scholarly journals Weight-Bearing Estimation for Cane Users by Using Onboard Sensors

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 509 ◽  
Author(s):  
Joaquin Ballesteros ◽  
Alberto Tudela ◽  
Juan Caro-Romero ◽  
Cristina Urdiales
Keyword(s):  
Gait Analysis ◽  
Weight Bearing ◽  
Partial Weight Bearing ◽  
Active Lifestyle ◽  
Test Environment ◽  
Daily Routines ◽  
Load Monitoring ◽  
Partial Weight ◽  
User Condition

Mobility is a fundamental requirement for a healthy, active lifestyle. Gait analysis is widely acknowledged as a clinically useful tool for identifying problems with mobility, as identifying abnormalities within the gait profile is essential to correct them via training, drugs, or surgical intervention. However, continuous gait analysis is difficult to achieve due to technical limitations, namely the need for specific hardware and constraints on time and test environment to acquire reliable data. Wearables may provide a solution if users carry them most of the time they are walking. We propose to add sensors to walking canes to assess user’s mobility. Canes are frequently used by people who cannot completely support their own weight due to pain or balance issues. Furthermore, in absence of neurological disorders, the load on the cane is correlated with the user condition. Sensorized canes already exist, but often rely on expensive sensors and major device modifications are required. Thus, the number of potential users is severely limited. In this work, we propose an affordable module for load monitoring so that it can be widely used as a screening tool. The main advantages of our module are: (i) it can be deployed in any standard cane with minimal changes that do not affect ergonomics; (ii) it can be used every day, anywhere for long-term monitoring. We have validated our prototype with 10 different elderly volunteers that required a cane to walk, either for balance or partial weight bearing. Volunteers were asked to complete a 10 m test and, then, to move freely for an extra minute. The load peaks on the cane, corresponding to maximum support instants during the gait cycle, were measured while they moved. For validation, we calculated their gait speed using a chronometer during the 10 m test, as it is reportedly related to their condition. The correlation between speed (condition) and load results proves that our module provides meaningful information for screening. In conclusion, our module monitors support in a continuous, unsupervised, nonintrusive way during users’ daily routines, plus only mechanical adjustment (cane height) is needed to change from one user to another.

Partial weight bearing of total hip patients with a trochanteric osteotomy – Long-term vertical force measurements in and outside the hospital

2008 ◽  
Vol 23 (5) ◽  
pp. 675-676
Author(s):  
Henri L.P. Hurkmans ◽  
Johannes B.J. Bussmann ◽  
Ruud W. Selles ◽  
Eric Benda ◽  
Henk J. Stam ◽  
...  
Keyword(s):  
Weight Bearing ◽  
Vertical Force ◽  
Trochanteric Osteotomy ◽  
Force Measurements ◽  
Partial Weight Bearing ◽  
Total Hip ◽  
Partial Weight

Partial Weight Bearing after Total Hip Arthroplasty. What does the Patient Really do? A Prospective Randomized Gait Analysis

1994 ◽  
Vol 4 (2) ◽  
pp. 61-68 ◽  
Author(s):  
W. E. Siebert
Keyword(s):  
Total Hip Arthroplasty ◽  
Gait Analysis ◽  
Hip Arthroplasty ◽  
Weight Bearing ◽  
Partial Weight Bearing ◽  
Total Hip ◽  
Biofeedback System ◽  
Repeated Training ◽  
Partial Weight ◽  
Do So

We investigated whether the instruction to bear full or partial weight is accurately followed by the patient after total hip arthroplasty. The investigation was made with a measuring insole. It was revealed that the patient is able to follow the order only if he receives training with and is controlled by an acoustic and/or optical biofeedback system with every step he takes. Training, even very intensive repeated training, with only a scale is futile. The patients’ strides are made with either a full weight load, when they should not do so or with only a partial weight load, when they should bear full weight.

Force Plate Analysis of Dogs with Bilateral Hip Dysplasia Treated with a Unilateral Triple Pelvic Osteotomy: A Long-term Review of Cases

1998 ◽  
Vol 11 (02) ◽  
pp. 85-93 ◽  
Author(s):  
Joanne R. Cockshutt ◽  
H. Dobson ◽  
C. W. Miller ◽  
D. L. Holmberg ◽  
Connie L. Taves ◽  
...  
Keyword(s):  
Gait Analysis ◽  
Hip Dysplasia ◽  
Weight Bearing ◽  
Force Plate ◽  
Case Series ◽  
Pelvic Osteotomy ◽  
Vertical Force ◽  
Long Term Outcome ◽  
Case Series Study

SummaryA retrospective case series study was done to determine the long-term outcome of operations upon dogs treated for canine hip dysplasia by means of a triple pelvic osteotomy (TPO). Twentyfour dogs with bilateral hip dysplasia, that received a unilateral TPO between January 1988 and June 1995, were re-examined at the Ontario Veterinary College. The assessment included physical, orthopedic and lameness examinations, standard blood work, pelvic radiographs and force plate gait analysis. They were compared to bilaterally dysplastic dogs that had not been treated, and also to normal dogs. Force plate data analysis demonstrated a significant increase in peak vertical force (PVF) and mean vertical force over stance (MVF) in the limb that underwent surgical correction by means of a TPO, when compared to the unoperated hip. It was determined that performing a unilateral TPO on a young dysplastic dog resulted in greater forces and weight bearing being projected through the TPO corrected limb when compared to the unoperated limb.Dogs with bilateral hip dysplasia treated with a unilateral triple pelvic osteotomy (TPO) were assessed by force plate gait analysis, radiographs and orthopedic examination. There was a significant increase in hip Norberg angles over time, although degenerative changes did progress. Limbs that had been operated upon had significantly greater peak and mean ground reaction forces than limbs that had not received an operation.

scholarly journals Differences in femoral component subsidence rate after THA using an uncemented collarless femoral stem: full weight-bearing with an enhanced recovery rehabilitation versus partial weight-bearing

2021 ◽  
Author(s):  
Franziska Leiss ◽  
Julia Sabrina Götz ◽  
Matthias Meyer ◽  
Günther Maderbacher ◽  
Jan Reinhard ◽  
...  
Keyword(s):  
Risk Factors ◽  
Enhanced Recovery ◽  
Weight Bearing ◽  
Femoral Stem ◽  
Full Weight Bearing ◽  
Partial Weight Bearing ◽  
Fill Ratio ◽  
Stem Subsidence ◽  
Partial Weight

Abstract Background Femoral component subsidence is a known risk factor for early failure of total hip arthroplasty (THA) using cementless stems. The aim of the study was to compare an enhanced recovery concept with early full weight-bearing rehabilitation and partial weight-bearing on stem subsidence. In addition, the influence of patient-related and anatomical risk factors on subsidence shall be assessed. Methods One hundred and fourteen patients underwent primary cementless THA and were retrospectively analyzed. Sixty-three patients had an enhanced recovery rehabilitation with early full weight-bearing and 51 patients had rehabilitation with partial weight-bearing (20 kg) for 6 weeks. Postoperative subsidence was analyzed on standing pelvic anterior–posterior radiographs after 4 weeks and 1 year. Subsidence was measured in mm. Anatomical and prosthetic risk factors (stem size, canal flare index, canal fill ratio as well as BMI and demographic data) were correlated. Results Femoral stem subsidence rate was significantly higher for the group with an enhanced recovery concept compared to the group with partial weight-bearing at the first radiological follow up after 4 weeks [2.54 mm (SD ± 1.86) vs. 1.55 mm (SD ± 1.80)] and the second radiological follow up after 1 year [3.43 mm (SD ± 2.24) vs. 1.94 (SD ± 2.16)] (p < 0.001, respectively). Stem angulation > 3° had a significant influence on subsidence. Canal flare index and canal fill ratio showed no significant correlation with subsidence as well as BMI and age. Conclusion In the present study, cementless stem subsidence was significantly higher in the group with enhanced recovery rehabilitation compared to partial weight-bearing. Small absolute values and differences were demonstrated and therefore possibly below clinical relevance. Anatomical radiological parameters and anthropometric data did not appear to be risk factors for stem subsidence.

scholarly journals How do orthopaedic surgeons and rehabilitation professionals interpret and assess ‘toe touch’ weight bearing and ‘partial’ weight bearing status in the rehabilitation setting?

2018 ◽  
Vol 4 (1) ◽  
pp. e000326 ◽  
Author(s):  
Stephen G Thompson ◽  
Rhodri D Phillip ◽  
Andrew Roberts
Keyword(s):  
Weight Bearing ◽  
Total Body Weight ◽  
Medical Rehabilitation ◽  
Partial Weight Bearing ◽  
Rehabilitation Centre ◽  
Orthopaedic Surgeons ◽  
Rehabilitation Professionals ◽  
Wide Range ◽  
Significant Difference ◽  
Partial Weight

AimTo compare the interpretation of toe touch weight bearing (TTWB) and partial weight bearing (PWB) among orthopaedic surgeons, rehabilitation professionals and patients.Methodology78 consultant and middle-grade orthopaedic surgeons in the UK completed a questionnaire. 64 rehabilitation professionals (including physiotherapists) at Defence Medical Rehabilitation Centre Headley Court were also recruited. Both groups provided their interpretation of TTWB and PWB as a percentage of total body weight (%TBW). Each rehabilitation professional, then applied what they interpreted to be TTWB and PWB using a Lasar Posture weighing device. The predicted values were compared with the actual values demonstrated.ResultsThere was no significant difference between orthopaedic surgeons and rehabilitation professionals in their interpretation of TTWB and PWB, however there was a wide range of responses. There was a significant difference between the predicted %TBW and the actual values demonstrated by the ‘educated patient’ (mean difference 4.8 (TTWB) and 22.9 (PWB)).ConclusionHealthcare professionals vary greatly in their interpretation of the terms TTWB and PWB. Therefore, for a consistency in rehabilitation delivery the terms should not be used in isolation without a further descriptor. Static measures of weight application are lower than people think they are applying. We encourage the use of loading practice with a scale to reassure and educate patients.

scholarly journals Femoral neck stress fracture in a young female recruit: case report

SICOT-J ◽  
2018 ◽  
Vol 4 ◽  
pp. 16 ◽  
Author(s):  
Hélder Fonte ◽  
Ricardo Rodrigues-Pinto
Keyword(s):  
Femoral Neck ◽  
Stress Fracture ◽  
Early Recognition ◽  
Weight Bearing ◽  
Full Weight Bearing ◽  
Imaging Studies ◽  
Partial Weight Bearing ◽  
Military Recruit ◽  
Femoral Neck Stress Fracture ◽  
Partial Weight

Introduction: Femoral neck stress fractures are uncommon and depending on their location, can be at high risk for non-union and significant morbidity.  Their prevalence is higher among runners and military recruits, and women seem to be at higher risk. Methods: A 27-year-old female, who was enrolled in military recruit, reported left side groin pain after a strenuous running exercise. Due to persistent pain an X-Ray was ordered, which revealed no signs of acute lesions. Further imaging studies with CT scan and MRI identified a compression-type femoral neck stress fracture. Results: The patient was submitted to conservative treatment consisting of restricting from full weight-bearing. Six weeks after she initiated partial weight-bearing, becoming asymptomatic at seven months. Follow-up imaging studies revealed union of the fracture. Discussion: This diagnosis should be considered when evaluating military and athlete populations. Early recognition of these injuries is crucial because complication and morbidity rates are high.

scholarly journals Surgical Repair of Open Achilles Tendon Injuries Using No.1 Prolene to Pull Down the Proximal Tendon: A Safe Technique

1970 ◽  
Vol 21 (2) ◽  
pp. 132-134
Author(s):  
Sayed Ahmed ◽  
Debashis Roy ◽  
S Uddin Ahmed ◽  
M Enamul Haque ◽  
Moshidur Rahman
Keyword(s):  
Suture Material ◽  
Weight Bearing ◽  
Full Range ◽  
Neutral Position ◽  
Partial Weight Bearing ◽  
Active Flexion ◽  
Safe Technique ◽  
Partial Weight ◽  
Distal Tendon

From July 1998 to October 2004 forty-seven patients with open tendo-Achilles injuries were treated pull down the proximal tendon with no.1 prolene. In this surgical method no.1 prolene was threaded through the proximal tendon and the same suture material passed through the distal tendon and its bilateral ends were tightened over the rubber button either under the heel or by the sides of the heel. Box sutures apposed cut ends of the tendon. The ankle was placed in the cast in near neutral position. At six weeks the cast was removed and active flexion program was started. Partial weight bearing was allowed at seven weeks and full bearing was allowed at ten weeks after surgery. The average follow up period is 1.8 years. All the patients exhibited full range of motion at the final follow-up. doi: 10.3329/taj.v21i2.3792 TAJ 2008; 21(2): 132-134

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