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Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_11 | Pages 60 - 60
1 Jul 2014
James R Hogan M Balian G Chhabra A Laurencin C
Full Access

Summary Statement

A resorbable and biocompatible polymer-based scaffold was used for the proliferation and delivery of adipose derived stromal cells, as well as delivery of a cell growth/differentiation promoting factor for improved tendon defect regeneration.

Introduction

Surgeons perform thousands of direct tendon repairs annually. Repaired tendons fail to return to normal function following injury, and thus require continued efforts to improve patient outcomes. The ability to produce regenerate tendon tissue with properties equal to pre-injured tendon could lead to improved treatment outcomes. The aim of this study was to investigate in vivo tendon regeneration using a biodegradable polymer for the delivery of adipose derived stromal cells (ADSCs) and a polypeptide, growth/differentiation factor-5/(GDF-5), in a tendon gap model.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_VIII | Pages 59 - 59
1 Mar 2012
Cui F Wang X Dighe A Balian G Cui Q
Full Access

Introduction

Enhanced angiogenesis and osteogenesis may provide new strategies for the treatment of osteonecrosis.

Methods

Synergistic effects of vascular endothelial growth factor (VEGF) and bone morphogenetic protein - 6 (BMP-6) on in vitro osteogenic differentiation and in vivo ectopic bone formation mediated by a cloned mouse bone marrow stromal cell line, D1, previously isolated from Balb/c mice in our laboratory, were determined.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_VIII | Pages 56 - 56
1 Mar 2012
Zawodny SR Wang X Balian G Cui Q
Full Access

Introduction

Osteonecrosis of the femoral head is a devastating disease in young patients and remains a challenge for clinicians and researchers alike. To increase understanding of the disease and produce effective treatments that preserve a patient's native hip, an animal model that mimics the disease process in humans, including collapse of the femoral head, is essential. Our goal was to create such a bipedal model by surgically inducing osteonecrosis in the femoral heads of chickens.

Methods

A lateral approach to the proximal femur was used to access the hip, dislocate the femoral head, and sever the periosteal network of blood vessels. At 4, 8, 12, and 20 weeks after surgery, both the left (experimental) and right (control) femoral heads were harvested from 6 chickens for micro-CT and histological analysis.