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Unicameral Bone Cyst

Basics

Description A benign membrane-lined, fluid-filled lesion of bone that develops in childhood and fills in by maturity Location: 80% occur in the proximal humerus and proximal femur. Other, less common, areas are the proximal tibia, distal tibia, distal femur, calcaneus, distal humerus, radius, fibula, ilium, ulna, and rib. Usually centrally located adjacent to the […]

Triangular Fibrocartilage Complex Tear

Basics

Description The TFCC: A group of ligaments and cartilaginous structures that stabilize the distal radioulnar joint during pronation and supination of the forearm Extends from the ulnar styloid to the sigmoid notch of the distal radius Central portion: More cartilaginous than its periphery Acts as a meniscal homolog, similar to the menisci of the […]

Acromioclavicular Joint Separation

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Basics Description AC joint injuries range from a mild sprain of the supporting ligaments to a complete separation of the AC joint. The AC joint is a diarthrodial joint formed by the distal clavicle and the medial facet of the acromion. Interposed in the joint is a fibrocartilaginous disc, which helps distribute the […]

A Patient’s Guide to Claw Toes and Hammertoes

Introduction

Claw toe and hammertoe conditions are fairly common in cultures that wear shoes. In most cases, these problems can be traced directly to ill-fitting shoes.

This guide will help you understand

how claw toe and hammertoe conditions develop how the conditions cause problems what treatment options are available

Anatomy

What part of the toe […]

A Patient’s Guide to Biceps Tendonitis

Introduction

Biceps tendonitis, also called bicipital tendonitis, is inflammation in the main tendon that attaches the top of the biceps muscle to the shoulder. The most common cause is overuse from certain types of work or sports activities. Biceps tendonitis may develop gradually from the effects of wear and tear, or it can happen suddenly […]