Force plate analyses before and after surgical treatment of unilateral fragmented coronoid process

2000 ◽  
Vol 13 (03) ◽  
pp. 135-140 ◽  
Author(s):  
H. A. W. Hazewinkel ◽  
W. E. van den Brom ◽  
L. F. H. Theyse
Keyword(s):  
Surgical Treatment ◽  
Force Plate ◽  
Contralateral Side ◽  
Coronoid Process ◽  
Vertical Force ◽  
Normal Range ◽  
Radiological Progression ◽  
Before And After ◽  
Reaction Forces ◽  
Plate Analysis

SummaryIn this prospective study force plate analysis was used to investigate the locomotor aspects of unilateral fragmented medial coronoid process (FCP) and the effects of surgical treatment in seven dogs. The diagnosis unilateral FCP. was based on clinical and radiological examination of both elbow joints and confirmed during surgery. Radiological screening of the elbow joints was repeated at six months after surgery to determine the osteoarthritis (OA) score and to exclude any bilateral involvement. Force plate analyses were performed at three consecutive intervals: prior to surgery, at six weeks and at six months after surgery. The peak braking force Fymax, peak propulsive force-Fymin, peak vertical force-Fzmax and the corresponding impulses Iymax, Iymin and Iz were determined. The symmetry index SI of these forces and impulses (ratio affected side : contralateral side) in the front limbs was assessed to evaluate the locomotion. The combination of the Sis of Fymin, Fymax, Iymin, Iymax and Iz proved to be more sensitive in determining front limb lameness due to unilateral FCP than the SI of the peak vertical force Fzmax. The SI of Fzmax had returned to within the normal range at six months after surgery for all seven dogs, whereas the other parameters showed persisting abnormalities in two dogs. In this study the improvement after surgical treatment of the SI of both Fymin and Iymin was significant at P<0.05. All of the joints showed progressive radiological signs of OA at six months after surgery.The effects of unilateral fragmented medial coronoid process on the ground reaction forces of the front limbs and the effects of surgical treatment were evaluated using force plate analysis. Surgical treatment seemed to have a favorable outcome, despite radiological progression of osteoarthritis.

A Comparison of Surgical and Medical Treatment of Fragmented Coronoid Process and Osteochondritis Dissecans of the Canine Elbow

1995 ◽  
Vol 08 (04) ◽  
pp. 177-183 ◽  
Author(s):  
C. W. Miller ◽  
C. L. Taves ◽  
G. R. Bouck
Keyword(s):  
Medical Treatment ◽  
Osteochondritis Dissecans ◽  
Weight Bearing ◽  
Force Plate ◽  
Normal Weight ◽  
Coronoid Process ◽  
Radiographic Evaluation ◽  
Prospective Clinical Study ◽  
Plate Analysis

SummaryA randomized prospective clinical study was performed to compare the effect of surgery for fragmented coronoid process (FCP) and osteochondritis dissecans (OCD) of the canine elbow, with medical treatment using pentosan polysulphate (PPS). Nineteen dogs with FCP and/or OCD of the elbow were randomly assigned to either the surgical or medical group. Lameness examination, radiographic evaluation and force plate analysis were performed at the time of admission, and were repeated at two, four, six and nine months after treatment. In dogs with asymmetrical lameness, in both the medical and surgical groups, the peak vertical forces and mean vertical forces for the more affected limbs were significantly lower than the control means at time zero. In both the medical and surgical group, the peak and mean vertical forces improved during the course of the study. Weightbearing in medically treated dogs approached that in controls at a faster rate than in those treated surgically. After nine months of follow-up, differences could not be detected between the dogs treated surgically, and those treated with PPS.Surgical and medical treatment for fragmented coronoid process and osteochondritis dissecans of the canine elbow were compared. Medical treatment resulted in a more rapid return to normal weight-bearing than did surgical treatment. After nine months of follow-up, differences were not detected between the medically and surgically treated dogs.

Long-term Results of Conservative Treatment, Excision Arthroplasty and Triple Pelvic Osteotomy for the Treatment of Hip Dysplasia in the Immature Dog

1997 ◽  
Vol 10 (03) ◽  
pp. 130-135 ◽  
Author(s):  
J. Dupuis ◽  
G. Beauregard ◽  
N. H. Bonneau ◽  
L. Breton ◽  
J. Planté
Keyword(s):  
Conservative Treatment ◽  
Force Plate ◽  
Pelvic Osteotomy ◽  
Control Group ◽  
Propulsive Force ◽  
Hind Limbs ◽  
Reaction Forces ◽  
Plate Analysis ◽  
The One ◽  
Excision Arthroplasty

SummaryThe long-term efficiency of conservative treatment, excision arthroplasty of the femoral head and neck and triple pelvic osteotomy for the treatment of hip dysplasia in the immature dog were compared using ground reaction forces analysis at the trot. Fourteen hips were re-evaluated for the conservative treatment group, 16 for the triple pelvic osteotomy group and ten for the excision arthroplasty group. Force plate analysis demonstrated that hind limbs belonging to the triple pelvic osteotomy group had, at the trot, a locomotor function similar to the one of normal hind limbs in the control group. At a “similar age”, hind limbs of the conservative group did not show any marked difference from those in the triple pelvic osteotomy and control groups. The dogs of the excision arthroplasty group showed ground reaction forces abnormalities, most probably due to the absence of a coxofemoral joint (decreased peak propulsive force and Fz impulse, compared to triple pelvic osteotomy and control groups). The forelimbs of conservative treatment, excision arthroplasty and triple pelvic osteotomy groups showed a peak propulsive force superior to the one in the control group. This could be an adaptation phenomenon in order to compensate a deficient function of the hind limbs or a habit acquired at a younger age.Force plate analysis has demonstrated that hind limbs treated bilaterally with triple pelvic osteotomy had, at the trot, a locomotor function similar to the one of normal hind limbs from a control group. At a mean age of 4.5 ± 1 years, dogs treated conservatively did not show, at the trot, any marked difference with those treated with triple pelvic osteotomy and with normal dogs. Hind limbs treated with excision arthroplasty showed certain abnormalities most probably due to the absence of a coxofemoral joint such as a significant decrease of peak propulsive force and Fz impulse.

scholarly journals Outcome after Modified Maquet Procedure in dogs with unilateral cranial cruciate ligament rupture: Evaluation of recovery limb function by use of force plate gait analysis

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256011
Author(s):  
Giovanni Della Valle ◽  
Chiara Caterino ◽  
Federica Aragosa ◽  
Fabiana Micieli ◽  
Dario Costanza ◽  
...  
Keyword(s):  
Gait Analysis ◽  
Cruciate Ligament ◽  
Force Plate ◽  
Ground Reaction Forces ◽  
Cranial Cruciate Ligament ◽  
Ligament Rupture ◽  
Cruciate Ligament Rupture ◽  
Reaction Forces ◽  
Plate Analysis ◽  
Cranial Cruciate Ligament Rupture

Introduction Cranial cruciate ligament failure is one of the principal causes of canine lameness. Several surgical procedures were proposed to achieve joint stabilisation; among these, the Modified Maquet Procedure involves using a titanium foam wedge to achieve and maintain the tibial tuberosity advancement. The force-plate analysis provides to objectively assess normal and abnormal gait and the outcome of different surgical techniques. The study evaluates the outcome of limbs that underwent Modified Maquet Procedure using land-force plate analysis comparing the operated limb with its healthy contralateral one as a control. Materials and methods Thirty-five dogs with unilateral cranial cruciate ligament rupture were evaluated. Outcome after surgery was assessed by orthopaedic and radiographic evaluations and force plate gait analysis performed before surgery, at 15, 30 and 90 days after surgery. For objective comparison of ground reaction forces, data of operated limb were compared to contralateral limb on each time control and Symmetry Index at 90 days was determined. Healing radiographic signs, minor and major complication were reported. Results A significant improvement in ground reaction forces was reached in all the treated limbs between set time intervals. The median percentage increase in ground reaction forces was constant from 15 to 90 days, with a Symmetry Index >9 in 54.2% of patients suggesting a normal gait symmetry. A complete bone healing was noticed at 90 days follow-up radiographic assessment. We experienced three major (8.5%) and one minor (2.8%) complications. Conclusions To the Authors’ knowledge, this is the first study in the veterinary literature that assessed outcomes of dogs undergoing Modified Maquet Procedure for the treatment of cranial cruciate ligament rupture using force plate gait analysis and healthy contralateral limb as a control group. Our results confirm that Modified Maquet Procedure is an effective method to stabilise the stifle joint.

Treatment of traumatic coxo-femoral luxation by cemented total hip arthroplasty

2004 ◽  
Vol 17 (04) ◽  
pp. 198-203 ◽  
Author(s):  
A. Pozzi ◽  
M.P. Kowaleski ◽  
J. Dyce ◽  
K.A. Johnson
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Force Plate ◽  
Joint Disease ◽  
Vertical Force ◽  
Total Hip ◽  
Cumulative Function ◽  
Plate Analysis ◽  
External Trauma ◽  
Cemented Total Hip Arthroplasty

SummarySurgical procedures such as total hip arthroplasty (THA) or femoral head and neck excision may be indicated as a treatment for traumatic coxo-femoral luxation that is complicated by pre-existing joint disease, concurrent fractures or recurrent luxation. The purpose of our study was to evaluate outcome after treatment of traumatic coxo-femoral luxation by THA. Medical records of dogs undergoing cemented THA from 1996 to 2002 were reviewed. Inclusion criteria were coxofemoral luxation resulting from severe external trauma and radiographic follow-up of at least 3 months. Ten dogs (12 THA) met the criteria for inclusion. Complications included THA luxation (n = 1) and a non-displaced peri-prosthetic femoral fracture (n = 1) that healed without further surgery. Median cumulative function scores from client questionnaires after THA were not significantly different in dogs with previously normal (8, range: 7-10), (n = 5) and dysplastic (9, range: 7–16), (n = 5) hips (P = 0.410). Six dogs were available for re-examination and force plate analysis at greater than 6 months post-THA, and none of these dogs had any visible lameness. Peak vertical force (% BWt) showed a trend towards being less in THA (60.8±5.1) than non-operated (68.1±6.1) hindlimbs (P = 0.057), whereas vertical impulse (% BWt x sec) was similar in THA (9.1±1.6) and non-operated (9.8±1.2) hindlimbs (P = 0.286). Our findings indicate that THA can be a successful treatment for traumatic coxo-femoral luxation, irrespective of the dysplastic status of the joint prior to injury.

Reduction of Lower Limb Model Indeterminacy by Force Redundancy in Sit-to-Stand Motion

2004 ◽  
Vol 20 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Margaret K.Y. Mak ◽  
Oron Levin ◽  
Joseph Mizrahi ◽  
Christina W.Y. Hui-Chan
Keyword(s):  
Force Plate ◽  
Ground Reaction Forces ◽  
Elderly Persons ◽  
Anthropometric Data ◽  
Joint Torques ◽  
Segment Model ◽  
Sit To Stand ◽  
Before And After ◽  
Reaction Forces ◽  
Force Plate Data

Calculation of joint torques during the rising phase of sit-to-stand motion is in most cases indeterminate, due to the unknown thighs/chair reaction forces in addition to the other sources of uncertainties such as joint positioning and anthropometric data. In the present study we tested the reliability of computation of the joint torques from a five-segment model; we used force plate data of thighs/chair and feet/ground reaction forces, in addition to kinematic measurements. While solving for joint torques before and after seat-off, differences between model solutions and measured data were calculated and minimized using an iterative algorithm for the reestimation of joint positioning and anthropometric properties. The above method was demonstrated for a group of six normal elderly persons.

Force Plate Analysis Before and After Dorsal Decompression for Treatment of Degenerative Lumbosacral Stenosis in Dogs

2005 ◽  
Vol 34 (5) ◽  
pp. 450-456 ◽  
Author(s):  
Nicolien J. Klaveren ◽  
Niyada Suwankong ◽  
Sanneke De Boer ◽  
Walter E. Brom ◽  
George Voorhout ◽  
...  
Keyword(s):  
Force Plate ◽  
Before And After ◽  
Plate Analysis

GROUND REACTION FORCE ANALYSIS FOR ASSESSING THE DIFFERENCES BETWEEN NORMAL AND WADDLING GAIT PATTERNS

2013 ◽  
Vol 25 (02) ◽  
pp. 1350024
Author(s):  
Mehdi Razeghi ◽  
Mostafa Rostami ◽  
Nima Jamshidi ◽  
Hamed Ghomashchi
Keyword(s):  
Muscular Dystrophy ◽  
Ground Reaction Force ◽  
Reaction Force ◽  
Force Plate ◽  
Case Series ◽  
Normal Subjects ◽  
Control Group ◽  
Reaction Forces ◽  
Force Components ◽  
Plate Analysis

Background: The purpose of this case series was to quantify gait to study muscular dystrophy. In this research, the quantitative differences between normal and waddling gaits were assessed by force plate analysis. Methods: Nineteen myopathy patients and 20 normal subjects serving as the control group participated in this research. In this study, quantitative analyses of gait have been used to investigate the differences in mobility between normal subjects and myopathy patients. Patient data were collected from Iranian Muscular Dystrophy Association members, and normal data were extracted from students of Azad University. All of the gait tests were performed using a Kistler force platform. Participants walked at a self-selected speed, barefoot, independently, and without assistive devices. Results: Our findings indicate that there were no significant differences between the patients and the control group in the anterior–posterior components of the ground reaction forces; however, there were considerable differences in the force components between the groups in the medial-lateral and vertical directions of the ground reaction force. In addition, there were significant differences in the time parameters between the groups along the vertical and medial-lateral directions.

FEASIBILITY OF ESTIMATING JOINT MOMENTS DURING GAIT WITH ONLY KINEMATIC DATA

2002 ◽  
Vol 02 (02) ◽  
pp. 131-145 ◽  
Author(s):  
HARUHIKO SATO ◽  
PAUL D. ANDREW
Keyword(s):  
Gait Analysis ◽  
Center Of Mass ◽  
Force Plate ◽  
Upper Body ◽  
Vertical Force ◽  
Joint Moments ◽  
Kinematic Data ◽  
Reaction Forces ◽  
Pathological Gait ◽  
Analysis System

A preliminary model is presented for estimating floor reaction forces during human walking based only on kinematic data. Such a model would be useful for supplementing purely qualitative gait analysis performed in clinics where force plates would be an unaffordable luxury, but not for situations in which quantitative data would be used in making such decisions as how to perform an orthopedic surgery. In this model, the vertical components of floor reaction forces are determined by conventional double differentiation of kinematic data, but the horizontal (fore-aft) components are based instead on constraints in which the floor reaction forces are characterized as acting through the center of mass of the upper body. To assess the accuracy of our calculations, we gathered data of gait by a healthy 22-year-old woman using a motion analysis system with force plates. Pathological gait data were also examined. Joint moments were computed from both force plate data and from our estimates of floor reaction forces. Prediction of vertical force showed higher reliability than prediction of fore-aft force. Joint moments from kinematics were successfully calculated in normal gait, but not in pathological gait, especially at the hip joint. The proposed approach may have some merit for performing a gait analysis even when no force plate is present, but the inaccuracy increases in the case of a subject whose upper body sways during gait.

scholarly journals Clustering Golfers through Force Plate Analysis

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 63
Author(s):  
Jonathan Shepherd ◽  
Erik Henrikson ◽  
Scott Lynn ◽  
Paul Wood
Keyword(s):  
Force Plate ◽  
Force Production ◽  
Warm Up ◽  
Reaction Forces ◽  
Single Force ◽  
Ball Flight ◽  
Target Force ◽  
Plate Analysis ◽  
The Individual ◽  
Swing Speed

Golf is a sport which requires players to use ground interaction to generate clubhead speed in order to propel the ball towards the target. Force platforms are a technology which can be used to measure these ground reaction forces. Golfers generate force through a combination of jumping, sliding or twisting actions during the swing. Understanding how golfers generate these forces and if there are any groups which golfers could be clustered into could be used to enhance golf instruction as well as clubhead design or fitting practices for golf equipment. A total of 105 right-handed experienced golfers (handicap mean = 8.32 ± 8.31) consented to participate in the study of different swing speeds (31 below 95 mph, 41 over 105 mph and 33 between 95 and 105 mph). A calibrated single force plate was used for the test which sampled at 1000 Hz and recorded force and moment data in three axes. After a self-guided warm up, the players were instructed to hit five 7-iron shots and five drives to the best of their ability in an indoor hitting bay which used a launch monitor to record the club delivery and ball flight information. It was found that handicap or swing speed did not dictate the primary force production mechanism (sliding, jumping or twisting/spinning). This knowledge could aid engineers to design equipment better suited to the individual and help coaches build individualized programs to create power and clubhead speed in all players.

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