HAND最新文献

{"title":"Bilateral Kienböck Disease: Associations With Demographic, Systemic, and Radiologic Findings.","authors":"Andrew F Emanuels, Jess Rames, Mehmet Furkan Tunaboylu, Steven L Moran","doi":"10.1177/15589447251350174","DOIUrl":"10.1177/15589447251350174","url":null,"abstract":"<p><strong>Background: </strong>Kienböck disease most frequently affects 1 wrist and rarely occurs bilaterally. The purpose of this study is to describe the natural history and identify risk factors for development of bilateral Kienböck disease.</p><p><strong>Methods: </strong>After institutional review board approval, 350 patients with surgically managed Kienböck disease from 1976 to 2023 were identified. A retrospective review of the electronic medical record was used to collect demographic, clinical, and radiographic information. Two-tailed student <i>t</i>-test was used for continuous variable, and Fisher's exact test was used for categorical variables with analysis of power.</p><p><strong>Results: </strong>Ten of 350 patients (2.9%) had bilateral disease. The mean age was 45 (range: 14-62) years, and 6 out of 10 patients were female. The mean follow-up time was 47 (range: 9-274) months. Three of the 10 patients were laborers. Antecedent trauma (n = 2), prior corticosteroid injection (n = 1), and concomitant autoimmune disease (n = 1) were rare events. There was no difference in Lichtman Stage comparing the dominant and nondominant hands, and 72.2% of wrists were ulnar negative. This was higher but not significantly different than the unilateral affected comparison cohort (60%). Sufficient power was demonstrated (0.99). Eighteen of 20 wrists were treated operatively. Two cases required operative revision due to progression of disease.</p><p><strong>Conclusions: </strong>The cause of bilateral versus unilateral Kienböck disease remains unclear. Bilateral disease was not associated with a higher incidence of autoimmune disease, systemic corticosteroid use, or exposure to heavy manual labor. However, thrombosis leading to avascular necrosis of the lunate may be influenced by hypercoagulable and inflammatory diseases. Surgeons should maintain a high index of suspicion for bilateral disease in patients with these comorbidities. Routine screening of the contralateral wrist is unjustified if the patient is asymptomatic.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"772-777"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12237944/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144583764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ulnar Extrinsic Ligament Tears: Clinical Presentation, Surgical Management, and Outcomes of Surgical Repair Extending Into Long-term Follow-up.","authors":"Monica J Coughlan, Timothy J Irwin, Saral J Patel, Sebastian D Arango, Jacob Zeitlin, Andrew J Miller, A Lee Osterman, Meredith N Osterman","doi":"10.1177/15589447251329563","DOIUrl":"10.1177/15589447251329563","url":null,"abstract":"<p><strong>Background: </strong>Injury to the ulnar extrinsic ligaments often causes significant pain without obvious instability. This study aims to further investigate the clinical presentations and outcomes following ulnar extrinsic ligament repair.</p><p><strong>Methods: </strong>A retrospective analysis of 113 patients who underwent ulnar extrinsic ligament surgery was conducted. Collected data included demographics, clinical presentation, intraoperative findings, and postoperative outcomes, such as grip strength, Quick Disabilities of the Arm, Shoulder and Hand (Q-DASH) scores, complications, and reoperations. Continuous variables were represented by the mean and standard deviation, whereas categorical variables were expressed as counts and percentages. A matched pair <i>T</i>-test was performed for grip strength and Q-DASH changes from pre-op to post-op for patients who had data available at both time points.</p><p><strong>Results: </strong>Preoperative symptoms primarily included wrist pain (100%), difficulties in rotation (16%), and weakness (16%). Intraoperatively, split tears (75%) and avulsions (11%) were common, often accompanied by triangular fibrocartilage complex (TFCC) pathology (83%). Postoperatively, grip strength improved significantly (<i>P</i> < .001), with a mean reduction of 30.3 points in Q-DASH scores (<i>P</i> < .001). Eighty percent of patients returned to work fully, 14% returned in a limited capacity, and 6% were unable to return to work. The overall complication rate was 9%. Reoperation rate was 8.8%. At final follow-up, 83% of patients reported that they would elect to undergo the same surgery again.</p><p><strong>Conclusions: </strong>Ulnar extrinsic ligament injuries frequently present with wrist pain and TFCC pathology. Surgical repair of ulnar extrinsic ligament injuries improves grip strength and functional outcomes with high patient satisfaction.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"730-736"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006109/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144019711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Angiotensin Receptor Blockers Are Not Associated With Protective Benefits in Dupuytren's Disease.","authors":"Daniel A Portney, Jacob M Johnson, Manjot Singh, Alan H Daniels, Joseph A Gil","doi":"10.1177/15589447251343237","DOIUrl":"10.1177/15589447251343237","url":null,"abstract":"<p><strong>Background: </strong>Dupuytren's disease (DD) is a progressive fibroproliferative disorder which is, in part, mediated by transforming growth factor beta 1 (TGF-β1). Angiotensin II receptor blockers (ARBs) have been shown to lead to upstream inhibition of TGF-β1 in several disease processes and proposed as a potential pharmacologic treatment in DD. The purpose of this study was to assess the association of ARBs with DD procedures and recurrence.</p><p><strong>Methods: </strong>We queried the PearlDiver national insurance dataset to identify patients with a diagnosis of DD and at least 3 years of follow-up. A 1:1 matched cohort was made of patients who were not taking ARBs, and the primary outcome was the rate of index procedures for DD. A second 1:1 matched-control cohort was made among those with an index procedure, to assess for the rate of subsequent procedures as a correlate for revision procedures. We used multivariable logistic regression to assess specific factors associated with initial and subsequent procedures.</p><p><strong>Results: </strong>The 3-year rate of index procedures was 21.9% in the ARB group and 17.6% in the control group (<i>P</i> < .001). The 3-year rate of subsequent procedures was 22.9% in the ARB group and 18.0% in the control group (<i>P</i> < .001). Angiotensin receptor blockers were independently associated with 1.32 higher odds of an index procedure (95% confidence interval [CI] 1.25-1.40) and 1.35 (95% CI 1.19-1.54) higher odds of a subsequent procedure.</p><p><strong>Conclusions: </strong>Although we hypothesized that ARBs would be protective, our findings do not show an association with protection. Instead, the odds ratios suggest a higher risk of index and subsequent procedures.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"798-805"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12162535/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144274738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Incidence of Posttraumatic Carpal Tunnel Syndrome After Perilunate Injuries.","authors":"Christopher M Dussik, Amy Phan, Jeffrey Coombs, Thomas Carroll, Matthew St John, Danielle Wilbur","doi":"10.1177/15589447251350170","DOIUrl":"10.1177/15589447251350170","url":null,"abstract":"<p><strong>Background: </strong>Perilunate injuries are a spectrum of high-energy carpus injuries with significant long-term sequelae and generally poor outcomes. Posttraumatic carpal tunnel syndrome (CTS) is an established sequela of these injuries, although its incidence varies widely in literature. This study aims to evaluate the risk of posttraumatic CTS after these injuries and contrast between nonoperative and operative perilunate injuries.</p><p><strong>Methods: </strong>The TriNetX database was queried for all patients treated for either closed or open management of a perilunate injury between January 1, 2010, and December 31, 2023. Operative and nonoperative injuries were defined by inclusion/exclusion of their corresponding Current Procedural Terminology (CPT) codes. Posttraumatic CTS was evaluated using International Classification of Diseases codes and carpal tunnel releases (CTRs) tracked using CPT codes. Relative risk and odds ratios were used to assess differences between nonoperative and operative cohorts.</p><p><strong>Results: </strong>A total of 5,167 perilunate injuries were included in this study. Of these, 2715 (52.5%) underwent nonoperative management, whereas 2,452 (47.5%) received surgical stabilization. Among patients treated nonoperatively, 93 (3.4%) were diagnosed with CTS within 1 year, with 98 (3.6%) requiring CTR. Among operative patients, 565 (23%) were diagnosed with CTS within 1 year of their injury, while 927 operative patients (37.8%) underwent CTRs. Conservatively managed perilunate injuries were at less risk for developing CTS or undergoing CTRs.</p><p><strong>Conclusions: </strong>Approximately 13% of perilunate injuries were associated with CTS within 1 year of treatment. Patients treated operatively were diagnosed with CTS approximately 7 times as frequently and underwent CTR more than 10 times more frequently than their nonoperative counterparts.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"765-771"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12228636/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144567377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outcomes of Corticosteroid Injection for Lacertus Syndrome.","authors":"Michelle Frees, Christina M Ward","doi":"10.1177/15589447251331103","DOIUrl":"10.1177/15589447251331103","url":null,"abstract":"<p><strong>Background: </strong>Lacertus syndrome is a proximal median nerve compression neuropathy characterized by weakness of flexor pollicis longus (FPL), index finger flexor digitorum profundus (FDP), and flexor carpi radialis (FCR) and pain with compression of the median nerve at the lacertus fibrosus. The purpose of this study was to investigate the efficacy of corticosteroid injection (CSI) for symptom management in lacertus syndrome.</p><p><strong>Methods: </strong>A retrospective review of patients with lacertus syndrome who underwent lacertus CSI between 2016 and 2021 was performed. Patient demographics, history, and physical examination were extracted from the electronic medical record. Outcomes included subjective improvement in symptoms, physical examination findings, incidence of repeat lacertus CSI, and/or subsequent surgical lacertus fibrosus release.</p><p><strong>Results: </strong>A total of 64 patients met the inclusion criteria. Chief complaint included hand/forearm pain in 44 patients (69%), median nerve paresthesias in 49 patients (77%), and hand weakness in 9 patients (14%). On examination, 63 (98%) had tenderness at the lacertus fibrosus. Manual motor testing identified weakness of the index FDP in 50 patients, FPL weakness in 42 patients, and FCR weakness in 23 patients. Forty-eight (75%) patients had subjective improvement in symptoms following CSI. Seventeen patients who had an initial response to CSI subsequently underwent surgical lacertus release, with 16 of 17 surgical patients reporting postoperative symptom relief.</p><p><strong>Conclusions: </strong>Seventy-five percent of patients with lacertus syndrome who underwent CSI at the lacertus fibrosus experienced at least temporary subjective symptomatic relief. Of the 35% of patients who had recurrent symptoms after CSI and underwent surgery, the vast majority experienced symptom relief.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"824-827"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11993550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144008507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Union Rates in Ballistic Hand Fractures.","authors":"Cedar Slovacek, Kayla Prezelski, Andi Zhang, Alejandro Ruiz, Heidi Israel, Kevin Chen, Brian Mailey","doi":"10.1177/15589447251325819","DOIUrl":"10.1177/15589447251325819","url":null,"abstract":"<p><strong>Background: </strong>Ballistic hand fractures (BHFs) are complex, multistructure injuries, unique from other hand fractures. We sought to determine BHF union rates and assess factors contributing to nonunion.</p><p><strong>Methods: </strong>Metacarpal or phalangeal BHFs sustained from 2016 to 2023 were identified from an institutional database. Charts and radiographs were reviewed for fracture characteristics and union by 90 days. Fractures without union by 90 days or without minimum 90-day follow-up were excluded. Comminuted fractures were categorized by severity: (1) complete bone loss (NC); (2) partial bony contact (PC); or (3) full (>80%) bony contact (FC). Univariate and multivariate analysis was performed to determine factors associated with nonunion.</p><p><strong>Results: </strong>Ninety-seven BHFs were included. Most were comminuted (78.4%, N = 76). Greater fracture severity was associated with larger bony gap (FC: 2.2 vs PC: 10.2 vs NC: 24.0 mm; <i>P</i> < .001). The overall union rate was 48.5% (N = 47); however, less severe BHF (ie, noncomminuted, FC) had higher rates of union than more severe BHF (ie, PC and NC; 93% and 60.5% vs 36% and 7.7%; <i>P</i> = .003). On multivariate regression, bony gap was an independent predictor of nonunion (<i>P</i> = .02). Thirteen BHFs underwent additional surgery with 90% achieving union within 90 days.</p><p><strong>Conclusions: </strong>Ballistic hand fractures treated with a single surgery demonstrate low union rates (48.5%). Two-stage reconstruction should be considered in all BHFs to improve union rates, particularly when severe comminution or large bony gaps are present. Following stabilization and soft tissue coverage, a second stage with conversion to internal fixation, debridement of devitalized bone, and secondary bone grafting should be performed.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"715-721"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11969489/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143772219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating Outcomes of Flexor Tendon Excision During Trigger Finger Release.","authors":"Joydeep Baidya, Olivia A Opara, Nicholas B Pohl, Harrison Patrizio, Sebastian Fras, Abbey Glover, Pedro K Beredjiklian, Daniel J Fletcher","doi":"10.1177/15589447251350167","DOIUrl":"10.1177/15589447251350167","url":null,"abstract":"<p><strong>Background: </strong>Patients with trigger finger who are refractory to nonsurgical treatments require trigger finger release (TFR) using A1 pulley release, while those with persistent triggering or severe proximal interphalangeal joint contracture may necessitate additional flexor tendon excision (FTE). This study characterizes the frequency of FTE performed at the time of primary TFR and compares outcomes between isolated TFR and TFR with additional FTE for trigger finger management.</p><p><strong>Methods: </strong>A total of 8551 patients who underwent TFR were retrospectively reviewed, among whom 218 (2.5%) required additional FTE. A 2:1 matched isolated TFR group was used for comparison. Patient demographics, complications, and outcomes were compared.</p><p><strong>Results: </strong>A total of 121 patients undergoing TFR with FTE were matched to 243 patients undergoing isolated TFR. The TFR with complete FTE group was youngest and predominantly male. The long finger was most commonly affected across all groups. Wide Awake Local Anesthesia No Tourniquet was the most frequently used type of anesthesia in isolated TFR procedures. While local anesthesia with sedation was more commonly used for TFR with FTE. The proportion of patients who received at least one preoperative steroid injection was highest in the isolated TFR group. All other demographic variables, complications, and patient-reported outcomes were comparable between groups.</p><p><strong>Conclusions: </strong>This study found high rates of postoperative improvement in TFR with FTE groups, as well as similar oral and steroid injections, complication rates, and Disabilities of the Arm, Shoulder, and Hand scores compared to the isolated TFR group. Therefore, TFR with FTE can be a safe and effective surgery with similar outcomes to isolated TFR and no additional risks in appropriately indicated patients.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"785-791"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12228633/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144567376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mini-Open Partial Fasciotomy for Dupuytren Contracture: Time to Reintervention.","authors":"Jonathan Lans, Clay Beagles, Anna Luan, Manish Mehta, Julian Gatta, Chaitanya Mudgal","doi":"10.1177/15589447251339504","DOIUrl":"10.1177/15589447251339504","url":null,"abstract":"<p><p>Background In younger patients with Dupuytren contracture, recurrence is common over time. Mini-open fasciotomy is a surgical approach that maintains virgin tissue at the palmar digital crease. This study's primary aim is to determine time to repeat intervention after mini-open partial fasciotomy for Dupuytren contracture and to report the rate of postoperative complications.MethodsRetrospectively, all patients who underwent minimally invasive open partial fasciotomy for Dupuytren contracture with a pretendinous cord under the care of a single surgeon from 2015 to 2022 were identified. Degree of contracture of the metacarpophalangeal (MP) and proximal interphalangeal (PIP) joints were recorded preoperatively and at each subsequent office visit. Postoperative complications, recurrence of flexion contracture (>20°), and reoperation were recorded.ResultsTwenty-eight patients undergoing procedures on 39 digits with 44 joint contractures were included, consisting of 34 fingers with MP contractures and 5 fingers with both MP and PIP contractures. The median follow-up was 5.0 (interquartile range [IQR] = 3.6-6.9) years. The median preoperative MP contracture was 47.5° (IQR = 35°-62°), which corrected with a median contracture of 15.0° at the final measurement, 2.4 years postoperatively. The median preoperative PIP contracture was 52.5° (IQR = 39°<b>-</b>71°), which corrected with a median 15.0° at the final measurement, 1.5 years postoperatively. Contracture recurrence occurred in 16 (36%) joints (36%) at 3.7 (IQR = 2.7-4.4) years. Younger age (odds ratio [OR] = 0.87, <i>P</i> = .003) and male sex (OR 21.9, <i>P</i> = .014) were independently associated with contracture recurrence. Nine MP joints (20%) underwent reoperation at a median 4.1 (IQR = 3.3-6.0) years.ConclusionsMini-open partial fasciotomy for pretendinous Dupuytren contracture represents a safe and effective treatment for MP and PIP joints with only 1 in 5 joints undergoing repeat intervention within 5 years.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"806-812"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12222104/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hyperlaxity in Hand Surgery: A Cross-sectional Survey.","authors":"Nirbhay S Jain, Jeremiah M Taylor, Jose M Chevalier, Timothy P Liu, Kodi K Azari","doi":"10.1177/15589447251340081","DOIUrl":"10.1177/15589447251340081","url":null,"abstract":"<p><strong>Background: </strong>Joint hypermobility syndrome comprises a spectrum of disorders associated with increased rates of injury and degeneration in all joints. However, there is a paucity of literature on these patients' features within the hand clinic. In this study, we characterize hyperlaxity patients in the hand clinic setting to help inform evaluation and management.</p><p><strong>Methods: </strong>All patients who presented to a single surgeon's clinic over a 10-year period with a diagnosis of joint hypermobility were collected. Retrospective review of demographic data, orthopedic history, presenting symptoms, and diagnoses were collected. The Beighton score was recorded.</p><p><strong>Results: </strong>A total of 210 patients were included-6% of all new patients, or twice the expected rate. The hand clinic provided the first orthopedic evaluation for 46% of patients. Their average age was 37.1 years, with most lacking inciting trauma. The Beighton scores were above 6/9. Most patients had previous diagnoses of wrist pathology but not of hyperlaxity and had multiple, bilateral, and recurrent wrist disorders. Pain was present in 90% of patients. Conditions such as nerve compression and trigger fingers were uncommon.</p><p><strong>Conclusion: </strong>Joint hyperlaxity is prevalent in the hand clinic and is likely underdiagnosed. Hyperlaxity patients are, on average, younger than other hand surgery patients, with multiple complaints and a history of orthopedic injuries. These patients most commonly complain of wrist pathology. Of note, the hand clinic provided the first musculoskeletal specialist evaluation for half the hyperlaxity patients in our cohort, underscoring the importance of early screening, diagnosis, and multidisciplinary therapy in this setting.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"840-845"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12146307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144247546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anomalous Radial Nerve Innervation to the Biceps Brachii: A Case Report With Electrophysiological Confirmation.","authors":"Seyed Houssein Saeed-Banadaky, Milad Gholizadeh","doi":"10.1177/15589447251366673","DOIUrl":"10.1177/15589447251366673","url":null,"abstract":"<p><p>The radial nerve typically innervates the posterior compartment muscles of the arm and forearm, while the biceps brachii is innervated by the musculocutaneous nerve. We report a novel case of radial nerve innervation to the biceps brachii in a 27-year-old woman, identified during surgical fixation of a left humeral shaft fracture. Intraoperative exploration revealed an anomalous branch from the radial nerve to the biceps brachii. Postoperative nerve conduction studies confirmed its functionality, with compound muscle action potentials (CMAP) recorded from the biceps brachii following radial nerve stimulation (latency: 2.3 ms, amplitude: 0.26 mV). Comparatively, musculocutaneous nerve stimulation produced a stronger response (latency: 3.45 ms, amplitude: 2.66 mV), indicating its primary role in biceps innervation. Reduced CMAP amplitudes in the triceps and extensor digitorum communis suggested possible mild radial nerve injury related to the fracture. This anatomical variation may provide compensatory innervation in musculocutaneous nerve injuries, highlighting its clinical relevance in upper limb surgery and electrophysiological assessments.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"NP1-NP4"},"PeriodicalIF":1.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12436313/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}