The Contributions of Proprioceptive Deficits, Muscle Function, and Anatomic Laxity to Functional Instability of the Ankle

Lentell, Gary; Baas, Brian; Lopez, Darryl; McGuire, Leif; Sarrels, Mike; Snyder, Paul

doi:10.2519/jospt.1995.21.4.206

Cited by 274 publications

(231 citation statements)

References 18 publications

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“…Balance control while subjects were standing on the sound limb was 24 percent better than on the involved limb. This result agrees with Freeman et al [6], Nashner [11], Garn and Newton [12], Tropp and Odenrick [16], Bullock-Saxton et al [22], Lentell et al [9], and Leanderson et al [23], who all reported that impairment of proprioception has a major effect on balance after lateral ankle sprains.…”

Section: Discussionsupporting

confidence: 82%

“…Numerous factors and mechanisms are thought to contribute to this increased ankle sprain occurrence [9]. Some of these factors are instability, muscle weakness, limited mobility of the ankle joint, problems related to footwear, and damage to the proprioceptors in the ligaments of the ankle [6,9]. According to Michelson and Hutchins, two levels of proprioception exist: conscious (voluntary) and unconscious (reflexive).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, previously sprained ankles must have some risk factors that cause them to be recurrently sprained [5]. Numerous factors and mechanisms are thought to contribute to this increased ankle sprain occurrence [9]. Some of these factors are instability, muscle weakness, limited mobility of the ankle joint, problems related to footwear, and damage to the proprioceptors in the ligaments of the ankle [6,9].…”

Section: Introductionmentioning

confidence: 99%

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Balance problems after unilateral lateral ankle sprains

Akbari

Karimi²,

Farahini³

et al. 2006

JRRD

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Abstract-Ankle ligament injury is the most common injury in athletic activities. This study examined balance problems in athletes with acute lateral ankle sprains. Thirty male athletes aged 20 to 35 years with right dominant side and traumatic ankle sprain were recruited through simple nonprobability sampling. We measured the sway index and limits of stability with the Biodex Balance System under different conditions. Functional balance was evaluated with two clinical tests: the Functional Reach Test and the Star-Excursion Balance Test. The results showed that balance ability in patients with acute lateral ankle sprain was significantly weaker under closed-versus open-eye conditions. Symmetry of weight-bearing on involved and sound limb in bilateral standing was not significantly different, but weightbearing on the nondominant limb was significantly higher than on the dominant limb. We can conclude that balance problems occur after acute ankle sprains because of proprioception deficits and that the unconscious (reflexive) aspect of proprioception is more severely affected than the conscious (voluntary) aspect.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Balance problems after unilateral lateral ankle sprains

Akbari

Karimi²,

Farahini³

et al. 2006

JRRD

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“…Alterations in lower extremity kinematics during gait [16][17][18][19] and jump landings 20,21 also are evident in individuals with CAI, whereas strength deficits are controversial. [22][23][24][25][26] It is unclear whether these deficits and alterations occur in individuals before or after an initial ankle sprain.…”

mentioning

confidence: 99%

Lower Extremity Muscle Activation in Patients With or Without Chronic Ankle Instability During Walking

Feger

Donovan

Hart

et al. 2015

Journal of Athletic Training

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Context: Ankle sprains are among the most common musculoskeletal injuries, and many individuals with ankle sprains develop chronic ankle instability (CAI). Individuals with CAI exhibit proprioceptive and postural-control deficits, as well as altered osteokinematics, during gait. Neuromuscular activity is theorized to play a pivotal role in CAI, but deficits during walking are unclear.Objective: To compare motor-recruitment patterns as demonstrated by surface electromyography amplitudes between participants with CAI and healthy control participants during walking.Design: Descriptive laboratory study. Setting: Laboratory.Patients or Other Participants: Fifteen adults with CAI (5 men, 10 women; age ¼ 23 6 4.2 years, height ¼ 173 6 10.8 cm, mass ¼ 72.4 6 14 kg) and 15 matched healthy control adults (5 men, 10 women; age ¼ 22.9 6 3.4 years, height ¼ 173 6 9.4 cm, mass ¼ 70.8 6 18 kg).Intervention(s): Participants walked shod on a treadmill while surface electromyography signals were recorded from the anterior tibialis, peroneus longus, lateral gastrocnemius, rectus femoris, biceps femoris, and gluteus medius muscles.Main Outcome Measure(s): Preinitial contact amplitude, postinitial contact amplitude, time of activation relative to initial contact, and percentage of activation time across the stride cycle were calculated for each muscle.Results: Time of activation for all muscles tested occurred earlier in the CAI group than in the control group. The peroneus longus was activated for a longer duration across the entire stride cycle in the CAI group (36.0% 6 10.3%) than the control group (23.3% 6 22.2%; P ¼ .05). No differences were noted between groups for measures of electromyographic amplitude at either preinitial or postinitial contact (P . .05).Conclusions: We identified differences between the CAI and control groups in the timing of muscle activation relative to heel strike in multiple lower extremity muscles and in the percentage of activation time across the entire stride cycle in the peroneus longus muscle. Individuals with CAI demonstrated neuromuscular-activation strategies throughout the lower extremity that were different from those of healthy control participants. Targeted therapeutic interventions for CAI may need to be focused on restoring normal neuromuscular function during gait.

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“…Die gleiche Autorengruppe fand jedoch in 2 anderen Untersuchungen keine Unterschiede zu Personen mit stabilen Gelenken [16,17]. Weitere Studien stellten bei Probanden mit einseitiger Instabilität im Seitenvergleich kinästhetische Defizite am instabilen Sprunggelenk fest [18,19], während Hubbard und Kaminsky [20] keine Differenzen im Seitenvergleich verifizieren konnten. Zur Untersuchung des Kraftsinns bei Patienten mit funktioneller Sprunggelenkinstabilität liegen ebenfalls nur wenige Arbeiten vor [21][22][23][24].…”

Section: Propriozeptionunclassified

Beeinträchtigungen der sensomotorischen Kontrolle bei funktioneller Sprunggelenkinstabilität

Steib

Pfeifer

2015

Z Orthop Unfall

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!Lateral ankle sprains are among the most common sports injuries, with a prevalence of 25 to 30 % of all injuries. At least one-third of individuals develop long-term complaints and chronic instabilities at the ankle, which in many cases cannot be attributed to mechanical insufficiencies of the joint. This condition is referred to as functional ankle instability (FAI). Impairments of the sensorimotor control system, such as disturbed proprioception and postural control, as well as reduced muscle strength and reflex activity, have been suggested to contribute to the aetiology of FAI. This review summarises the current body of literature regarding sensorimotor control in individuals with FAI. We discuss the results in the context of current neurophysiological models of the development of functional joint instabilities.

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The Contributions of Proprioceptive Deficits, Muscle Function, and Anatomic Laxity to Functional Instability of the Ankle

Cited by 274 publications

References 18 publications

Balance problems after unilateral lateral ankle sprains

Balance problems after unilateral lateral ankle sprains

Lower Extremity Muscle Activation in Patients With or Without Chronic Ankle Instability During Walking

Beeinträchtigungen der sensomotorischen Kontrolle bei funktioneller Sprunggelenkinstabilität

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