Saratov JOURNAL of Medical and Scientific Research

biomechanical parameters

Comprehensive approach to the assessment of the functional status of patients with degenerative joint diseases of the lower extremities

Year: 2017, volume 13 Issue: №3 Pages: 510-514
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Romakina N.A., Korshunova G.A., Kireev S.I., Sertakova A.V., Norkin I.A.
Organization: Scientific Research Institute of Traumatology Orthopedics and Neurosurgery of Saratov State Medical University n.a. V.I. Razumovsky
Summary:

Aim: development of an integrated biomechanical index that reflects the state of kinematic and static function in patients who need replacement of large joints as well as evaluation of the myoneural complex of lower extremities activity of category of patients. Material and Methods. 103 patients with osteoarthrosis of the hip and knee joints. A biomechanical survey included podography, stabilometry and dynamometry. An electrophysiological study of the peripheral nerves of the lower extremities with the determination of the amplitude of the muscle response and late neuronal responses was carried out. The level of activity of the gluteal muscles was determined. Results. The most sensitive indicators reflecting the state of biomechanical status were identified, specialized software for the integral biomechanical index calculation was developed. Conclusion. Methods of clinical biomechanics allow specialists to assess the state of kinematic and static function of the musculoskeletal system, matching of the integral biomechanical index with the data of neurophysiological monitoring makes possible to select individual tactics of treatment.

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The use of clinical analysis of movements in evaluation of motor functional status of patients after total hip replacement

Year: 2016, volume 12 Issue: №2 Pages: 185-190
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Romakina N.A., Kireev S.I., Reshetnikov A.N., Frolenkov A.V., Norkin I.A.
Organization: Saratov State Medical University
Summary:

Aim: to estimate functional status of coxarthrosis in patients requiring total hip replacement of the two hip joints. Material and methods. The biomechanical examination of 94 patients with bilateral primary coxarthrosis before and after total hip replacement was performed using clinical stabilometric software complex. The ability to perceive the mechanical load during standing and walking was evaluated at different stages of the treatment. The difference between the samples was estimated with the use of Mann — Whitney U-test. The rank correlation of biomechanical parameters was measured by Spearman coefficient. Results. It was revealed that the most responsive indicators are the transfer period, the first and second periods of double support and the deviation of the center of pressure relative to the average position in the frontal plane. Conclusion. After surgical treatment there was observed some improvement: the-left-and-right-step asymmetry decrease, rhythm rate increase, improved ability to maintain body balance, jog reactions increase.

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