandra J. Shefelbine
Keyword(s):  
Hip Joint ◽  
Wireless Sensors ◽  
Measurement Unit ◽  
After School ◽  
Joint Motion ◽  
Inertial Measurement ◽  
School Activities ◽  
Elite Level ◽  
Joint Motions ◽  
Future Work

The use of wireless sensors to measure motion in non-laboratory settings continues to grow in popularity. Thus far, most validated systems have been applied to measurements in controlled settings and/or for prescribed motions. The aim of this study was to characterize adolescent hip joint motion of elite-level athletes (soccer players) during practice and recreationally active peers (controls) in after-school activities using a magneto-inertial measurement unit (MIMU) system. Opal wireless sensors (APDM Inc., Portland OR, USA) were placed at the sacrum and laterally on each thigh (three sensors total). Hip joint motion was characterized by hip acceleration and hip orientation for one hour of activity on a sports field. Our methods and analysis techniques can be applied to other joints and activities. We also provide recommendations in order to guide future work using MIMUs to pervasively assess joint motions of clinical relevance.

The Instant Centre Pathway as a Parameter of Joint Motion — An Experimental Investigation of a Method of Assessment of Knee Ligament Injury and Repair

1980 ◽  
Vol 9 (4) ◽  
pp. 195-200 ◽  
Author(s):  
M L Harding ◽  
M E Blakemore
Keyword(s):  
Experimental Investigation ◽  
Real Life ◽  
Ligament Injury ◽  
Joint Motion ◽  
Knee Ligament ◽  
Diarthrodial Joint ◽  
Knee Ligament Injury ◽  
Injury And Repair ◽  
Method Of Assessment

Movement under load is the most demanding function required of a diarthrodial joint. This presentation will illustrate, pertinent to the context of this meeting, the effects on a parameter of movement of certain types of knee ligament injury which are supposed to occur in real life, and the assessment of the capacity of different methods of repair to restore the movement to normal.

Sign in / Sign up

Export Citation Format

Share Document