Corrigendum to “Neural and muscular factors both contribute to plantar-flexor muscle weakness in older fallers” [Exp. Gerontol. 112 (2018) 127–134]

We aimed to study intrinsic factors in 29 consecutive patients with well-documented unilateral stress fractures of the tibia. Anthropometry, range of motion, isokinetic plantar flexor muscle performance, and gait pattern were analyzed. The uninjured leg served as the control. A reference group of 30 uninjured subjects was compared regarding gait pattern. Anterior stress fractures of the tibia (N = 10) were localized in the push-off/ landing leg in 9/10 athletes, but were similarly distributed between legs in posteromedial injuries (N = 19). Ten (30%) of the stress fracture subjects had bilateral high foot arches, similar to those found in the reference group. There were no other systematic differences in anthropometry, range of motion, gait pattern, or isokinetic plantar flexor muscle peak torque and endurance between injured and uninjured legs. No other differences were found between anterior and posteromedial stress fractures. We conclude that anterior stress fractures of the tibia occur mainly in the push-off/landing leg in athletes. Within the limitations of our protocol, no registered intrinsic factor was found to be directly associated with the occurrence of a stress fracture of the tibia.

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

Physical Therapy ◽

10.1093/ptj/80.4.352 ◽

2000 ◽

Vol 80 (4) ◽

pp. 352-362 ◽

Cited By ~ 60

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.

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Corrigendum to “Neural and muscular factors both contribute to plantar-flexor muscle weakness in older fallers” [Exp. Gerontol. 112 (2018) 127–134]

Effects of plantar flexor muscle weakness on children with spastic cerebral palsy – Pilot study

Neural and muscular factors both contribute to plantar-flexor muscle weakness in older fallers

Plantar flexor muscle weakness and fatigue in spastic cerebral palsy patients

Plantar flexor muscle weakness leads to stiff-knee gait

Plantar flexor muscle weakness may cause stiff-knee gait

Plantar flexor muscle stretching depresses the soleus late response but not tendon tap reflexes

Plantar flexor muscle action while sitting, standing and prone in patients with upper motor neuron lesion due to stroke

Effects of Plantar Flexor Muscle Static Stretching Alone and Combined With Massage on Postural Balance

A Study of Intrinsic Factors in Patients with Stress Fractures of the Tibia

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

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