Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee

Schmalz, Thomas; Knopf, Elmar; Drewitz, Heiko; Blumentritt, Siegmar

doi:10.1682/jrrd.2009.05.0067

Cited by 59 publications

(85 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, we were not able to support our second hypothesis that the strap would decrease knee adduction loading. Lack of change in the external knee adduction moment in the braced versus control condition found in this study is similar to findings reported in other studies [20, 26, 27]. These studies specifically evaluated valgus bracing and found that it had no effect on peak knee adduction moment during stance.…”

Section: Discussionsupporting

confidence: 90%

See 1 more Smart Citation

The Effect of Hip Bracing on Gait in Patients with Medial Knee Osteoarthritis

Wallace

Barr

2012

Arthritis

View full text Add to dashboard Cite

Objective. Impaired hip motion has been associated with heightened medial knee joint loading in patients with knee osteoarthritis (OA). A hip external rotation strap designed to pull the femur into external rotation and abduction may serve as one protective mechanism. The primary aim of our study is to determine if the strap decreases medial knee joint loading during level walking in people with knee OA. Design. This study is a single-day repeated measures design. Methods. 15 volunteers with medial knee OA underwent motion analysis data collection during two randomly assigned walking conditions: (1) wearing the strap and (2) control (no strap). Primary outcome measures were peak pelvis, hip and knee joint motions, and torques. These outcomes were averaged across five trials for each condition. Results. Hip abduction (P < 0.01), trunk lean towards the stance limb (P = 0.04) and pelvic tilt (P = 0.02) significantly increased with the strap versus control trials. Knee adduction loading did not significantly change with the strap (P = 0.33). Conclusion. The use of the hip external rotation strap resulted in angular changes at the hip and pelvis which may be beneficial for patients with medial knee osteoarthritis.

show abstract

Section: Discussionsupporting

confidence: 90%

“…One study noted a limitation that most patients did not wear the brace consistently enough to adhere to the treatment protocol [23]. Valgus bracing does seem to reduce pain and improve function in some studies, but it does not appear to decrease medial compartment loading or slow disease progression on a consistent basis [20, 21, 23]. …”

Section: Introductionmentioning

confidence: 99%

The Effect of Hip Bracing on Gait in Patients with Medial Knee Osteoarthritis

Wallace

Barr

2012

Arthritis

View full text Add to dashboard Cite

show abstract

“…However, the results of the research undertaken by Schmalz et al (2011) showed that using the knee orthosis did not influence the adduction force applied to the foot [21]. In contrast, in the current research, there was an increase in the magnitude of the vertical force, especially in subject 2.…”

Section: Discussioncontrasting

confidence: 77%

Design and Evaluation of a New Type of Knee Orthosis to Align the Mediolateral Angle of the Knee Joint with Osteoarthritis

Esrafilian

Karimi

Eshraghi

2012

Advances in Orthopedics

View full text Add to dashboard Cite

Background. Osteoarthritis (OA) is a disease which influences the performance of the knee joint. Moreover, the force and moments applied on the joint increase in contrast to normal subjects. Various types of knee orthoses have been designed to solve the mentioned problems. However, there are other problems in terms of distal migration during walking and the alignment of the orthosis which cannot be changed following the use of brace. Therefore, the main aim of the research was to design an orthosis to solve the aforementioned problems. Method. A new type of knee orthosis was designed with a modular structure. Two patients with knee OA participated in this research project. The force applied on the foot, moment transmitted through the knee joint, and spatiotemporal gait parameters were measured by use of a motion analysis system. Results. The results of the research showed that the adduction moment applied on the knee joint decreased while subjects walked with the new knee orthosis (P-value < 0.05). Conclusion. The new design of the knee brace can be used as an effective treatment to decrease the loads applied on the knee joint and to improve the alignment whilst walking.

show abstract

“…But after wearing the brace, the knee joints are stabilized, and the activation of the VMO significantly decreased in both the stance phase and the swing phase. Up until now, the existing studies analyzed the size of the external moment that occurs at the time of use of the off-loading brace by using the 3-D gait analysis system with the patients of degenerative arthritis of the knee as the subject,15,16 or mainly checked the changes in pain following the load decrease of the medial side knee joints by measuring the widening of the space in the medial compartment of knee joints using fluoroscopy 12,28. However, this study analyzed the changes of the activity of the muscles around the femoral region after using the off-loading knee brace with normal people as the subject, and it is thought that in the state where the knee joint load is large and unstable, the brace significantly decreased the activation of the VMO.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the effects of the external moment of the brace that increase the weight load to the affected leg during the stance phase by reducing the pain of knee joints at the time of walking, and increase the speed of walking by reducing the imbalance of the step length with the non-affected leg, were reported 16. In these instances, as the effects of the off-loading knee brace decrease knee joint pain by reducing the load from the medial compartment of narrowed knee cartilage, the demand for the off-loading knee brace is on the rise in Korea.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Off-Loading Brace on the Activation of Femoral Muscles -A Preliminary Study-

et al. 2011

View full text Add to dashboard Cite

ObjectiveTo provide the off-loading knee brace was designed relief for the pain associated with osteoarthritis by reduce loads on the degenerative compartment of the knee. This study examined the effects of the off-loading knee brace on activation of femoral muscles during squatting, slow and fast walking exercise in healthy young individuals.MethodTen healthy male subjects without a history of knee pain were recruited. Each subject was asked to do squatting, slow and fast walking exercises with a brace secured to the dominant leg. The same exercises were repeated without the brace. Surface electromyographic (sEMG) data was collected from the vastus medialis oblique (VMO), vastus lateralis (VL) and biceps femoris (BF) muscles from the dominant side of the leg. All dynamic root mean squre (RMS) values of sEMG were standardized to static RMS values of the maximal isometric contraction and expressed as a percentage of maximal activity.ResultsWe found that VMO activity was significantly decreased with application of the off-loading knee brace during squatting and fast walking exercise. However there were no significant differences in VMO activity with application of the off-loading knee brace during slow walking exercise.ConclusionThese results suggest that the external moment of the brace which effectively stabilized the patella in the movement in which the knee joints become relatively unstable. The brace could be useful in the short term, but for long-term use, weakening of the VMO is predicted. Therefore the program of selective muscular strength strengthening for the VMO should be emphasized.

show abstract

Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee

Cited by 59 publications

References 22 publications

The Effect of Hip Bracing on Gait in Patients with Medial Knee Osteoarthritis

The Effect of Hip Bracing on Gait in Patients with Medial Knee Osteoarthritis

Design and Evaluation of a New Type of Knee Orthosis to Align the Mediolateral Angle of the Knee Joint with Osteoarthritis

Effects of the Off-Loading Brace on the Activation of Femoral Muscles -A Preliminary Study-

Contact Info

Product

Resources

About