Position sense testing: Influence of starting position and type of displacement

2000 ◽  
Vol 81 (5) ◽  
pp. 592-597
Author(s):  
Johan L[ouml ]nn ◽  
Albert G. Crenshaw ◽  
Mats Djupsj[ouml ]backa ◽  
Jonas Pedersen ◽  
H[aring ]kan Johansson
Keyword(s):  
Position Sense ◽  
Starting Position

The Analysis of Proprioception Alteration during First Five Months after Anterior Cruciate Ligament Reconstruction

2018 ◽  
Vol 1 (84) ◽  
Author(s):  
Vilma Jurevičienė ◽  
Albertas Skurvydas ◽  
Juozas Belickas ◽  
Giedra Bušmanienė ◽  
Dovilė Kielė ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Angular Velocity ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Position Sense ◽  
Joint Position Sense ◽  
Joint Position ◽  
Starting Position ◽  
Angular Velocities ◽  
Anterior Cruciate

Research  background  and  hypothesis.  Proprioception  is  important  in  the  prevention  of  injuries  as  reduced proprioception  is  one  of  the  factors  contributing  to  injury  in  the  knee  joint,  particularly  the  ACL.  Therefore, proprioception appears not only important for the prevention of ACL injuries, but also for regaining full function after ACL reconstruction.Research aim. The aim of this study was to understand how proprioception is recovered four and five months after anterior cruciate ligament (ACL) reconstruction.Research methods. The study included 15 male subjects (age – 33.7 ± 2.49 years) who had undergone unilateral ACL reconstruction with a semitendinosus/gracilis (STG) graft in Kaunas Clinical Hospital. For proprioceptive assessment, joint position sense (JPS) was measured on both legs using an isokinetic dynamometer (Biodex), at knee flexion of 60° and 70°, and at different knee angular velocities of 2°/s and 10°/s. The patients were assessed preoperatively and after 4 and 5 months, postoperatively.Research results. Our study has shown that the JPS’s (joint position sense) error scores  to a controlled active movement is significantly higher in injured ACL-deficient knee than in the contralateral knee (normal knee) before surgery and after four and five months of rehabilitation.  After 4 and 5 months of rehabilitation we found significantly lower values in injured knees compared to the preoperative data. Our study has shown that in injured knee active angle reproduction errors after 4 and 5 months of rehabilitation were higher compared with the ones of the uninjured knee. Proprioceptive ability on the both legs was  independent of all differences angles for target and starting position for movement. The knee joint position sense on both legs depends upon the rate of two different angular velocities and the mean active angle reproduction errors at the test of angular velocity slow speed was the highest compared with the fast angular velocity. Discussion and conclusions. In conclusion, our study shows that there was improvement in mean JPS 4 and 5 months after ACL reconstruction, but it did not return to normal indices.Keywords: knee joint, joint position sense, angular velocity, starting position for movement.

Position sense testing: Influence of starting position and type of displacement

2000 ◽  
Vol 81 (5) ◽  
pp. 592-597 ◽  
Author(s):  
Johan Lönn ◽  
Albert G. Crenshaw ◽  
Mats Djupsjöbacka ◽  
Jonas Pedersen ◽  
Håkan Johansson
Keyword(s):  
Position Sense ◽  
Starting Position

Paper 21: Lability and Stability of Human Position Sense

1968 ◽  
Vol 183 (10) ◽  
pp. 119-125
Author(s):  
B. Craske
Keyword(s):  
Emergency Response ◽  
Joint Angle ◽  
Position Sense ◽  
Position Information ◽  
Starting Position ◽  
Apparent Direction ◽  
Experimental Protocols ◽  
Normal Humans ◽  
Contradictory Evidence ◽  
Human Position

It is argued that when normal humans make reaching movements, they move their limbs from a kinaesthetically appreciated starting position. There is a considerable amount of evidence, however, to support the contention that this ‘felt position’ of the limb is highly labile, notwithstanding the apparently contradictory evidence for the existence of receptors which directly determine joint angle. It is proposed that the lability of ‘felt’ position sense in limbs is a transient emergency response of the human localizing system. It is suggested that such a response enables adequate localization to occur subsequent to an error of localization being made when none was intended. (This does not exclude the possibility of lability being associated with other conditions.) Lability is also shown to be a factor in an individual's appreciation of direction of gaze, thus simple experimental protocols can lead to visual misperception of the direction of distal objects. The evidence supports the idea that the visual control system is reset by means of cross modal checking, namely seeing limb extremities to be where they are felt to be. There is also evidence which indicates that kinaesthesis can be altered and stabilized by using visual or auditory position information. This circularity, that vision can modify kinaesthesis and that kinaesthesis can modify apparent direction of gaze, leads to a problem as to the nature of the fixed referent for the human localization system.

Vision Based Starting Position Recognition and Positioning Controlfor Thin Steel Sheet Welding Robot

ROBOT ◽  
2013 ◽  
Vol 35 (1) ◽  
pp. 90 ◽  
Author(s):  
Haiyong CHEN ◽  
Zaojun FANG ◽  
De XU ◽  
Hexu SUN
Keyword(s):  
Steel Sheet ◽  
Welding Robot ◽  
Starting Position ◽  
Thin Steel Sheet ◽  
Thin Steel

Unilateral Auditory Stimulation and the Visual Perception of Verticality: One More Time

1980 ◽  
Vol 50 (1) ◽  
pp. 171-182
Author(s):  
H. D. Day ◽  
L. F. Shelly
Keyword(s):  
Field Theory ◽  
Visual Perception ◽  
Auditory Stimulation ◽  
Vertical Position ◽  
Starting Position ◽  
Perception Of Verticality

The effects of varying conditions of unilateral auditory stimulation on the visual perception of verticality were examined in two experiments using 18 and 42 subjects, respectively. Significant effects of auditory stimulation and hand used to make the verticality adjustments were not found. With only one exception in Exp. 2, the starting position of the rod also had no influence on the ability of the subjects to adjust a rod to its vertical position. The literature pertaining to sensory-tonic field theory of perception was critically reviewed.

Effectiveness of Kinaesthetic Exercise program on Position Sense, Pain, and Disability in Chronic Neck Pain Patients with Cervical Spondylosis – A Randomized Comparative Trial

2020 ◽  
Author(s):  
Ravi Shankar Yerragonda Reddy ◽  
Arun G Maiya ◽  
Sharath Kumar Rao ◽  
Khalid A Alahmari ◽  
Jaya Shanker Tedla ◽  
...  
Keyword(s):  
Neck Pain ◽  
Pain Intensity ◽  
Cervical Spondylosis ◽  
Chronic Neck Pain ◽  
Position Sense ◽  
Study Group ◽  
Position Errors ◽  
Flexion Extension ◽  
Comparative Group ◽  
Neck Disability

Abstract Background Chronic neck pain (CNP) is a significant health problem with only a few evidence-based treatment options. There is growing evidence for the effectiveness of kinaesthetic rehabilitation in musculoskeletal disorders. This study aims to assess kinaesthetic exercise programs' efficacy on cervical position sense, pain, and disability in subjects with cervical spondylosis (CS). Methods CNP subjects (>3 months) with a diagnosis of CS were randomly assigned to either a study group (n=125) who received kinesthetic exercises or to a comparative group (n=125) who received isometric neck exercises and deep cervical flexor (DCF) strengthening exercises. Both group subjects participated in the individualized training program for 24 sessions in 6 weeks. The outcome measures were cervical joint position errors (JPE’s) in flexion, extension, rotation left and right, pain intensity, and neck disability. Results All outcomes were improved significantly from baseline to post 24 sessions of intervention. When compared between groups, there was a significant reduction in JPE’s in flexion (mean difference [MD]= 071, CI=0.22–1.20, p=0.001), extension (MD=1.26, CI=0.70–1.81, p< 0.001) and right rotation (MD=1.08, CI=0.58–1.58, p<0.001), pain intensity (MD=1.58, CI=1.09–2.08, p<0.001), and neck disability (MD=10.27, CI=7.42–13.12, p<0.001) after 24 sessions of intervention favoring the study group. Conclusion Study group subjects who received kinesthetic rehabilitation showed more significant improvements in terms of improved proprioception, decreased pain intensity and disability following 24 sessions of interventions compared with the comparative group.

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