HANDPub Date : 2025-09-28DOI: 10.1177/15589447251371088
Maxwell S Durtschi, Vinod Rajakumar, Deborah E Kenney, Nicole S Pham, Amy L Ladd, Raymond C Chou
{"title":"Clinical Efficacy of Pulsed Electromagnetic Field Therapy on Thumb Carpometacarpal Joint Pain: A Double-Blind, Randomized, Controlled Trial.","authors":"Maxwell S Durtschi, Vinod Rajakumar, Deborah E Kenney, Nicole S Pham, Amy L Ladd, Raymond C Chou","doi":"10.1177/15589447251371088","DOIUrl":"10.1177/15589447251371088","url":null,"abstract":"<p><strong>Background: </strong>Thumb carpometacarpal (CMC) osteoarthritis (OA) is a common source of hand pain with limited nonoperative treatment options. Pulsed electromagnetic field (PEMF) therapy has been recently shown in studies to be effective in providing sustained pain relief in knee osteoarthritis. This study aimed to assess the efficacy of PEMF therapy for treating thumb CMC OA pain.</p><p><strong>Methods: </strong>This single-center, double-blind, randomized controlled trial included adults with radiographically and/or clinically diagnosed CMC OA who reported an average Numeric Pain Rating Scale (NPRS) score between 3 and 8. Participants were randomized to either a PEMF device or an identical sham device that was used for 8 hours each night for 4 weeks. The primary outcome measure was the change in average daily NPRS from baseline to 4 weeks. Secondary outcome measures included Patient-Rated Wrist/Hand Evaluation (PRWHE) and Single Assessment Numeric Evaluation at 4 and 6 weeks.</p><p><strong>Results: </strong>Sixty-one participants were recruited, and 51 participants completed the study at 4 weeks. Both the PEMF therapy and sham device groups showed improvements in average NPRS and PRWHE at 4 weeks, but there was not a significant improvement between groups. At 6 weeks, there was a significantly greater change in average NPRS from baseline in the PEMF therapy group compared with the sham device group (<i>P</i> = .02).</p><p><strong>Conclusions: </strong>Pulsed electromagnetic field therapy may improve thumb CMC OA pain with sustained relief beyond the treatment period. Future studies will need to assess if adjusting treatment duration or other factors can enhance its efficacy.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251371088"},"PeriodicalIF":1.8,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12477168/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145185613","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}
HANDPub Date : 2025-09-28DOI: 10.1177/15589447251371091
Pieter Reyniers, Dries Verrewaere, Antoon Houben, Frederik Verstreken
{"title":"Short-term Complication Rate in Single- Versus Dual-Mobility Thumb Carpometacarpal Joint Arthroplasty.","authors":"Pieter Reyniers, Dries Verrewaere, Antoon Houben, Frederik Verstreken","doi":"10.1177/15589447251371091","DOIUrl":"10.1177/15589447251371091","url":null,"abstract":"<p><strong>Background: </strong>Single-mobility carpometacarpal (CMC) joint arthroplasty shows good long-term outcomes but has a dislocation risk of 5% to 8%. Newer dual-mobility designs aim to reduce this risk. This study compares the early outcomes and complications of single-mobility Arpe (Zimmer Biomet) versus dual-mobility Touch (Kerimedical) CMC joint prostheses.</p><p><strong>Methods: </strong>We retrospectively reviewed patients who underwent CMC joint arthroplasty at our hospital from August 2018 to December 2022 by a single surgeon. We were able to obtain follow-up information on all included patients. The Arpe prosthesis was used between August 2018 and December 2020 (168 prostheses in 150 patients), while the Touch prosthesis was used from January 2021 onward (184 prostheses in 168 patients).</p><p><strong>Results: </strong>Mean age was 64 years in both groups. Mean follow-up was 26 months for the Arpe group and 31 months for the Touch group. The Arpe group had a 6.5% complication rate, including 7 dislocations (4.2%), 2 trapezial fractures (1.2%), 1 cup loosening (0.6%), and 1 revision for heterotopic ossification (0.6%). In the Touch group, the complication rate was 2.7%, with 1 dislocation (0.5%), 1 impingement on heterotopic ossification (0.5%), 2 cases of cup loosening (1.1%), and 1 symptomatic scaphotrapeziotrapezoid osteoarthritis (0.5%). All complications occurred within the first postoperative year. Implant survival rates were 96% for the Arpe group at 26 months and 97% for the Touch group at 31 months. Dual-mobility prostheses demonstrated significantly fewer dislocations (<i>P</i> = .02).</p><p><strong>Conclusion: </strong>These findings support the use of dual-mobility prostheses to reduce dislocation rate in CMC joint arthroplasty.</p><p><strong>Level of evidence: </strong>3.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251371091"},"PeriodicalIF":1.8,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12477176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145185600","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}
HANDPub Date : 2025-09-28DOI: 10.1177/15589447251371246
Matthew S Miyasaka, Renee Ren, Tristan Tran, Christoph A Schroen, Nikan Namiri, Claudia Siniakowicz, Michael R Hausman
{"title":"Comparing Online Patient Searches About Carpal Tunnel Release Approaches: A Study on Modern Search Analytics.","authors":"Matthew S Miyasaka, Renee Ren, Tristan Tran, Christoph A Schroen, Nikan Namiri, Claudia Siniakowicz, Michael R Hausman","doi":"10.1177/15589447251371246","DOIUrl":"10.1177/15589447251371246","url":null,"abstract":"<p><strong>Background: </strong>Using Google's \"People Also Ask\" feature, this study aims to characterize and compare frequently asked patient questions related to open (OCTR), endoscopic (ECTR), and ultrasound-guided (CTR-US) carpal tunnel release.</p><p><strong>Methods: </strong>Search terms related to each surgical approach were entered into a new, incognito Google Chrome browser. For each term, the top 200 questions and corresponding websites were extracted. Questions were grouped using Rothwell's classification system, while websites were scored using the JAMA Benchmark Criteria. Fisher's exact tests were used to compare classifications, while <i>t</i>-tests were used to compare scores between approaches.</p><p><strong>Results: </strong>Of the 1200 question-website combinations initially extracted, a total of 477 combinations were included for analysis. There were 197 OCTR, 225 ECTR, 30 CTR-US, and 25 comparative combinations. The most common question subclassification was risk/complications for OCTR (19.8%), evaluation of surgery for ECTR (15.7%), and technical details for CTR-US (40%). More than 25% of answers to OCTR and ECTR questions came from social media or commercial sources, while no answers did for CTR-US. There were no significant differences across approaches in total JAMA scores. Despite only being associated with medical practice websites, comparative questions exhibited significantly lower JAMA scores (<i>P</i> < .01).</p><p><strong>Conclusions: </strong>While patient questions and their associated websites on OCTR and ECTR exhibited similar classifications and quality respectively, surgeons should still emphasize the relative risks associated with ECTR. Furthermore, there is a need for high-quality online information on CTR-US and on comparisons between approaches.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251371246"},"PeriodicalIF":1.8,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12477167/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145185541","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}
HANDPub Date : 2025-09-21DOI: 10.1177/15589447251369034
Cameron F Leveille, Michael P Willand, Katelyn J W So, Leah N Barlow, Emma Patchett, Jie Li, Kyla N Sask, James R Bain
{"title":"Electrical Stimulation Therapy to Accelerate Nerve Regeneration Remains Effective Following Postoperative Application of Lidocaine.","authors":"Cameron F Leveille, Michael P Willand, Katelyn J W So, Leah N Barlow, Emma Patchett, Jie Li, Kyla N Sask, James R Bain","doi":"10.1177/15589447251369034","DOIUrl":"10.1177/15589447251369034","url":null,"abstract":"<p><strong>Background: </strong>Brief electrical stimulation (ES) of injured peripheral nerves for 1 hour has been shown to accelerate nerve regeneration with proximal action potential conduction to the neuron cell body, a requirement to elicit therapeutic benefit. Local anesthetic is often used to manage pain in patients. However, using lidocaine after ES therapy has been controversial. We assessed the effects of extraneural usage of lidocaine after ES therapy on nerve regeneration in a rodent nerve injury model.</p><p><strong>Methods: </strong>Lewis rats underwent tibial nerve transection and immediate repair and randomized to 4 groups: control (REP), extraneural lidocaine alone (REP + LIDO), 60-minute ES (60 ES), and 60-minute ES with extraneural lidocaine (60 ES + LIDO). The tibial nerve was retrograde labeled distally from the neurorrhaphy 28 days post repair. Spinal cords and dorsal root ganglia were harvested to assess motor and sensory neuron counts. Data were analyzed using 1-way analysis of variance (ANOVA) with a post-hoc Tukey correction.</p><p><strong>Results: </strong>Using lidocaine after nerve repair did not affect nerve regeneration in the control group (REP vs REP + LIDO) or ES group (60 ES vs 60 ES + LIDO), with motor and sensory neuron counts not statistically different between groups. Electrical stimulation therapy showed at least a 60% increase in motor and sensory neuron counts than controls, a statistically significant effect (<i>P</i> < .001).</p><p><strong>Conclusions: </strong>Extraneural usage of lidocaine after ES does not abolish the improved effect of ES on nerve regeneration. Future clinical studies should evaluate the usage of subcutaneous injection of lidocaine post ES for analgesia control.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251369034"},"PeriodicalIF":1.8,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12450895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102699","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}
HANDPub Date : 2025-09-18DOI: 10.1177/15589447251366678
Thor S Stead, Neel Vishwanath, Nikhil Sobti, Tareq Kheirbek, Amy C Kite
{"title":"The Modified 5-Item Frailty Index is a Predictor of Perioperative Complications in Digital Replantation.","authors":"Thor S Stead, Neel Vishwanath, Nikhil Sobti, Tareq Kheirbek, Amy C Kite","doi":"10.1177/15589447251366678","DOIUrl":"10.1177/15589447251366678","url":null,"abstract":"<p><strong>Background: </strong>Digit replantation has a significant risk of postoperative complications including an estimated reoperation rate around 14%. This study evaluates the modified frailty index 5 (mFI-5) in predicting postoperative complications including reoperation for digit replantation.</p><p><strong>Methods: </strong>The American College of Surgeons' National Surgical Quality Improvement Program database (2007-2019) was queried to identify patients who underwent upper extremity blood vessel repair distal to the wrist. Demographics, patient characteristics, mFI-5 scores, and all complications, including reoperation and readmission, were analyzed using univariate and multivariate analyses to identify associations between mFI-5 and complications.</p><p><strong>Results: </strong>We identified 1336 patients who underwent digit replantation. Of those, 99 patients (7.4%) had mFI-5 ≥ 3. Frail patients were defined as having mFI-5 ≥ 3 based on prior literature. Higher mFI-5 scores correlated with increased rates of all-cause complications (mFI-5 ≥ 3: 51.5% vs mFI-5 = 0: 9.2%, <i>P</i> < .001), readmission (mFI-5 ≥ 3: 15.8% vs mFI-5 = 0: 2.2%, <i>P</i> < .001), and reoperation (mFI-5 ≥ 3: 8.8% vs mFI-5 = 0: 3.1%, <i>P</i> < .001). Multivariate analysis indicated that an mFI-5 score ≥ 3 significantly increased the rates of any complication (odds ratio [OR] = 9.1, 95% confidence interval [CI], 3.9-21.2, <i>P</i> < .001), mortality (OR = 5.4, 95% CI, 1.1-27.0, <i>P</i> = .04), surgical complications (OR = 7.5, 95% CI, 2.5-22.9, <i>P</i> < .001), and medical complications (OR = 13.4, 95% CI, 3.9-46.7, <i>P</i> < .001). These patients also had lower odds of home discharge (OR = 0.35, 95% CI, 0.22-0.56, <i>P</i> < .001) and higher odds of unplanned readmission (OR = 1.4, 95% CI, 1.3-1.5, <i>P</i> < .001) compared with those with mFI-5 = 0.</p><p><strong>Conclusions: </strong>The mFI-5 is an effective tool for predicting adverse outcomes in digit replantation. It is simple to calculate preoperatively and aids in risk stratification, perioperative counseling, operative planning, and postoperative outcomes.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251366678"},"PeriodicalIF":1.8,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12446283/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145080521","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}
HANDPub Date : 2025-09-18DOI: 10.1177/15589447251369031
Stella den Hengst, Koen Eppink, Navid Ghaderi, Krystle R Tuaño, Kyle R Eberlin, Abhiram R Bhashyam
{"title":"Secondary Carpal Tunnel Release After Surgical Fixation of the Distal Radius: A Case-Control Study.","authors":"Stella den Hengst, Koen Eppink, Navid Ghaderi, Krystle R Tuaño, Kyle R Eberlin, Abhiram R Bhashyam","doi":"10.1177/15589447251369031","DOIUrl":"10.1177/15589447251369031","url":null,"abstract":"<p><strong>Background: </strong>Carpal tunnel syndrome (CTS) may occur after surgical fixation of a distal radius fracture (DRF) and can result in muscle atrophy and permanent nerve damage if untreated. Despite increased surgical treatments for DRFs, the frequency and risk factors for secondary carpal tunnel release (CTR) after DRF fixation remain unclear. This study aims to identify the frequency of secondary CTR after DRF fixation and factors associated with secondary release.</p><p><strong>Methods: </strong>Adult patients who underwent either a secondary CTR within 1 year after surgical fixation of the DRF (secondary release case group) or a concomitant CTR (concomitant release control group) between 2001 and 2023 were identified. Secondary release cases were matched 1:4 to concomitant release controls. Patient, diagnosis, and treatment characteristics were collected and analyzed. Multivariable logistic regression using backward selection was performed to identify risk factors for secondary CTR.</p><p><strong>Results: </strong>Of 6612 surgically treated DRFs, 77 patients (1.2%) underwent secondary release within the first year, and 948 patients (14.3%) underwent concomitant release. Nerve compression symptoms before initial surgical fixation of the DRF were observed in 26 patients (33.8%). Multivariable logistic regression revealed that hypothyroidism and osteoporosis were statistically significant predictors for secondary CTR after surgical fixation of the DRF. The scores of Quick Disabilities of the Arm, Shoulder, and Hand and Patient-Reported Outcomes Measurement Information System (PROMIS)-Upper Extremity were clinically similar for both groups of patients.</p><p><strong>Conclusion: </strong>Of all patients undergoing CTR within 1 year of DRF fixation, 92.5% underwent concomitant release, and 7.5% underwent secondary release. Patients diagnosed with hypothyroidism or osteoporosis were significantly more likely to undergo a secondary surgery for CTR.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251369031"},"PeriodicalIF":1.8,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12446280/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145080486","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}
HANDPub Date : 2025-09-18DOI: 10.1177/15589447251371089
Yibin B Zhang, Fielding S Fischer, Matthew V Abola, Daniel A Osei, Scott W Wolfe, Troy B Amen
{"title":"Do ChatGPT and Gemini's Recommendations Align With Established Guidelines for Hand and Upper Extremity Surgery?","authors":"Yibin B Zhang, Fielding S Fischer, Matthew V Abola, Daniel A Osei, Scott W Wolfe, Troy B Amen","doi":"10.1177/15589447251371089","DOIUrl":"10.1177/15589447251371089","url":null,"abstract":"<p><strong>Background: </strong>The use of large language models (LLMs) such as ChatGPT and Gemini in clinical settings has surged, presenting potential benefits in reducing administrative workload and enhancing patient communication. However, concerns about the clinical accuracy of these tools persist. This study evaluated the concordance of ChatGPT and Gemini's recommendations with American Academy of Orthopedic Surgeons (AAOS) clinical practice guidelines (CPGs) for carpal tunnel syndrome, distal radius fractures, and glenohumeral joint osteoarthritis.</p><p><strong>Methods: </strong>ChatGPT (version 4o) and Gemini (version 1.5 Flash) were queried using structured text-based prompts aligned with AAOS CPGs. The LLMs' outputs were analyzed by blinded reviewers to determine concordance with the guidelines. Concordance rates were compared across models, topics, and guideline strength using descriptive statistics and McNemar's test. The transparency of responses, including source citation, was also assessed.</p><p><strong>Results: </strong>A total of 174 recommendations were generated, with an overall concordance rate of 62.1%. When comparing concordance rates between LLMs, there was no statistically significant difference between ChatGPT and Gemini (66.7% vs 57.5%, <i>P</i> = .131). Concordance varied by topic and guideline strength, with ChatGPT performing best for moderately supported guidelines. Both models demonstrated low citation transparency. Gemini provided sources for 39.1% of recommendations, significantly more than ChatGPT's 3.5% (<i>P</i> < .0001).</p><p><strong>Conclusions: </strong>Despite modest concordance rates, both models exhibited significant limitations, including variability across topics and guideline strengths, as well as insufficient citation transparency. These findings highlight the challenges in integrating LLMs into clinical practice and emphasize the need for further refinement and evaluation before adoption in hand surgery.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251371089"},"PeriodicalIF":1.8,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12446276/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145080553","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":"Evaluation of Flexor Digitorum Superficialis-Small Function: A Novel Dynamic Assessment Technique in Professional Music Performance.","authors":"Haoyang Chen, Hao-Xing Lai, Siddarth Venkateswaran, Shuxiang Yang, Brett Stemple, Mandy Zhang, Zi Qiang Glen Liau","doi":"10.1177/15589447251369032","DOIUrl":"10.1177/15589447251369032","url":null,"abstract":"<p><strong>Background: </strong>The flexor digitorum superficialis of the little finger (FDS-small) exhibits anatomical variation, with absence reported in 2% to 30% of individuals. As FDS is the only flexor of the proximal interphalangeal joint (PIPJ), its absence may affect finger dexterity, particularly in professional musicians who depend on precise finger control. This study evaluates the impact of FDS-small presence or absence on the technical abilities of pianists and string musicians using novel dynamic assessment tools.</p><p><strong>Methods: </strong>Thirty-one Bachelor of Music students (21 string players, 10 pianists) were assessed for FDS-small function and classified as \"independent,\" \"common,\" or \"absent.\" Tests included grip strength, static gap, and stretch tests, and a novel assessment method comprising custom-composed double-stop trill etudes for piano and strings. Technical performance was evaluated by 2 professional musicians using predefined criteria. Statistical analyses were conducted using Fisher's exact tests, <i>t</i> tests, analysis of variance, and nonparametric equivalents.</p><p><strong>Results: </strong>Ten participants had absent FDS-small function in at least 1 hand. Pianists with bilateral absent FDS-small demonstrated superior coordination and regularity compared with those with FDS-small presence, while FDS-small absence did not significantly affect string players. Female pianists excelled in dynamic tests despite male musicians' higher grip strength and trill speed.</p><p><strong>Conclusion: </strong>Absence of FDS-small does not impair, and may even enhance, fine motor performance in pianists. For string musicians, FDS-small status does not influence technique. These findings may contribute to evaluating the risk versus benefits of FDS-small surgical repair and have implications for instrument selection and pedagogy.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251369032"},"PeriodicalIF":1.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12440912/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145075186","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}
HANDPub Date : 2025-09-14DOI: 10.1177/15589447251366673
Seyed Houssein Saeed-Banadaky, Milad Gholizadeh
{"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":"15589447251366673"},"PeriodicalIF":1.8,"publicationDate":"2025-09-14","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}
HANDPub Date : 2025-09-09DOI: 10.1177/15589447251366675
Kevin Kooi, Lente H M Dankelman, Kristen Reikersdorfer, Huub H de Klerk, Kamilcan Oflazoglu, Neal C Chen
{"title":"The Prevalence of Scapholunate Signal Abnormalities on Magnetic Resonance Imaging.","authors":"Kevin Kooi, Lente H M Dankelman, Kristen Reikersdorfer, Huub H de Klerk, Kamilcan Oflazoglu, Neal C Chen","doi":"10.1177/15589447251366675","DOIUrl":"10.1177/15589447251366675","url":null,"abstract":"<p><strong>Background: </strong>Although trauma is a major cause of symptomatic scapholunate interosseous ligament (SLIL) pathology, many patients do not recall a specific injury or repetitive trauma. We report on: (1) the prevalence of SLIL signal changes in patients who underwent wrist magnetic resonance imaging (MRI) for various indications; and (2) the prevalence of SLIL signal changes on MRI in patients without prior wrist trauma.</p><p><strong>Methods: </strong>This is a retrospective study evaluating 1021 patients who underwent wrist MRI or magnetic resonance arthrogram. We collected data on SLIL signal changes on MRI. Patients were divided into 6 groups, based on age, to calculate the proportions of SLIL signal changes across different age groups.</p><p><strong>Results: </strong>There were a total of 317 (31%) patients with SLIL signal changes, of whom 264 (26% from 1021 and 83% from 317) had a documented low clinical suspicion of SLIL pathology. The prevalence was 15% among 18 to 30 years old and increased to 50% in those above 70 years old. Of the 317 patients with SLIL signal changes, 161 (51%) had no documented prior wrist trauma. The prevalence of SLIL signal changes in this group was 28% in 18 to 30 years old and increased to 80% in patients older than 70 years.</p><p><strong>Conclusions: </strong>Magnetic resonance imaging signal changes demonstrating SLIL pathology in patients of a younger age may be more clinically meaningful as there is a lower prevalence of incidental SLIL pathology in these patients. Furthermore, it should be kept in mind that SLIL changes on MRI in older patients are common and may not represent acute pathology.</p>","PeriodicalId":12902,"journal":{"name":"HAND","volume":" ","pages":"15589447251366675"},"PeriodicalIF":1.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12420648/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145023153","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}