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

1996 ◽  
Vol 17 (8) ◽  
pp. 477-482 ◽  
Author(s):  
Ingrid Ekenman ◽  
Li Tsai-Felländer ◽  
Pär Westblad ◽  
Ibrahim Turan ◽  
Christer Rolf
Keyword(s):  
Range Of Motion ◽  
Stress Fracture ◽  
Reference Group ◽  
Intrinsic Factor ◽  
Gait Pattern ◽  
Stress Fractures ◽  
Muscle Performance ◽  
Plantar Flexor ◽  
Flexor Muscle ◽  
Intrinsic Factors

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.

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.

scholarly journals Effects of Vibration Rolling with and without Dynamic Muscle Contraction on Ankle Range of Motion, Proprioception, Muscle Strength and Agility in Young Adults: A Crossover Study

2020 ◽  
Vol 17 (1) ◽  
pp. 354 ◽  
Author(s):  
Bo-Jhang Lyu ◽  
Chia-Lun Lee ◽  
Wen-Dien Chang ◽  
Nai-Jen Chang
Keyword(s):  
Young Adults ◽  
Muscle Strength ◽  
Muscle Contraction ◽  
Range Of Motion ◽  
Exercise Performance ◽  
Plantar Flexion ◽  
Ankle Dorsiflexion ◽  
Plantar Flexor ◽  
Flexor Muscle ◽  
Warm Up

Vibration rolling (VR) has emerged as a self-myofascial release (SMR) tool to aid exercise performance when warming up. However, the benefits of VR on exercise performance when combined with dynamic muscle contraction are unclear. The purpose of this study was to investigate the immediate effects of the combination of VR with dynamic muscle contraction (DVR), VR, and static stretching (SS) during warm-up on range of motion (ROM), proprioception, muscle strength of the ankle, and agility in young adults. In this crossover design study, 20 recreationally active adults without musculoskeletal disorders completed three test sessions in a randomized order, with 48 h of rest between each session. Participants completed one warm-up intervention and its measurements on the same day; different warm-up interventions and measurements were performed on each of the three days. The measurements included ankle dorsiflexion and plantarflexion ROM, ankle joint proprioception, muscle strength, and agility. After DVR and VR intervention, ankle dorsiflexion ROM (both DVR and VR, p < 0.001), plantarflexion ROM (both DVR and VR, p < 0.001), plantar flexor muscle strength (DVR, p = 0.007; VR, p < 0.001), and agility (DVR, p = 0.016; VR, p = 0.007) significantly improved; after SS intervention, ankle dorsiflexion and plantar flexion ROM (dorsiflexion, p < 0.001; plantar flexion, p = 0.009) significantly improved, but muscle strength and agility were not enhanced. Compared with SS, DVR and VR significantly improved ankle plantar flexor muscle strength (p = 0.008 and p = 0.001, respectively). Furthermore, DVR significantly improved ankle dorsiflexion compared with VR (p < 0.001) and SS (p < 0.001). In conclusion, either DVR, VR, or SS increased ankle ROM, but only DVR and VR increased muscle strength and agility. In addition, DVR produced considerable increases in ankle dorsiflexion. These findings may have implications for warm-up prescription and implementation in both rehabilitative and athletic practice settings.

Ankle plantar flexor muscle performance and patient reported outcomes in people following total ankle arthroplasty

2022 ◽  
pp. 105576
Author(s):  
Frank E. DiLiberto ◽  
Anand M. Vora ◽  
Walter C. Wilson ◽  
Steven A. Miller ◽  
Stacey A. Meardon ◽  
...  
Keyword(s):  
Patient Reported Outcomes ◽  
Total Ankle Arthroplasty ◽  
Muscle Performance ◽  
Plantar Flexor ◽  
Flexor Muscle ◽  
Ankle Arthroplasty ◽  
Patient Reported

scholarly journals Passive stiffness of the ankle and plantar flexor muscle performance after Achilles tendon repair: a cross-sectional study

2017 ◽  
Vol 21 (1) ◽  
pp. 51-57 ◽  
Author(s):  
Pollyana R.T. Borges ◽  
Thiago R.T. Santos ◽  
Paula R.S. Procópio ◽  
Jessica H.D. Chelidonopoulos ◽  
Roberto Zambelli ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Tendon Repair ◽  
Cross Sectional Study ◽  
Muscle Performance ◽  
Plantar Flexor ◽  
Passive Stiffness ◽  
Sectional Study ◽  
Flexor Muscle ◽  
Cross Sectional ◽  
Achilles Tendon Repair

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

2021 ◽  
Author(s):  
Timothy S. Pulverenti ◽  
Gabriel S. Trajano ◽  
Benjamin J. C. Kirk ◽  
Vanesa Bochkezanian ◽  
Anthony J. Blazevich
Keyword(s):  
Late Response ◽  
Plantar Flexor ◽  
Flexor Muscle ◽  
Muscle Stretching ◽  
Tendon Tap

Specificity in Retraining Craniocervical Flexor Muscle Performance

2007 ◽  
Vol 37 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Shaun O'Leary ◽  
Gwendolen Jull ◽  
Mehwa Kim ◽  
Bill Vicenzino
Keyword(s):  
Muscle Performance ◽  
Flexor Muscle

Stress fracture in a ceratopsian phalanx

1988 ◽  
Vol 62 (2) ◽  
pp. 302-303 ◽  
Author(s):  
Bruce M. Rothschild
Keyword(s):  
Fatigue Fracture ◽  
Stress Fracture ◽  
Fracture Stress ◽  
Stress Fractures ◽  
Periosteal Reaction ◽  
Stress Fatigue

A prominent anterior bulge on a ceratopsian dinosaur phalanx was examined for evidence of infection or stress (fatigue) fracture. The presence of a knife-slice type radiolucency, associated with periosteal reaction, was pathognomonic (diagnostic) for a stress fracture. Stress fractures have previously been recognized only in humans, racing greyhounds, and horses.

EFFICACY OF PRESSURE-BIOFEEDBACK GUIDED DEEP CERVICAL FLEXOR TRAINING ON NECK PAIN AND MUSCLE PERFORMANCE IN VISUAL DISPLAY TERMINAL OPERATORS

2013 ◽  
Vol 16 (03) ◽  
pp. 1350011 ◽  
Author(s):  
Md. Nezamuddin ◽  
Shahnawaz Anwer ◽  
Sohrab Ahmad Khan ◽  
Ameed Equebal
Keyword(s):  
Neck Pain ◽  
Pain Intensity ◽  
Exercise Program ◽  
Visual Display ◽  
Muscle Performance ◽  
Control Group ◽  
Women Patients ◽  
Flexor Muscle ◽  
Visual Display Terminal ◽  
Pressure Biofeedback

Purpose: This randomized trial study compared the efficacy of pressure-biofeedback guided deep cervical flexor training as an adjunct with conventional exercise on pain and muscle performance in visually displayed terminal operators. Methods: A total of 50 (22 men and 28 women) patients with neck pain participated in the study. Patients were randomly placed into two groups: a biofeedback group (n = 25) and a control group (n = 25). The biofeedback group received pressure-biofeedback guided deep cervical flexor training program for 5 days a week for 6 weeks, whereas the control group received an exercise program only. Results: On intergroup comparisons, the deep cervical flexor performance in biofeedback group, at the end of 6th week was significantly higher than those of control group (p < 0.01). Pain intensity was also significantly reduced in biofeedback group when compared to control group at the end of trial (p < 0.004). Conclusion: The addition of pressure-biofeedback to a 6-week conventional program appeared to increase deep cervical flexor muscle performance, compared to the exercise program alone for people with reduced muscle performance.

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