scholarly journals Increased Passive Ankle Stiffness and Reduced Dorsiflexion Range of Motion in Individuals With Diabetes Mellitus

2006 ◽  
Vol 27 (8) ◽  
pp. 617-622 ◽  
Author(s):  
Smita R. Rao ◽  
Charles L. Saltzman ◽  
Jason Wilken ◽  
H. John Yak
Keyword(s):  
Diabetes Mellitus ◽  
Range Of Motion ◽  
Ankle Stiffness

scholarly journals Reliability of Bi-Axial Ankle Stiffness Measurement in Older Adults

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1162
Author(s):  
Hogene Kim ◽  
Sangwoo Cho ◽  
Hwiyoung Lee
Keyword(s):  
Older Adults ◽  
Range Of Motion ◽  
Angular Displacement ◽  
Plantar Flexion ◽  
Significant Negative Correlation ◽  
Talocrural Joint ◽  
Ankle Foot Orthosis ◽  
Ankle Stiffness ◽  
Ankle Movement ◽  
Test Retest Reliability

This study involves measurements of bi-axial ankle stiffness in older adults, where the ankle joint is passively moved along the talocrural and subtalar joints using a custom ankle movement trainer. A total of 15 elderly individuals participated in test–retest reliability measurements of bi-axial ankle stiffness at exactly one-week intervals for validation of the angular displacement in the device. The ankle’s range of motion was also compared, along with its stiffness. The kinematic measurements significantly corresponded to results from a marker-based motion capture system (dorsi-/plantar flexion: r = 0.996; inversion/eversion: r = 0.985). Bi-axial ankle stiffness measurements showed significant intra-class correlations (ICCs) between the two visits for all ankle movements at slower (2.14°/s, ICC = 0.712) and faster (9.77°/s, ICC = 0.879) speeds. Stiffness measurements along the talocrural joint were thus shown to have significant negative correlation with active ankle range of motion (r = −0.631, p = 0.012). The ankle movement trainer, based on anatomical characteristics, was thus used to demonstrate valid and reliable bi-axial ankle stiffness measurements for movements along the talocrural and subtalar joint axes. Reliable measurements of ankle stiffness may help clinicians and researchers when designing and fabricating ankle-foot orthosis for people with upper-motor neuron disorders, such as stroke.

scholarly journals Passive Ankle Stiffness in Subjects With Diabetes and Peripheral Neuropathy Versus an Age-Matched Comparison Group

2000 ◽  
Vol 80 (4) ◽  
pp. 352-362 ◽  
Author(s):  
Gretchen B Salsich ◽  
Michael J Mueller ◽  
Shirley A Sahrmann
Keyword(s):  
Peripheral Neuropathy ◽  
Range Of Motion ◽  
Comparison Group ◽  
Plantar Flexor ◽  
Initial Angle ◽  
Flexor Muscle ◽  
Ankle Stiffness ◽  
Torque Curve ◽  
Muscle Excursion ◽  
Matched Comparison

Abstract Background and Purpose. Patients with diabetes mellitus and peripheral neuropathy (DM and PN) often complain of joint stiffness. Although stiffness may contribute to some of the impairments and functional limitations found in these patients, it has not been quantified in this population. The purpose of this study was to quantify and compare passive ankle stiffness and dorsiflexion (DF) range of motion in subjects with DM and PN versus an age-matched comparison group. Subjects. Thirty-four subjects were tested (17 subjects with DM and PN and 17 subjects in an age-matched comparison group). There were 10 male subjects and 7 female subjects in each group. Methods. A Kin-Com dynamometer was used to measure passive plantar flexor torque as each subject's ankle was moved from plantar flexion into dorsiflexion at 60°/s. The following variables were compared using a Student t test: initial angle (angle of onset of plantar flexor torque), maximal dorsiflexion angle, plantar flexor muscle excursion (difference between initial angle and maximal dorsiflexion angle), slope of the first half of the plantar flexor torque curve (stiffness 1 measurement), and slope of the second half of the plantar flexor torque curve (stiffness 2 measurement). Results. The subjects with DM and PN group had smaller maximal dorsiflexion angles and less plantar flexor muscle excursion than the comparison group. There was no difference in initial angle, stiffness 1 measurement, or stiffness 2 measurement. Conclusion and Discussion. Although the subjects with DM and PN had less dorsiflexion range of motion than did the comparison group, there was no difference in stiffness between the groups. This finding suggests that people with DM and PN have “short” versus “stiff” plantar flexor muscles.

Percutaneous Tendo Achillis Lengthening to Promote Healing of Diabetic Plantar Foot Ulceration

2005 ◽  
Vol 95 (3) ◽  
pp. 281-284 ◽  
Author(s):  
Amanda Willrich ◽  
Arush K. Angirasa ◽  
Ronald A. Sage
Keyword(s):  
Diabetes Mellitus ◽  
Range Of Motion ◽  
Plantar Pressure ◽  
Case Reports ◽  
Shear Forces ◽  
Foot Ulceration ◽  
Crucial Component ◽  
Patients With Diabetes ◽  
Tendo Achillis ◽  
Viable Treatment

The etiology of ulcerations related to increased plantar pressure in patients with diabetes mellitus is complex but frequently includes a component of gastrocnemius soleus equinus. One viable treatment option is percutaneous tendo Achillis lengthening as a means of increasing dorsiflexory range of motion and decreasing forefoot shear forces. This article presents three case reports illustrating the importance of reducing plantar pressure as a crucial component of treatment of diabetic forefoot ulcerations. (J Am Podiatr Med Assoc 95(3): 281–284, 2005)

Design of an Ankle Stiffness Testing and Therapeutic Device

2014 ◽  
Author(s):  
Yong Zhu ◽  
Li Li ◽  
Spencer Harp
Keyword(s):  
Diabetes Mellitus ◽  
Significant Role ◽  
Healthy Subjects ◽  
Foot Ulcers ◽  
Foot And Ankle ◽  
Ankle Stiffness ◽  
Therapeutic Device ◽  
The Relationship

The research objective of this project is to design an ankle stiffness testing and therapeutic device. The hypothesis is that the ankle stiffness of people afflicted with diabetes mellitus (DM) is significantly different from that of healthy subjects. The validation of this hypothesis will allow us to clarify the relationship between ankle stiffness and ulceration or other pathologies. If we can use this objective device to prove that increased stiffness does play a significant role in ulcerations and other pathologies of the foot and ankle, the same device can also be used as a therapeutic device to help reduce ankle stiffness and thus prevent foot ulcers.

Clinical and Dynamic Range-of-Motion Techniques in Subjects With and Without Diabetes Mellitus

2002 ◽  
Vol 92 (3) ◽  
pp. 136-142 ◽  
Author(s):  
Paul Tinley ◽  
Michael Taranto
Keyword(s):  
Diabetes Mellitus ◽  
Type 1 Diabetes ◽  
Range Of Motion ◽  
Dynamic Range ◽  
Control Group ◽  
Limited Joint Mobility ◽  
Study Results ◽  
Patients With Diabetes ◽  
Female Subjects

Thirty subjects with type 1 diabetes, 30 subjects with type 2 diabetes, and 30 age- and sex-matched controls were evaluated through clinical goniometry and two-dimensional motion analysis systems to determine the dynamic and static range of motion of the knee, ankle, and hallux joints. The purpose of this study was to determine if the knee and ankle joints of patients with diabetes mellitus are affected by limited joint mobility syndrome. The study results support previous medical literature showing significant reduction of range of motion of the hallux in subjects with type 1 diabetes. Significant differences were found between the range of motion of male and female subjects in all lower-limb joints for both subject groups with diabetes compared to the control group, and male subjects in all groups recorded less range of motion than female subjects. (J Am Podiatr Med Assoc 92(3): 136-142, 2002)

Sex and Stride Impact Joint Stiffness During Loaded Running

2020 ◽  
pp. 1-7
Author(s):  
Tyler N. Brown ◽  
AuraLea C. Fain ◽  
Kayla D. Seymore ◽  
Nicholas J. Lobb
Keyword(s):  
Range Of Motion ◽  
Analysis Of Variance ◽  
Lower Limb ◽  
Injury Risk ◽  
Mixed Model ◽  
Joint Stiffness ◽  
Mixed Model Analysis ◽  
Joint Compliance ◽  
Ankle Stiffness ◽  
Flexion Moment

This study determined changes in lower limb joint stiffness when running with body-borne load, and whether they differ with stride or sex. Twenty males and 16 females had joint stiffness quantified when running (4.0 m/s) with body-borne load (20, 25, 30, and 35 kg) and 3 stride lengths (preferred or 15% longer and shorter). Lower limb joint stiffness, flexion range of motion (RoM), and peak flexion moment were submitted to a mixed-model analysis of variance. Knee and ankle stiffness increased 19% and 6% with load (P < .001, P = .049), but decreased 8% and 6% as stride lengthened (P = .004, P < .001). Decreased knee RoM (P < .001, 0.9°–2.7°) and increased knee (P = .007, up to 0.12 N.m/kg.m) and ankle (P = .013, up to 0.03 N.m/kg.m) flexion moment may stiffen joints with load. Greater knee (P < .001, 4.7°–5.4°) and ankle (P < .001, 2.6°–7.2°) flexion RoM may increase joint compliance with longer strides. Females exhibited 15% stiffer knee (P = .025) from larger reductions in knee RoM (4.3°–5.4°) with load than males (P < .004). Stiffer lower limb joints may elevate injury risk while running with load, especially for females.

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