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Bone & Joint Research
Vol. 11, Issue 1 | Pages 40 - 48
27 Jan 2022
Liao W Sun J Wang Y He Y Su K Lu Y Liao G Sun Y

Aims

In the repair of condylar cartilage injury, synovium-derived mesenchymal stem cells (SMSCs) migrate to an injured site and differentiate into cartilage. This study aimed to confirm that histone deacetylase (HDAC) inhibitors, which alleviate arthritis, can improve chondrogenesis inhibited by IL-1β, and to explore its mechanism.

Methods

SMSCs were isolated from synovium specimens of patients undergoing temporomandibular joint (TMJ) surgery. Chondrogenic differentiation potential of SMSCs was evaluated in vitro in the control, IL-1β stimulation, and IL-1β stimulation with HDAC inhibitors groups. The effect of HDAC inhibitors on the synovium and condylar cartilage in a rat TMJ arthritis model was evaluated.


Bone & Joint Research
Vol. 8, Issue 10 | Pages 502 - 508
1 Oct 2019
Mao W Ni H Li L He Y Chen X Tang H Dong Y

Objectives

Different criteria for assessing the reduction quality of trochanteric fractures have been reported. The Baumgaertner reduction quality criteria (BRQC) are relatively common and the Chang reduction quality criteria (CRQC) are relatively new. The objectives of the current study were to compare the reliability of the BRQC and CRQC in predicting mechanical complications and to investigate the clinical implications of the CRQC.

Methods

A total of 168 patients were assessed in a retrospective observational study. Clinical information including age, sex, fracture side, American Society of Anesthesiologists (ASA) classification, tip-apex distance (TAD), fracture classification, reduction quality, blade position, BRQC, CRQC, bone quality, and the occurrence of mechanical complications were used in the statistical analysis.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_11 | Pages 212 - 212
1 Jul 2014
Suen P He Y Chow D Huang L Li C Ke H Qin L
Full Access

Summary Statement

This study demonstrated that Sclerostin monoclonal antibody (Scl-Ab) enhanced bone healing in the rat osteotomy model. Scl-Ab increased callus size, callus bone volume fraction, rate of callus bone formation and fracture callus strength.

Introduction

Sclerostin is a protein secreted by osteocytes and is characterized as a key inhibitor of osteoblast-mediated bone formation. Previous studies demonstrated that treatment with a sclerostin monoclonal antibody (Scl-Ab) results in significantly increased bone formation, bone mass and strength in rat closed fracture model (1–2). However, the effects of Scl-Ab on healing of open fracture model have not yet been reported in rats. Previously in ORS and ASBMR Annual Meeting, we have reported that Scl-Ab promoted the open fracture healing at week 3 and week 6 post-fracture. Here we extended our investigation for up to week 9 with additional histological assessments and dynamic histomorphometric analysis to investigate the effects of systemic administration of Scl-Ab on a later phase of fracture repair.