{"title":"Digital Papillary Adenocarcinoma: A Case Presentation and Literature Review","authors":"Haley F. Pate MD , David B. Fulton MD","doi":"10.1016/j.jhsg.2024.09.002","DOIUrl":"10.1016/j.jhsg.2024.09.002","url":null,"abstract":"<div><div>Digital papillary adenocarcinoma is a rare cutaneous tumor of eccrine origin that often presents as a papule or nodule on the dorsal aspect of a finger. It is challenging to diagnose because of its rarity, its benign appearance, and the lack of specific clinical or histological features. Excision is recommended, given the malignant nature and variable recurrence rates with metastases well documented in the literature. We present a case of a 49-year-old man with a digital papillary adenocarcinoma on his right middle finger. We discuss this patient’s treatment course and the lack of standardized treatment guidelines. Further research is needed to establish evidence-based management strategies for digital papillary adenocarcinoma.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 934-936"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706697","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}
Michael J. McKernan MD , Miguel A. Diaz MS , Michael Kucharik MD , Nino Coutelle MD , Peter Simon PhD , Michael C. Doarn MD
{"title":"Biomechanical Comparison of Surgical Steel Wiring and Suture Tape Tension Band Techniques for Arthrodesis of the Metacarpophalangeal and Proximal Interphalangeal Joint","authors":"Michael J. McKernan MD , Miguel A. Diaz MS , Michael Kucharik MD , Nino Coutelle MD , Peter Simon PhD , Michael C. Doarn MD","doi":"10.1016/j.jhsg.2024.08.014","DOIUrl":"10.1016/j.jhsg.2024.08.014","url":null,"abstract":"<div><h3>Purpose</h3><div>The purpose of this study was to evaluate the biomechanical properties of SutureTape as an alternative technique for arthrodesis of the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joint arthrodesis when compared with surgical steel wire.</div></div><div><h3>Methods</h3><div>A total of 32 fingers (index, long, ring, and small) from two matched pair cadaveric hands were used. K-wire and surgical steel wire were used for MCP and PIP joint arthrodesis of the control group (group I), whereas K-wire and SutureTape were used for the experimental group (group II). Each sample was potted in high strength resin and secured to a custom fixture mounted to a hydraulic test frame. Each sample underwent cantilever bending in four directions (flexion, extension, ulnar, and radial) at a rate of 0.01 mm/s until a maximum force of 10 N. Thereafter, ramp to failure in extension at a rate of 20 mm/min was performed. Metrics of interest were bending stiffness (N/mm), displacement (mm), and peak load to failure (N), along with failure modes.</div></div><div><h3>Results</h3><div>For MCP arthrodesis, during cantilever bending in flexion direction, surgical steel construct was found to be stiffer when compared with suture tape (<em>P</em> = .036) and have less displacement (<em>P</em> = .040). No significant differences were detected for stiffness or displacement in extension, ulnar, or radial bending. During the ramp to failure, no significant differences were found for force, stiffness, or displacement. For PIP arthrodesis, the only significant difference detected was for displacement during ulnar bending (<em>P</em> = .035).</div></div><div><h3>Conclusions</h3><div>For MCP and PIP arthrodesis, the biomechanical performance of the SutureTape arthrodesis was similar to that of the steel wire across all loading conditions except for flexion and ulnar loading.</div></div><div><h3>Clinical relevance</h3><div>The use of SutureTape for MCP and PIP joint arthrodesis may provide equivalent biomechanical performance to that of steel wire, making it a viable alternative clinically.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 898-902"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707190","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}
Jacqueline Van Gheem MD , Alexis Rounds MD , Taylor Blackwood DO , Cameron Cox BA , Evan J. Hernandez MBA , Desirae McKee MD , Brendan MacKay MD
{"title":"Case Series of Traumatic Peripheral Nerve Injuries in Pediatric Patients Treated with Allograft Repair","authors":"Jacqueline Van Gheem MD , Alexis Rounds MD , Taylor Blackwood DO , Cameron Cox BA , Evan J. Hernandez MBA , Desirae McKee MD , Brendan MacKay MD","doi":"10.1016/j.jhsg.2024.05.008","DOIUrl":"10.1016/j.jhsg.2024.05.008","url":null,"abstract":"<div><h3>Purpose</h3><div>In the adult literature, allograft reconstruction of gapped peripheral nerve injuries has gained popularity over autologous nerve grafting. Allografts have demonstrated similar recovery while eliminating donor site morbidity. There is no well-defined incidence or treatment of such injuries in children. Our study explores the epidemiology and outcomes of traumatic pediatric peripheral nerve injuries treated with allograft.</div></div><div><h3>Methods</h3><div>This is a retrospective case series of a prospectively maintained database of all pediatric patients who underwent nerve allograft reconstruction at a Level I trauma center between September 2011 and July 2021.</div></div><div><h3>Results</h3><div>We identified 24 allograft nerve reconstructions in 18 patients, average age 12.9 years (range 1.5–17.0) and 78% male. Five patients (28%) were injured in a motor vehicle accident, and four were injured by sharp laceration, machinery, and blast injury (22%). The most injured nerve was digital (n = 10, 42%) followed by 8 (33%) ulnar, and 4 (17%) median. The average gap length was 30.3 ± 23.8 mm (range 4–87 mm). Fifteen nerves were repaired within 24 hours (63%). Average follow-up was 13.7 ± 14.5 months (range 1.6–46.8 months). At final follow-up, 9 (38%) had full sensory recovery, 6 (25%) protective sensation, 2 (8%) deep pressure, and 1 (4%) no sensation but a positive Tinel’s sign.</div></div><div><h3>Conclusions</h3><div>Allograft reconstruction is a viable option for the treatment of traumatic pediatric peripheral nerve injuries with gaps not amenable to direct repair.</div></div><div><h3>Type of study/level of evidence</h3><div>Therapeutic IV.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 801-807"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706724","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}
Tiffany N. Bridges DO , Adam S. Kohring DO , Alexis A. Kasper BS , Amir R. Kachooei MD, PhD , Rick Tosti MD , Michael Rivlin MD
{"title":"When Numbness and Tingling Play a Role—Sexual Function in Compressive Neuropathy","authors":"Tiffany N. Bridges DO , Adam S. Kohring DO , Alexis A. Kasper BS , Amir R. Kachooei MD, PhD , Rick Tosti MD , Michael Rivlin MD","doi":"10.1016/j.jhsg.2024.08.011","DOIUrl":"10.1016/j.jhsg.2024.08.011","url":null,"abstract":"<div><h3>Purpose</h3><div>Compressive neuropathies such as carpal tunnel and cubital tunnel syndrome can lead to sensation loss, muscle weakness, joint contractures, and disrupted sleep. The interplay between these conditions and the effect on patients’ intimacy is unknown. The purpose of this study was to examine sexual function before and after surgery in patients undergoing carpal tunnel release or cubital tunnel release.</div></div><div><h3>Methods</h3><div>All patients 18 years or older who underwent unilateral or bilateral carpal tunnel release and/or cubital tunnel release, performed either open or endoscopically, between January 2021 and August 2022, were retrospectively identified. An anonymous 21-question survey assessing pre- and post-operative sexual function was sent electronically to patients who were between 3 months and 2 years postprocedure.</div></div><div><h3>Results</h3><div>A total of 47% of respondents reported that their upper extremity symptoms disrupted their sexual activity. Before surgery, various challenges were reported: paresthesia (84%), pain (61%), reduced strength (53%), and reduced motion (40%). A total of 65% of patients changed positions before surgery, most frequently by avoiding weight-bearing (79%) and using the affected arm (55%). After surgery, 61% reported an easier time engaging in sexual activity, which was most frequently attributed to diminished paresthesia (69%) and pain (67%). A total of 73% of patients resumed sexual activities within 3 weeks of surgery. Ultimately, 32% of patients were more satisfied with their sexual function after surgery.</div></div><div><h3>Conclusions</h3><div>Sexual function is intimately tied to the physical and mental health of individuals. Surgical release improves sexual function and satisfaction.</div></div><div><h3>Type of study/level of evidence</h3><div>Retrospective Case–Control Cohort, Therapeutic III.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 796-800"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707195","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}
Abdullah AlShenaiber BHSc , Shaishav Datta HBSc, MD , Adam J. Mosa MD, MSc , Paul A. Binhammer MD, MSc , Edsel B. Ing MD, MPH, PhD
{"title":"Large Language Models in the Diagnosis of Hand and Peripheral Nerve Injuries: An Evaluation of ChatGPT and the Isabel Differential Diagnosis Generator","authors":"Abdullah AlShenaiber BHSc , Shaishav Datta HBSc, MD , Adam J. Mosa MD, MSc , Paul A. Binhammer MD, MSc , Edsel B. Ing MD, MPH, PhD","doi":"10.1016/j.jhsg.2024.07.011","DOIUrl":"10.1016/j.jhsg.2024.07.011","url":null,"abstract":"<div><h3>Purpose</h3><div>Tools using artificial intelligence may help reduce missed or delayed diagnoses and improve patient care in hand surgery. This study aimed to compare and evaluate the performance of two natural language processing programs, Isabel and ChatGPT-4, in diagnosing hand and peripheral nerve injuries from a set of clinical vignettes.</div></div><div><h3>Methods</h3><div>Cases from a virtual library of hand surgery case reports with no history of trauma or previous surgery were included in this study. The clinical details (age, sex, symptoms, signs, and medical history) of 16 hand cases were entered into Isabel and ChatGPT-4 to generate top 10 differential diagnosis lists. Isabel and ChatGPT-4’s inclusion and median rank of the correct diagnosis within each list were compared. Two hand surgeons were then provided each list and asked to independently evaluate the performance of the two systems.</div></div><div><h3>Results</h3><div>Isabel correctly identified 7/16 (44%) cases with a median rank of two (interquartile range = 3). ChatGPT-4 correctly identified 14/16 (88%) of cases with a median rank of one (interquartile range = 1). Physicians one and two, respectively, preferred the lists generated by ChatGPT-4 in 12/16 (75%) and 13/16 (81%) of cases and had no preference in 2/16 (13%) cases.</div></div><div><h3>Conclusions</h3><div>ChatGPT-4 had significantly greater diagnostic accuracy within our sample (<em>P</em> < .05) and generated higher quality differential diagnoses than Isabel. Isabel produced several inappropriate and imprecise differential diagnoses.</div></div><div><h3>Clinical relevance</h3><div>Despite large language models’ potential utility in generating medical diagnoses, physicians must continue to exercise high caution and use their clinical judgment when making diagnostic decisions.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 847-854"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706769","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}
Michael G. Flood MD , Rebecca Tananbaum BA , Tyler J. Tantillo DO , Marci D. Jones MD
{"title":"Possible Bupivacaine Induced Hepatitis Following Wide Awake, Local Anesthesia, No Tourniquet Carpal Tunnel Surgery: A Case Report","authors":"Michael G. Flood MD , Rebecca Tananbaum BA , Tyler J. Tantillo DO , Marci D. Jones MD","doi":"10.1016/j.jhsg.2024.08.010","DOIUrl":"10.1016/j.jhsg.2024.08.010","url":null,"abstract":"<div><div>In this case report, we present a novel occurrence of acute hepatitis 2 weeks after local bupivacaine injection for wide awake, local anesthesia, no tourniquet carpal tunnel release. Laboratory and biopsy analysis confirmed cholestatic, drug-induced hepatitis that was successfully managed with conservative treatment. With a paucity of potential bupivacaine-induced hepatitis cases reported within the literature, the importance of broad differential diagnosis, meticulous medication reconciliation, and consideration of this rare complication should not be understated by the astute hand surgeon.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 931-933"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706696","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":"Anatomic C Scapholunate Reconstruction Technique: For Complete Dissociation of the Scapholunate Interval","authors":"Robert Kalapos MD , Mollie Manley MD","doi":"10.1016/j.jhsg.2024.08.015","DOIUrl":"10.1016/j.jhsg.2024.08.015","url":null,"abstract":"<div><div>This surgical technique article describes the anatomic C scapholunate reconstruction technique. It is indicated for complete acute or chronic scapholunate ligament dissociation. The technique addresses severe scapholunate interval gapping, ulnar translocation of the lunate, and rotational/dorsal intercalated segment instability. The C-shaped ligament is cradled from dorsal to volar using a symmetric four anchor/synthetic tape construct through a single dorsal incision and hyperflexion of the wrist. It does not require any volar incision/approach, as previously described techniques, and also avoids vascular disruption of the scaphoid ridge. An athlete patient case with illustration is also presented, who was treated with anatomic C scapholunate reconstruction on one wrist and all-dorsal scapholunate reconstruction on the other wrist. The two wrists are compared, and postoperative management with technique pearls and pitfalls are described.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 903-909"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707191","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":"Treating a Scar-Tethered Median Nerve Neuroma in Continuity With a Fly-Over Nerve Grafting Technique","authors":"Eleni Karagergou MD, PhD , Emmanouil Pantelidis MD , Dimitrios Kitridis MD , Panagiotis Givissis MD, PhD","doi":"10.1016/j.jhsg.2024.08.001","DOIUrl":"10.1016/j.jhsg.2024.08.001","url":null,"abstract":"<div><div>Peripheral nerve neuromas may present significant therapeutic challenges especially when neuromas in continuity are scar-tethered to adjacent vital structures. We report a case of a patient who presented with delayed neurotmesis of median and ulnar nerves in the arm while extensive scarring of the median nerve was found in close proximity to the repaired brachial artery. For the surgical restoration of the continuity of the median nerve, the scarred segment was left in situ to avoid reinjury of the brachial artery and a “fly-over” nerve grafting technique with sural nerve autografts was employed.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 924-926"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707194","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}
David A. Rivetti MD, MS , Maria A. Munsch MD , Jeffrey C. Wera MD , Duc M. Nguyen MD , John R. Fowler MD
{"title":"Suture Suspensionplasty Compared With Ligament Reconstruction and Tendon Interposition for Surgical Treatment of Thumb Carpometacarpal Arthritis","authors":"David A. Rivetti MD, MS , Maria A. Munsch MD , Jeffrey C. Wera MD , Duc M. Nguyen MD , John R. Fowler MD","doi":"10.1016/j.jhsg.2024.07.014","DOIUrl":"10.1016/j.jhsg.2024.07.014","url":null,"abstract":"<div><h3>Purpose</h3><div>Thumb carpometacarpal (CMC) arthritis is the most common arthritis of the hand, with most studies demonstrating little difference in outcomes between various surgical treatment techniques. However, trapeziectomy, followed by ligament reconstruction and tendon interposition (LRTI), remains the technique of choice among hand surgeons in the United States. In 2009, suture suspensionplasty (SS) was first described as a less invasive alternative to LRTI. The purpose of this study was to compare surgical details as well as patient-reported and radiographic outcomes between SS and LRTI for thumb CMC arthroplasty.</div></div><div><h3>Methods</h3><div>Following Institutional Review Board approval, 111 extremities were retrospectively identified in 104 patients who underwent carpometacarpal arthroplasty. Two age-matched cohorts were developed for patients having undergone LRTI (n = 58) or SS (n = 53) by one of three fellowship-trained hand surgeons. Tourniquet times were compared, and outcome measures included first metacarpal scaphoid space (FMSS) measured on 2-week postoperative radiographs, as well as Quick Disabilities of the Arm, Shoulder, and Hand (<em>Quick</em>DASH) score and pain score on a 10-point visual analog scale (VAS) from the preoperative visit as well as at 2 weeks, 6 weeks, and 3 months following surgery.</div></div><div><h3>Results</h3><div>There were no demographic differences between the two cohorts. There was no statistical difference between cohorts in VAS scores at any point in time. The SS cohort reported better <em>Quick</em>DASH scores at the 6-week postoperative visit; otherwise, <em>Quick</em>DASH scores did not differ between cohorts. The SS technique had shorter tourniquet times, and patients had less radiographic subsidence as evidenced by larger postoperative FMSS.</div></div><div><h3>Conclusions</h3><div>The SS arthroplasty technique demonstrated comparable early clinical results to LRTI. Furthermore, SS arthroplasty, which alleviates the need for tendon transfers and additional incisions with LRTI, had shorter tourniquet time, with less subsidence of the first metacarpal in the first 2 weeks.</div></div><div><h3>Type of study/level of evidence</h3><div>Therapeutic IV.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 861-864"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706716","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}
Mitchell C. Harris MD , Ryan J. Bickley MD , Pooyan Abbasi MSc , Gabriel J. Yohe MS , Kenneth R. Means MD , Scott M. Tintle MD , Aviram M. Giladi MD, MS
{"title":"Unicortical Versus Bicortical Proximal Locking Screw for Prevention of Peri-Implant Fracture: A Biomechanical Analysis of an Osteoporotic Distal Radius Model","authors":"Mitchell C. Harris MD , Ryan J. Bickley MD , Pooyan Abbasi MSc , Gabriel J. Yohe MS , Kenneth R. Means MD , Scott M. Tintle MD , Aviram M. Giladi MD, MS","doi":"10.1016/j.jhsg.2024.07.004","DOIUrl":"10.1016/j.jhsg.2024.07.004","url":null,"abstract":"<div><h3>Purpose</h3><div>Osteoporotic patients are at risk of peri-implant fractures after distal radius fixation. A unicortical screw in the proximal hole of the plate can theoretically decrease stress riser formation by eliminating the hole in the far bone cortex. This construct has been proposed in orthopedic literature to prevent peri-implant fractures but has not been tested in an osteoporotic distal radius model.</div></div><div><h3>Methods</h3><div>Eleven paired cadaver radii were harvested and plated with four-hole titanium volar distal radius plates. No osteotomies were created. The fixation constructs were identical except that group A used a bicortical proximal locking screw and group B used a unicortical proximal locking screw. Bone mineral density was estimated using radiographic measurements. The samples were potted and tested for four-point bending stiffness, torsion stiffness, and load to failure.</div></div><div><h3>Results</h3><div>Between the bicortical and unicortical screw groups, there was no significant difference in four-point bending stiffness (110.8 vs 106.2 N/mm, apex volar bending; 105.4 vs 107.1 N/mm, apex dorsal bending) or torsional stiffness (430.6 vs 427.6 N-mm/degree, internal rotation; 430.8 vs 429.7 N-mm/degree, external rotation). There was also no significant difference in load to failure with apex dorsal four-point bending (795.3 vs 770.0 N).</div></div><div><h3>Conclusions</h3><div>This study shows that a healed osteoporotic distal radius volar plate construct with a proximal unicortical locking screw is not statistically different from a bicortical screw in stiffness or load to failure in apex dorsal bending. Although a unicortical locking screw has been proposed as a mechanism to prevent stress risers at the proximal aspect of the distal radius plate, this study suggests no significant difference when compared with a bicortical locking screw.</div></div><div><h3>Clinical relevance</h3><div>There is no significant biomechanical advantage to unicortical over bicortical locking screws in the proximal hole of a distal radius plate to prevent diaphyseal peri-implant fractures in osteoporotic patients.</div></div>","PeriodicalId":36920,"journal":{"name":"Journal of Hand Surgery Global Online","volume":"6 6","pages":"Pages 842-846"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706771","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}