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J Clin Med. 2020 Feb 06;9(2). doi: 10.3390/jcm9020451.

Effects of Immobilization and Re-Mobilization on Knee Joint Arthrokinematic Motion Quality.

Journal of clinical medicine

Dawid Bączkowicz, Grzegorz Skiba, Krzysztof Falkowski, Przemysław Domaszewski, Noelle Selkow

Affiliations

  1. Faculty of Physical Education and Physiotherapy, Opole University of Technology, 45-007 Opole, Poland.
  2. Opole Rehabilitation Center, 48-317 Korfantów, Poland.
  3. Department of Orthopaedics, University Clinical Hospital in Opole, 45-401 Opole, Poland.
  4. School of Kinesiology and Recreation, Illinois State University, Normal, IL 5120, USA.

PMID: 32041248 PMCID: PMC7074294 DOI: 10.3390/jcm9020451

Abstract

BACKGROUND: Knee immobilization is a common intervention for patients with traumatic injuries. However, it usually leads to biomechanical/morphological disturbances of articular tissues. These changes may contribute to declining kinetic friction-related quality of arthrokinematics; however, this phenomenon has not been analyzed in vivo and remains unrecognized. Thus, the aim of the present study is to investigate the effect of immobilization and subsequent re-mobilization on the quality of arthrokinematics within the patellofemoral joint, analyzed by vibroarthrography (VAG).

METHODS: Thirty-four patients after 6-weeks of knee immobilization and 37 controls were analyzed. The (VAG) signals were collected during knee flexion/extension using an accelerometer. Patients were tested on the first and last day of the 2-week rehabilitation program.

RESULTS: Immobilized knees were characterized by significantly higher values of all VAG parameters when compared to controls (

CONCLUSION: Immobilization-related changes within the knee cause impairments of arthrokinematic function reflected in VAG signal patterns. The alterations in joint motion after 6 weeks of immobilization may be partially reversible; however, the 2-week physiotherapy program is not sufficient for full recovery.

Keywords: arthrokinematics; cartilage; crepitus; immobilization; re-mobilization; synovial joint

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