[Latest standards of muscle injury prophylactic activities, treatment and rehabilitation].

Muscle injury represents the highest proportion of sport-linked contusions. Experimental and clinical studies aim at increasingly detailed recognition of muscle physiology and pathophysiology. It would allow to set up functional standards and permit to minimize risk of contusions associated with sport activities.

[Influence of age and duration of neuropathy on effect of the surgical treatment of upper extremity compressive neuropathies].

Carpal tunnel syndrome and cubital tunnel syndrome are the most common compressive neuropathies of the upper extremity. Many surgical techniques of its treatment have been elaborated. Even though all of techniques turned out to be equally effective, minimal invasive methods are now very willingly applied.

Scaffold-aided repair of articular cartilage studied by MRI.

Objective: The objective of the study was to evaluate the ability of the noninvasive magnetic resonance techniques to monitor the scaffold-aided process of articular cartilage repair.

Materials And Methods: Defects of 4 mm in diameter and 3 mm in depth were created in right knees of 30 adolescent white New Zealand rabbits. Fourteen rabbits were implanted with poly(lactide-co-glycolic acid) (PLGA) scaffold trimmed to match the size and the shape of the defect (PLGA+ group).

[Application of microscopic MR for evaluation of cartilage repair].

Magnetic resonance imaging is gold standard for noninvasive evaluation of articular cartilage damage and has been also used for monitoring cartilage repair. The aim of this study was to find correlation between histological microscopy and microscopic MR in evaluation of the repair of osteochondral defects in articular cartilage. Study was based animal model (rabbit).

[Value of collagen scaffolds in surgical reconstruction of articular cartilage].

Articular cartilage has a very limited capacity for regeneration and the untreated injuries of this tissue may lead to osteoarthritis. The aim of this study was to evaluate the application of collagen scaffolds in surgical reconstruction of articular cartilage. A group of 28 rabbits was used in the study.

[Value of autologous chondrocyte transplantation in experimental cartilage defects reconstruction. Part IV--Microscopic analysis of repair tissue degenerative changes (cellularity and signs of necrosis)].

Unlabelled: Articular cartilage cells are immersed in semi-solid matrix and isolated from the rest of the body because of lack of nervous fibres, and blood and lymphatic vessels. Trauma and aging processes result in cartilage ultrastructure disorders. Those changes leads to progressive decreasing of durability and rigidity of cartilage.

[Value of osteo-chondral paste autologous transplantation in experimental cartilage defects reconstruction. Part IV--Microscopic analysis of cellularity and of traits of necrosis in the defect-filling tissue].

Introduction: Restricted potential of cartilage to regeneration following trauma induced search for new techniques of articular cartilage repair. Present study aimed at defining in experimental conditions of autologous osteochondral paste value by evaluation of cellularity and presence of necrosis in the defect-filling tissue.

Material And Methods: Full thickness defect (IV(o)--ICRS scale) on distal rabbit femur joint surface was made.

[Value of autologous chondrocyte transplantation in experimental cartilage defects reconstruction. Part III--Microscopic analysis of reconstructed cartilage thickness and integration with surrounding tissue].

Unlabelled: Lack of cartilage vascularization is the reason of its low regenerative potential. The aim of this part of the study was microscopic evaluation of repair tissue thickness and its integration with surrounding cartilage, after autologous chondrocyte transplantation.

Material And Methods: Repair of partial thickness cartilage defect (ICRS III(o) grade) on distal femur joint surface was evaluated (25 adolescent rabbits).

[Value of osteo-chondral paste autologous transplantation in experimental cartilage defects reconstruction. Part III--Microscopic analysis of reconstructed cartilage thickness and surface regularity].

Introduction: A limited ability of the cartilage to heal after trauma was the reason to start research on new methods concerning better cartilage reconstruction. The aim of the study was evaluation of repair tissue thickness and surface regularity after osteochondral paste transplantation.

Material And Methods: Full thickness defect (IV(o)--ICRS scale) on distal rabbit femur joint surface was made.

[Value of autologous chondrocyte transplantation in experimental cartilage defects reconstruction. Part II: Microscopic analysis of reconstructed cartilage structural integrity and surface regularity].

Unlabelled: Experimental and clinical tests proved that cultured, autologous chondrocytes retain their properties and have ability to reconstruct hyaline-like cartilage, which represents chemical composition and biomechanical characteristics similar to normal hyaline cartilage. The aim of this part of the study was microscopic evaluation of repair tissue structural integrity and surface regularity after autologous chondrocyte transplantation.

Material And Methods: Repair of partial thickness cartilage defect (ICRS III(o) grade) on distal femur joint surface was evaluated (25 adolescent rabbits).

[Value of autologous transplantation of osteo-chondral paste in reconstruction of experimental cartilage defects. Part II. Microscopic analysis of integration with surrounding cartilage, structural integrity and subchondral bone reconstruction in repair tissue].

Introduction: A limited ability of the cartilage to heal after trauma was the reason to start research on new methods concerning better cartilage reconstruction. The aim of the study was evaluation of repair tissue integration with surrounding cartilage, its structural integrity and subchondral bone reconstruction after osteo-chondral paste transplantation.

Material And Methods: Full thickness defect (IV degree--ICRS scale) on distal rabbit femur joint surface was made.

[Value of autologous chondrocyte transplantation in the reconstruction of experimental cartilage defects. Part I. Extent of defect, macroscopic appearance of reconstructed articular surface and microscopic analysis of predominant tissue].

Articular cartilage defect is one of the main reasons of osteoarthritis. Currently, tissue engineering techniques are the methods concerning better cartilage reconstruction. The aim of this part of the study was macroscopic evaluation of degree of defect feeling, macroscopic appearance of repair tissue and microscopic analysis of predominant tissue after autologous chondrocytes transplantation.

[The value of autologous osteochondral paste for in-vitro treatment of damage to articular cartilage. Part I. Macroscopic and microscopic assessment of the regenerated articular surface].

The limited ability of articular cartilage to regenerate after trauma has been the main reason for research of new repair techniques. The aim of this paper was to assess in in-vitro conditions the value of autologous osteochondral of pulp--macroscopic analysis of the regenerated articular surface and microscopic assessment of the dominant tissue in the regenerate. The experimental model consisted of a full-depth cartilage defect of the articular surface of the distal femur in rabbits.

[Graft remodeling following Hertel ACL reconstruction in MR imaging].

MRI and clinical assessment of 21 patients operated on with Hertel method due to knee instability has been presented. Position of the graft in reference to the Blumensaat line has been evaluated in MRI with the use of 3 point scale after mean follow-up of 9-months. Four points scale has been used to grade signal intensity as indicator of graft remodeling.