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Fibrous Layer of Articular Capsule of Distal Radioulnar Joint
Connective Tissue

Fibrous Layer of Articular Capsule of Distal Radioulnar Joint

Stratum fibrosum capsulae articularis articulationis radioulnararis

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Anatomical Relations

The fibrous layer of the articular capsule of the distal radioulnar joint forms the external layer of the articular capsule of the distal radioulnar joint. The synovial membrane forms the internal layer of the capsule. The fibrous membrane is more lax proximally.

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Structure

The fibrous layer of the articular capsule of the distal radioulnar joint is composed of dense fibrous tissue and is thinker anteriorly and posteriorly.

Function

The articular capsule of the distal radioulnar joint ensures that the joint is sealed, thus, keeping the lubricating synovial fluid within the joint. It provides passive stability to the joint by limiting the joint movement. Additionally, it provides active stability but containing numerous proprioceptive nerve endings which relay mechanical information back to the central nervous system (Ralphs and Benjamin, 1994).

References

Ralphs, J. R. and Benjamin, M. (1994) 'The joint capsule: structure, composition, ageing and disease', Journal of Anatomy, 184(Pt 3), pp. 503-509.

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Radioulnar Joint

ScienceDirect image

The distal radioulnar joint recess is then centered within the ultrasound image, and the needle is placed through the skin approximately 0.5 cm below the center of the distal aspect of the ultrasound transducer and advanced using an out-of-plane approach, with the needle trajectory adjusted under real-time ultrasound guidance, to enter the distal radioulnar recess.

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