Emmanuel Ogalo, Lee Bauer, Christopher Doherty, Sean G Bristol, Kristine M Chapman, Bc Neuromuscular Disease Group, Emily Krauss, Michael J Berger
{"title":"肘部尺神经病变中尺神经支配肌肉的超声评价。","authors":"Emmanuel Ogalo, Lee Bauer, Christopher Doherty, Sean G Bristol, Kristine M Chapman, Bc Neuromuscular Disease Group, Emily Krauss, Michael J Berger","doi":"10.1002/pmrj.70020","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Quantitative muscle ultrasound (qMUS) provides morphological measurements that can support clinical observation of muscle atrophy and weakness. As the use of qMUS continues to expand, and its potential for broader implementation in neuromuscular evaluation grows, there is a clear need for further validation, particularly in pathologies frequently encountered in electrodiagnostic laboratories, such as cubital tunnel syndrome caused by ulnar neuropathy at the elbow (UNE).</p><p><strong>Objective: </strong>To evaluate the validity of qMUS evaluation of ulnar-innervated intrinsic hand muscles.</p><p><strong>Design: </strong>Cross-sectional study.</p><p><strong>Participants: </strong>Individuals 18 years or older with chronic UNE and healthy controls (HC).</p><p><strong>Main outcome measurement: </strong>qMUS parameters (muscle thickness [MT], cross-sectional area [CSA], echogenicity) were measured in the first dorsal interosseous (FDI) and abductor digiti minimi (ADM) and were correlated to corresponding negative peak amplitude of the compound muscle action potential measured (CMAP) and key pinch grip strength.</p><p><strong>Results: </strong>Sixteen adults (8 HC, 8 UNE) participated in the study. Key pinch strength was significantly correlated with FDI MT (r = 0.45, p = .03 [95% CI, 0.05-0.73]) and echogenicity (rho = -0.60, p = .002 [95% CI, -0.82 to -0.24]). FDI MT and echogenicity explained 20% and 36% of pinch strength variance, respectively. Echogenicity was significantly correlated with corresponding CMAP amplitudes (FDI: rho = -0.59, p = .004 [95% CI, -0.81 to -0.21]; ADM: rho = -0.62, p = .002 [95% CI, -0.83 to -0.26]). No statistically significant relationship was found between key pinch strength and FDI CSA (r = 0.35 p = .104 [95% CI, -0.08-0.67]). Furthermore, FDI CMAP was not significantly associated with FDI MT (rho = 0.14, p = .55 [95% CI, -0.32-0.54]) or FDI CSA (rho = 0.041, p = .86 [95% CI, 0.04-0.47]).</p><p><strong>Conclusion: </strong>qMUS measures of echogenicity and MT (indicators of muscle fibrosis and size, respectively), correlated with key pinch strength and CMAP amplitudes in the FDI and ADM, in a heterogenous group including UNE and HC limbs. qMUS parameters may provide useful complementary markers and deeper insight into neuromuscular health in entrapment neuropathy.</p>","PeriodicalId":20354,"journal":{"name":"PM&R","volume":" ","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ultrasonographic evaluation of ulnar innervated muscles in ulnar neuropathy at the elbow.\",\"authors\":\"Emmanuel Ogalo, Lee Bauer, Christopher Doherty, Sean G Bristol, Kristine M Chapman, Bc Neuromuscular Disease Group, Emily Krauss, Michael J Berger\",\"doi\":\"10.1002/pmrj.70020\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Quantitative muscle ultrasound (qMUS) provides morphological measurements that can support clinical observation of muscle atrophy and weakness. As the use of qMUS continues to expand, and its potential for broader implementation in neuromuscular evaluation grows, there is a clear need for further validation, particularly in pathologies frequently encountered in electrodiagnostic laboratories, such as cubital tunnel syndrome caused by ulnar neuropathy at the elbow (UNE).</p><p><strong>Objective: </strong>To evaluate the validity of qMUS evaluation of ulnar-innervated intrinsic hand muscles.</p><p><strong>Design: </strong>Cross-sectional study.</p><p><strong>Participants: </strong>Individuals 18 years or older with chronic UNE and healthy controls (HC).</p><p><strong>Main outcome measurement: </strong>qMUS parameters (muscle thickness [MT], cross-sectional area [CSA], echogenicity) were measured in the first dorsal interosseous (FDI) and abductor digiti minimi (ADM) and were correlated to corresponding negative peak amplitude of the compound muscle action potential measured (CMAP) and key pinch grip strength.</p><p><strong>Results: </strong>Sixteen adults (8 HC, 8 UNE) participated in the study. Key pinch strength was significantly correlated with FDI MT (r = 0.45, p = .03 [95% CI, 0.05-0.73]) and echogenicity (rho = -0.60, p = .002 [95% CI, -0.82 to -0.24]). FDI MT and echogenicity explained 20% and 36% of pinch strength variance, respectively. Echogenicity was significantly correlated with corresponding CMAP amplitudes (FDI: rho = -0.59, p = .004 [95% CI, -0.81 to -0.21]; ADM: rho = -0.62, p = .002 [95% CI, -0.83 to -0.26]). No statistically significant relationship was found between key pinch strength and FDI CSA (r = 0.35 p = .104 [95% CI, -0.08-0.67]). Furthermore, FDI CMAP was not significantly associated with FDI MT (rho = 0.14, p = .55 [95% CI, -0.32-0.54]) or FDI CSA (rho = 0.041, p = .86 [95% CI, 0.04-0.47]).</p><p><strong>Conclusion: </strong>qMUS measures of echogenicity and MT (indicators of muscle fibrosis and size, respectively), correlated with key pinch strength and CMAP amplitudes in the FDI and ADM, in a heterogenous group including UNE and HC limbs. qMUS parameters may provide useful complementary markers and deeper insight into neuromuscular health in entrapment neuropathy.</p>\",\"PeriodicalId\":20354,\"journal\":{\"name\":\"PM&R\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"PM&R\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1002/pmrj.70020\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"REHABILITATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"PM&R","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1002/pmrj.70020","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"REHABILITATION","Score":null,"Total":0}
Ultrasonographic evaluation of ulnar innervated muscles in ulnar neuropathy at the elbow.
Background: Quantitative muscle ultrasound (qMUS) provides morphological measurements that can support clinical observation of muscle atrophy and weakness. As the use of qMUS continues to expand, and its potential for broader implementation in neuromuscular evaluation grows, there is a clear need for further validation, particularly in pathologies frequently encountered in electrodiagnostic laboratories, such as cubital tunnel syndrome caused by ulnar neuropathy at the elbow (UNE).
Objective: To evaluate the validity of qMUS evaluation of ulnar-innervated intrinsic hand muscles.
Design: Cross-sectional study.
Participants: Individuals 18 years or older with chronic UNE and healthy controls (HC).
Main outcome measurement: qMUS parameters (muscle thickness [MT], cross-sectional area [CSA], echogenicity) were measured in the first dorsal interosseous (FDI) and abductor digiti minimi (ADM) and were correlated to corresponding negative peak amplitude of the compound muscle action potential measured (CMAP) and key pinch grip strength.
Results: Sixteen adults (8 HC, 8 UNE) participated in the study. Key pinch strength was significantly correlated with FDI MT (r = 0.45, p = .03 [95% CI, 0.05-0.73]) and echogenicity (rho = -0.60, p = .002 [95% CI, -0.82 to -0.24]). FDI MT and echogenicity explained 20% and 36% of pinch strength variance, respectively. Echogenicity was significantly correlated with corresponding CMAP amplitudes (FDI: rho = -0.59, p = .004 [95% CI, -0.81 to -0.21]; ADM: rho = -0.62, p = .002 [95% CI, -0.83 to -0.26]). No statistically significant relationship was found between key pinch strength and FDI CSA (r = 0.35 p = .104 [95% CI, -0.08-0.67]). Furthermore, FDI CMAP was not significantly associated with FDI MT (rho = 0.14, p = .55 [95% CI, -0.32-0.54]) or FDI CSA (rho = 0.041, p = .86 [95% CI, 0.04-0.47]).
Conclusion: qMUS measures of echogenicity and MT (indicators of muscle fibrosis and size, respectively), correlated with key pinch strength and CMAP amplitudes in the FDI and ADM, in a heterogenous group including UNE and HC limbs. qMUS parameters may provide useful complementary markers and deeper insight into neuromuscular health in entrapment neuropathy.
期刊介绍：
Topics covered include acute and chronic musculoskeletal disorders and pain, neurologic conditions involving the central and peripheral nervous systems, rehabilitation of impairments associated with disabilities in adults and children, and neurophysiology and electrodiagnosis. PM&R emphasizes principles of injury, function, and rehabilitation, and is designed to be relevant to practitioners and researchers in a variety of medical and surgical specialties and rehabilitation disciplines including allied health.
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