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Daily Archives for: May 27th, 2009

Introduction: The application of an autologous plasma rich in growth factors is beneficial in restoring connective tissues, as shown by clinical evidence in oral surgery and more recently in arthroscopic anterior cruciate ligament reconstruction and two cases of ruptured Achilles tendon in professional athletes. This is attributed to the slow delivery of growth factors from harvested platelets that have been activated by endogenous thrombin promoted by the addition of calcium chloride.

Objective Platelet-rich plasma (PRP) is a fraction of plasma that contains high levels of multiple growth factors. The purpose of this study was to examine the effects of PRP on cell proliferation and matrix synthesis by porcine chondrocytes cultured in alginate beads, conditions that promote the retention of the chondrocytic phenotype, in order to determine the plausibility of using this plasma-derived material for engineering cartilage.

Methods: Twelve athletes underwent open suture repair after complete Achilles tendon tear. Open suture repair in conjunction with a preparation rich in growth factors (PRGF) was performed in 6 athletes and retrospectively compared with a matched group that followed conventional surgical procedure. The outcomes were evaluated on the basis of range of motion,

The objective of the study was to test the hypothesis that platelet-rich plasma (PRP) enhances meniscal tissue regeneration in vitro and in vivo. In the in vitro study, monolayer meniscal cell cultures were prepared, and 3-(4,5-dimethylthiazol-2yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium inner salt assay and 5-bromo-2′-deoxyuridine assay were performed to assess proliferative behavior in the presence of PRP. Alcian blue assay was performed to assess extracellular matrix (ECM) synthesis.

The anterior cruciate ligament (ACL) of the knee fails to heal after primary repair. Here we hypothesize that a beneficial biologic repair response can be induced by placing a collagen-platelet rich plasma (collagen-PRP) material into a central ACL defect. A collagen-PRP scaffold was used to treat a central ACL defect in vivo. In the first experiment,

Objective: To appraise existing evidence for prolo , polidocanol, autologous whole blood and platelet-rich plasma injection therapies for lateral epicondylosis (LE).

Design: Systematic Review.

Data sources
: Medline, Embase, CINAHL, Cochrane Central Register of Controlled Trials, Allied and Complementary Medicine. Search strategy: names and descriptors of the therapies and LE.

Historical Perspective: Arthroscopic results of meniscal tears is one of the most common procedures performed by orthopaedic surgeons worldwide. The advent of newer technologies (suture materials, fixation devices, and biologic substances) has increased the potential for clinical success when attempting to repair the torn meniscus.

Indications and Contraindications:

The incidence of Achilles tendon ruptures is rising among active individuals regardless of age. Although operative reconstruction is a standard approach to rupture care, it is accompanied by a non-trivial risk of complications.11 Overall, open repair is specially indicated for active people since it re-establishes fiber continuity, reducing re-rupture risk and improving long-term functional outcome.16 When post-surgical complications arise,

The role of platelet-rich plasma (PRP) as a promoter of bone healing remains controversial. The hypothesis investigated was that PRP improves bone healing of a critical-size diaphyseal radius defect in a rabbit model. The bone defect was filled with a high-surface ceramic scaffold, calcium-deficient hydroxyapatite (CDHA), with the addition of allogenic PRP, mesenchymal stem cells (MSC) or both.