2016年10月13日 · PIN compression Syndrome . in PIN palsy, the last muscle to recover is the extensor indicis proprius ; Dorsal Approach to Radius (Thompson)

2023年12月18日 · PIN compression syndrome is a compressive neuropathy of the PIN which affects the nerve supply of the forearm extensor compartment. Diagnosis is made clinically with weakness of thumb and wrist extensors without sensory deficits.

The posterior interosseous nerve (PIN) passes between the superficial (Ss) and deep (Sd) heads of the supinator muscle before exiting into the posterior compartment. The radial nerve is formed from the posterior cord of the brachial plexus, with contributions from C6, C7, C8, and T1.

2023年8月6日 · Posterior interosseous nerve syndrome is a nerve compression neuropathy of the posterior interosseous branch of the radial nerve, which affects the innervation of the forearm extensor compartment.

Posterior interosseous nerve syndrome is a neuropathic compression of the posterior interosseous nerve where it passes through the radial tunnel. [1] . This may result in paresis or paralysis of the digital and thumb extensor muscles, resulting in an inability to extend the thumb and fingers at their metacarpophalangeal joints. [2] .

2023年5月1日 · There are multiple compression neuropathies of the upper extremity. Some neuropathies, like carpal tunnel, are quite common; others like posterior interosseous nerve (PIN) syndrome are not. Knowledge of the anatomy and function of each nerve is essential to diagnose which nerve and compression site is involved correctly.

Denervation atrophy of a muscle was defined as diffuse hyperechoic or mixed hyperechoic and hypoechoic changes of a muscle originally innervated by the PIN. Perineural fat loss was defined as nonvisualization of the thin hyperechoic layer circumferentially surrounding the PIN.

Posterior interosseous nerve (PINs) syndrome is characterized by the entrapment deep branch of the radial nerve in the supinator muscle region. The clinical findings of PINs include paralysis of finger extension and limitation of extension of the wrist [1].

2024年3月24日 · Posterior Interosseous Nerve (PIN) Palsy is a syndrome characterised by a reduction in extensor movements of the fingers. It most commonly due to a compression at the radial tunnel. This article explores the causes, signs …

- full pronation of forearm produces pressure on PIN by sharp tendinous edge of the origin of ECRB muscle; - PIN may be compressed by the tendinous origin of the ECRB; - active supination from a pronated position (tightening supinator) along w/ …