Browsing by Author "Henriquez, Hugo"

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    Biomechanical properties of different techniques used in vitro for suturing mid-substance Achilles tendon ruptures
    (2017) De la Fuente, Carlos; Cruz Montecinos, Carlos; Schimidt, Helen L.; Henriquez, Hugo
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    Changes in the ankle muscles co-activation pattern after 5 years following total ankle joint replacement
    (2018) De la Fuente, Carlos; Martinez-Valdes, Eduardo; Cruz-Montecinos, Carlos; Guzman-Venegas, Rodrigo; Arriagada, David; Pena y Lillo, Roberto; Henriquez, Hugo; Carpes, Felipe P.
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    Do the heel-rise test and isometric strength improve after Achilles tendon repair using Dresden technique?
    (2022) De la Fuente, Carlos; Henriquez, Hugo; Carmont, Michael R.; Huincahue, Javiera; Paredes, Tamara; Tapia, Maria; Araya, Juan Pablo; Diaz, Nicolas; Carpes, Felipe P.
    Background: Achilles' tendon ruptures result in impaired plantar flexion strength and endurance. It is interesting to know the plantar flexion strength, the number of heel-rise repetitions, and the maximal calf circumference following Achilles' tendon ruptures repair. Methods: Both the injured and non-injured legs of thirty male patients with Achilles' tendon ruptures treated with the percutaneous Dresden technique were compared with the ankle function of 30 healthy participants. Rehabilitation involved partial weight-bearing for three weeks and then increased to full weight-bearing and ankle exercises. Results: The injured legs had weaker plantar flexion strength (1.64 +/- 0.17 Nm/kg) compared with the non-injured legs (1.91 +/- 0.24 Nm/kg; p = 0.002) and the healthy participants' legs (1.93 +/- 0.32 Nm/kg; p < 0.001). The non-injured leg had greater ability in doing heel-rise repetitions (39.4 +/- 6.1 rep.) compared with the injured legs (37.2 +/- 5.7 rep.; p < 0.023) and the healthy participants' legs (31.0 +/- 13.0 rep.; p < 0.001). Conclusions: The injured leg had not recovered full isometric strength but had improved heel-rise repetition. (c) 2021 European Foot and Ankle Society. Published by Elsevier Ltd. All rights reserved.
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    Early Short-Term Recovery of Single-Leg Heel Rise and ATRS After Achilles Tenorrhaphy: Cluster Analysis
    (2018) De la Fuente, Carlos; Cruz Montecinos, Carlos; De La Fuente, Constanza; Pena y Lillo, Roberto; Chamorro Lange, Claudio Hernán; Henriquez, Hugo
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    Pattern analysis of a complete Achilles tendon rupture suffered during high jump preparation in an official national-level athletic competition
    (2022) De la Fuente, Carlos; Ramirez-Campillo, Rodrigo; Gallardo-Fuentes, Francisco; Alvarez, Cristian; Bustamante, Carlos; Henriquez, Hugo; Carpes, Felipe P.
    Elite athletes are subject to injuries like the Achilles tendon rupture. This injury requires a long recovery process, with no guarantee of returning to the pre-injury level. When a rupture happens during natural life, movement analysis can provide useful insights concerning patterns of rupture to understand and prevent Achilles tendon injuries. Here we determined the pattern of rupture of an Achilles tendon (AT) in an elite high-jumper athlete who ruptured an AT during the straight line running phase in preparation for a high-jump attempt. This study is a novel case report regarding a national-level elite athlete. The main outcomes were kinematics parameters obtained from video analysis. The pattern of the rupture was determined by pixel intensity and outlier analysis. The rupture occurred at 44% of the single stance. The injured leg showed a higher ankle dorsal flexion and knee-ankle ratio, and a lower knee flexion compared to contralateral leg. An eccentric pattern of rupture occurred during the transition from the mid to terminal stance phases of running. The lower knee flexion and the increased ankle dorsal flexion during the stance suggest a loss of knee-ankle coordination. This might have favoured a major elongation of Achilles tendon causing the rupture.