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Jalali M, Farahmand F, Mousavi SM, et al. Fluoroscopic Analysis of Tibial Translation in Anterior Cruciate Ligament Injured Knees With and Without Bracing During Forward Lunge. Iran J Radiol. 2015;12(3):e17832doi: 10.5812/iranjradiol.17832v2.
Jalali, M., Farahmand, F., Mousavi, S. M., Golestanha, S. A., Rezaeian, T., Shirvani Broujeni, S., Rahgozar, M., & Esfandiarpour, F. (2015). Fluoroscopic Analysis of Tibial Translation in Anterior Cruciate Ligament Injured Knees With and Without Bracing During Forward Lunge. Iranian journal of radiology : a quarterly journal published by the Iranian Radiological Society, 12(3), e17832. https://doi.org/10.5812/iranjradiol.17832v2
Jalali, Maryam, et al. "Fluoroscopic Analysis of Tibial Translation in Anterior Cruciate Ligament Injured Knees With and Without Bracing During Forward Lunge." Iranian journal of radiology : a quarterly journal published by the Iranian Radiological Society vol. 12,3 (2015): e17832. doi: https://doi.org/10.5812/iranjradiol.17832v2
Jalali M, Farahmand F, Mousavi SM, Golestanha SA, Rezaeian T, Shirvani Broujeni S, Rahgozar M, Esfandiarpour F. Fluoroscopic Analysis of Tibial Translation in Anterior Cruciate Ligament Injured Knees With and Without Bracing During Forward Lunge. Iran J Radiol. 2015 Jul 22;12(3):e17832. doi: 10.5812/iranjradiol.17832v2. eCollection 2015 Jul. PMID: 26557277; PMCID: PMC4632562.
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Iran J Radiol. 2015 Jul 22;12(3):e17832. doi: 10.5812/iranjradiol.17832v2. eCollection 2015 Jul.

Fluoroscopic Analysis of Tibial Translation in Anterior Cruciate Ligament Injured Knees With and Without Bracing During Forward Lunge.

Iranian journal of radiology : a quarterly journal published by the Iranian Radiological Society

Maryam Jalali, Farzam Farahmand, Seyed Mohammad Ebrahim Mousavi, Seyed Ali Golestanha, Tahmineh Rezaeian, Shahram Shirvani Broujeni, Mehdi Rahgozar, Fateme Esfandiarpour

Affiliations

  1. Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran ; Iran Helal Institute of Applied Sciences and Technology, Tehran, Iran.
  2. University of Leeds, Leeds, UK ; Research Center of Biomedical Technologies and Robotics (RCBTR), Tehran University of Medical Sciences, Tehran, Iran.
  3. Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  4. Department of Radiology, Mostafa Khomeini Hospital, Shahed University, Tehran, Iran.
  5. University of Leeds, Leeds, UK.
  6. Sports Medicine Federation, Tehran, Iran.
  7. Department of Biostatistics and Computer, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  8. Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

PMID: 26557277 PMCID: PMC4632562 DOI: 10.5812/iranjradiol.17832v2

Abstract

BACKGROUND: Despite several studies with different methods, the effect of functional knee braces on knee joint kinematics is not clear. Direct visualization of joint components through medical imaging modalities may provide the clinicians with more useful information.

OBJECTIVES: In this study, for the first time in the literature, video fluoroscopy was used to investigate the effect of knee bracing on the sagittal plane kinematics of anterior cruciate ligament (ACL) injured patients.

PATIENTS AND METHODS: For twelve male unilateral ACL deficient subjects, the anterior tibial translation was measured during lunge exercise in non-braced and braced conditions. Fluoroscopic images were acquired from the subjects using a digital fluoroscopy system with a rate of 10 fps. The image of each frame was scaled using a calibration coin and analyzed in AutoCAD environment. The angle between the two lines, tangent to the posterior cortexes of the femoral and tibial shafts was measured as the flexion angle. For the fluoroscopic images associated with 0°, 15°, 30°, 45° and 60° knee flexion angles, the relative anterior-posterior configuration of the tibiofemoral joint was assessed by measuring the position of landmarks on the tibia and femur.

RESULTS: Results indicated that the overall anterior translations of the tibia during the eccentric (down) and concentric (up) phases of lunge exercise were 10.4 ± 1.7 mm and 9.0 ± 2.2 mm for non-braced, and 10.1 ± 3.4 mm and 7.4 ± 2.5 mm, for braced conditions, respectively. The difference of the tibial anterior-posterior translation behaviors of the braced and non-braced knees was not statistically significant.

CONCLUSION: Fluoroscopic imaging provides an effective tool to measure the dynamic behavior of the knee joint in the sagittal plane and within the limitations of this study, the pure mechanical stabilizing effect of functional knee bracing is not sufficient to control the anterior tibial translation of the ACL deficient patients during lunge exercise.

Keywords: Anterior Cruciate Ligament; Brace; Fluoroscopy; Kinematics; Knee Joint

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