Pathogenesis of Shoulder Calcific Tendinopathy

Area of Science:

• Orthopedics
• Biochemistry
• Pathology

Background:

• Shoulder calcific tendinopathy is a prevalent condition characterized by hydroxyapatite crystal deposition within rotator cuff tendons.
• It affects adults, particularly women, and involves tenocyte transformation into chondrocyte-like cells due to metabolic, inflammatory, and mechanical factors.

Purpose of the Study:

• To review the multifactorial pathogenetic mechanisms of shoulder calcific tendinopathy.
• To highlight emerging therapeutic strategies for shoulder calcification.

Main Methods:

• Literature review of recent studies on shoulder calcific tendinopathy pathogenesis.
• Analysis of risk factors, including hyperlipidemia, diabetes, and thyroid dysfunction.
• Exploration of the role of metalloproteinases, oxidative stress, BMPs, and genetic alterations.

Main Results:

• Pathogenesis involves metabolic and inflammatory changes, mechanical stress, and tenocyte-to-chondrocyte transformation.
• Key contributing factors include hyperlipidemia, advanced age, diabetes, female gender, and thyroid dysfunction.
• Metalloproteinases, oxidative stress, inflammatory mediators, BMPs, and genetic factors are significant contributors.

Conclusions:

• Understanding the complex pathogenesis is crucial for developing effective treatments.
• New therapies modulating inflammation, osteogenic differentiation, and calcium homeostasis show promise, particularly in preclinical settings.