MR Imaging of Traumatic and Overuse Injuries of the Wrist and Hand in Athletes

Lisle, David A; Shepherd, Gary J.; Cowderoy, Gregory A.; O'Connell, Paul T.

doi:10.1016/j.mric.2009.06.007

Cited by 24 publications

(9 citation statements)

References 60 publications

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“…Hamate fractures are uncommon, accounting for 1.7% of all carpal fractures, but are usually nondisplaced and difficult to diagnose radiographically. Most hamate fractures involve the hook of the hamate and typically result from baseball impaction, direct impact of the handle of a racket during racket sports (29), or by striking the ground with a golf club (30). Fractures of the body of the hamate are much more uncommon and may be caused by an axial force transmitted through the metacarpals or by a direct blow to the ulnar side of the wrist (29).…”

Section: Osseous Abnormalitiesmentioning

confidence: 99%

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Differential regulation of axonal growth and neuromuscular junction assembly by HGF/c‐Met signaling

Madhavan

Peng

2012

Developmental Dynamics

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Background: During vertebrate neuromuscular junction (NMJ) development, contact between motor axons and muscle fibers is followed by pre-and post-synaptic specialization. Using Xenopus nerve-muscle cocultures, we recently showed that spinal neurons initially contacted muscle cells by means of filopodial processes, and that muscle-derived basic fibroblast growth factor induced axonal filopodia and slowed axonal advance to promote nerve-muscle interaction and NMJ establishment. In contrast, neurotrophins enhanced axonal growth but suppressed the extension of axonal filopodia and blocked NMJ formation. Results: Here we report that hepatocyte growth factor (HGF), which also supports motor neuron survival, was expressed by Xenopus muscle cells, and that forced expression of HGF in Xenopus spinal neurons inhibited the extension of axonal filopodia. Overexpression of the HGF-receptor c-Met in neurons also blocked the formation of axonal filopodia and furthermore sped up axonal growth, but a kinase-dead form of c-Met was unable to effect these changes. Importantly, treatment of nerve-muscle cocultures with recombinant HGF or the expression of HGF or active c-Met in neurons, or that of excess HGF in muscle, inhibited nerve-induced AChR clustering in muscle. Conclusions: Our results suggest that HGF/c-Met signaling in neurons promotes axonal growth but suppresses filopodial assembly in neurons and hinders NMJ establishment. Developmental Dynamics 241:1562-1574,

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Section: Osseous Abnormalitiesmentioning

confidence: 99%

“…MRI of a stress reaction manifests as a bone marrow edema pattern with adjacent periosteal and soft tissue edema. If untreated, a stress reaction may progress to a stress fracture, which manifests as a low signal fracture line or cortical breach (30).…”

Section: Osseous Abnormalitiesmentioning

confidence: 99%

Differential regulation of axonal growth and neuromuscular junction assembly by HGF/c‐Met signaling

Madhavan

Peng

2012

Developmental Dynamics

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“…However, we believe that the predisposition for structural abnormalities in this region likely results from the abrupt change in tendon stresses experienced by the ECU tendon as it transitions out of the osseous groove and courses toward the fifth metacarpal [5,17,21‐23]. The loss of bony support likely creates a “stress riser” within the tendon, accentuated by the angulation of the ECU tendon experienced by tennis participation, as described previously [5,6,13,19,20]. Second, there was no overall effect of hand dominance on structural ECU abnormalities, with the exception that full‐thickness tears were twice as common in the dominant wrist compared with the nondominant wrist (Table 3).…”

Section: Discussionmentioning

confidence: 92%

Sonographic Evaluation of the Extensor Carpi Ulnaris in Asymptomatic Tennis Players

Sole

Wisniewski

Newcomer

et al. 2014

PM&R

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Sonographic evidence of ECU tendinosis, partial-thickness tearing, full-thickness tearing, and subluxation can be seen in long-term, asymptomatic, recreational tennis players, whereas tendon sheath effusions, tenosynovitis, and tendon dislocation are uncommon. Further research is warranted to determine the clinical significance of asymptomatic ECU tendon abnormalities among long-term tennis players at multiple skill levels.

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“…Injuries to the extensor hood can occur from a direct blow and sudden forced flexion of the MCP. 19 Valgus or varus forces across the MCP can also cause injury to the extensor hood. Spontaneous rupture of a sagittal band can occur.…”

Section: Mechanism Of Injurymentioning

confidence: 99%

“…Dynamic US can be used to depict subluxation/dislocation of the extensor tendon while the patient flexes the MCP joint. 19…”

Section: Imagingmentioning

confidence: 99%

The Athlete's Hand: Ligament and Tendon Injury

Scalcione

Pathria

Chung

2012

Semin Musculoskelet Radiol

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Hand injuries are common, accounting for up to 20% of emergency department visits nationwide. An understanding of the complex and detailed anatomical relationships of small joints facilitates the accurate diagnosis of many common sports-related injuries of the hand. We review the common ligamentous and tendinous injuries of the hand including collateral ligament injuries, gamekeeper's thumb, extensor mechanism injuries, pulley injuries, boutonniere deformities, and mallet and jersey lesions. The mechanism of injury, clinical presentation and treatment, pertinent anatomy, and imaging findings are discussed.

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MR Imaging of Traumatic and Overuse Injuries of the Wrist and Hand in Athletes

Cited by 24 publications

References 60 publications

Differential regulation of axonal growth and neuromuscular junction assembly by HGF/c‐Met signaling

Differential regulation of axonal growth and neuromuscular junction assembly by HGF/c‐Met signaling

Sonographic Evaluation of the Extensor Carpi Ulnaris in Asymptomatic Tennis Players

The Athlete's Hand: Ligament and Tendon Injury

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