Bedeutung der ischamischen Präkonditionierung beim Ischämie/Reperfusionsschaden der Skelettmuskulatur

Schoen, Matthias; Eipel, Christian; Gierer, Philip; Gradl, Georg; Rotter, Robert; Mittlmeier, Thomas; Vollmar, Brigitte

doi:10.1007/3-540-34668-6_98

Cited by 1 publication

(1 citation statement)

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“…It is believed that one of the main reasons for persistent weakness may be peripheral muscle changes (12,15,19). It was reported that the use of pneumatic tourniquets may cause muscle necrosis based on perfusion injury and that this process is time-dependent (20)(21)(22). The average tourniquet time of 59, 75 minutes in our study was not long enough for necrosis to occur.…”

Section: Discussioncontrasting

confidence: 57%

Neuromuscular Functional Changes of the Quadriceps after ACL Reconstruction

Çiçekli¹,

Bingöl²,

Tepe³

et al. 2016

West Indian Med J

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Purpose: To determine the factors related to quadriceps weakness, to evaluate electromyographic changes in the quadriceps and to attempt to determine the neuromuscular restoration period after anterior cruciate ligament repair (ACLR). Methods: In all, 30 patients (28 male and 2 female) who underwent surgery conducted by two surgeons were reviewed prospectively. All ACLs were reconstructed arthroscopically with anterior tibial tendon allograft using an anteromedial portal. The patients' quadriceps muscles' neuromuscular activity was determined with electromyography (EMG) at early and late periods (1-3 months and 6-12 months, respectively). Results: A significant difference was observed (p<0.01) in the quadriceps circumference between the operated extremities (average, 48.4 cm) and the healthy limbs (average, 50.6 cm) according to measurements obtained on the 6th month after surgery. The tourniquet time was greater than 50 minutes in patients with quadriceps atrophy. A significant elongation was observed in the MUP duration of the operated ipsilateral side compared to the contralateral side (p<0.001) at the early-term period. Differences were observed between the ipsilateral MUP amplitude and the durations of early-and late-term patients but were not significant. Conclusions: Our study demonstrated that atrophies are significantly overcome in the first year after surgery. The electromyographic examinations indicated that tourniquet use not only caused functional harm in the quadriceps muscle but it also caused structural damage. However, these structural injuries did not result in negative effects on the clinical success.

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