Journal of Plastic Surgery and Hand Surgery最新文献

{"title":"Efficacy and safety of volar locking plate versus cast immobilization for distal radius fractures: a systematic review and meta-analysis of randomized controlled trials.","authors":"Faxiang Li, Yuzhong Tan, Liuchao Cui, Lin Tian","doi":"10.2340/jphs.v59.41372","DOIUrl":"https://doi.org/10.2340/jphs.v59.41372","url":null,"abstract":"<p><p>Volar locking plates (VLPs) are increasingly used for distal radius fractures (DRFs), yet their efficacy compared to cast immobilization remains debated. This meta-analysis aimed to compare VLPs versus cast immobilization for DRFs across various follow-up durations. Randomized controlled trials reporting patient-reported functional scores, wrist range of motion (ROM), radiological assessments, and complications were included. Meta-analysis was performed for 6-week, 3-month, 6-month, 12-month, and >12-month follow-ups. Subgroup analysis stratified studies by age group, ≥ 60 years and < 60 years. VLPs showed significantly lower Disabilities of the Arm, Shoulder, and Hand (DASH) scores at 6 weeks (p < 0.001), 3 months (p < 0.001), 12 months (p = 0.012), and > 12 months (p < 0.001), and lower PRWE scores at 6 weeks (p < 0.001), 3 months (p = 0.048), and >12 months (p = 0.032). Wrist ROM favored VLPs at 6 weeks (p < 0.05), with higher flexion and supination at 3 months (p = 0.027) and 12 months (p = 0.003). Radiologically, VLPs showed improved parameters at 3- and 12-month follow-up. Overall complications did not significantly differ. Subgroup analysis in patients < 60 years generally supported these findings, while in patients ≥ 60 years, radiological outcomes aligned, yet only lower DASH scores were observed with VLPs at 3 months (p < 0.001). VLPs may offer superior clinical, functional, and radiological outcomes compared to cast immobilization at 3- and 12-month follow-up for patients < 60 years, with comparable safety profiles. For patients ≥ 60 years, VLPs may yield better radiological outcomes at 3- and 12-month follow-up, though clinical benefits remain uncertain.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142289756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study of contrast-enhanced ultrasound in the evaluation of random-pattern flap blood supply in the early postoperative stage in rats.","authors":"Jian-Xun Ma, You-Chen Xia, Zhi-Yong Bai, Hua-Bin Zhang, Xia Xie","doi":"10.2340/jphs.v59.39975","DOIUrl":"https://doi.org/10.2340/jphs.v59.39975","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to investigate whether contrast-enhanced ultrasound (CEUS) could be used to reveal the status of blood supply of the superficial flap of rat model in the early postoperative stage.</p><p><strong>Methods: </strong>One viable and one ischemic random-pattern flap were prepared on the left and right back of the same rat respectively with a number of 40. CEUS examinations were applied within 12 h and 7 days postoperatively, and the quantitative measurements of microvascular blood volume (BV) of the base and the end of both flaps were expressed using acoustic intensity as a ratio to that of the healthy skin.</p><p><strong>Results: </strong>Within 12 h post operation, there was a smaller BV value of the ischemic ends than that of both the ischemic bases and viable ends (p < 0.001), while no difference was indicated between ischemic bases and viable bases or between viable bases and viable ends. The same result was provided 7 days post operation.</p><p><strong>Conclusion: </strong>Microcirculation of superficial tissues such as random-pattern flaps in this rat model can be assessed quantitatively by CEUS. It could sensitively and accurately reveal the objective status of tissue perfusion in the early postoperative stage.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"102-107"},"PeriodicalIF":1.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142154453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical efficacy of Ni-Ti memory alloy four-corner arthrodesis concentrator in the treatment of scaphoid nonunion advanced collapse: a follow-up of over 10 years.","authors":"Baochuang Qi, Minzheng Guo, Chen Meng, Teng Wang, Chuan Li, Yongqing Xu","doi":"10.2340/jphs.v59.40353","DOIUrl":"https://doi.org/10.2340/jphs.v59.40353","url":null,"abstract":"<p><strong>Purpose: </strong>Exploring the therapeutic effects of Ni-Ti shape memory alloy four-corner arthrodesis concentrator (NT-FCAC) in treating scaphoid nonunion advanced collapse (SNAC) and providing a decade-long follow-up report.</p><p><strong>Materials and methods: </strong>Twenty-six patients with SNAC underwent scaphoidectomy, along with four-corner arthrodesis fusion involving the capitate, lunate, triquetrum, and hamate, using NT-MFCAC. Grip strength was measured using a Jamar dynamometer, while wrist joint mobility was assessed using a goniometer. Preoperative and postoperative assessments were conducted using the Quick Disabilities of the Arm, Shoulder, and Hand (Quick DASH) questionnaire to monitor limb functionality restoration. Pain levels at the wrist joint were evaluated using the visual analog scale (VAS). Postoperative wrist bone fusion status was assessed through anteroposterior and lateral radiographs of the wrist joint.</p><p><strong>Results: </strong>After a 3-month postoperative period, all 26 patients exhibited osseous union at the wrist joint. Over a follow-up spanning 10-15 years, no severe postoperative complications were observed in any patient. Grip strength in the affected side of all patients recovered to 81.96% compared to the healthy side, while wrist joint mobility in the affected side reached over 60% of the healthy side's functionality. VAS scores decreased significantly from 5.85 ± 0.73 preoperatively to 0.19 ± 0.40 at the final follow-up; Quick DASH scores reduced from 69.88 ± 5.12 preoperatively to 6.30 ± 1.25 at final follow-up. Statistically significant differences were noted in VAS and Quick DASH scores for all patients (p < 0.05). However, beyond 60 months postoperatively, subsequent follow-ups did not yield statistically significant differences in VAS and Quick DASH scores for all patients (p > 0.05).</p><p><strong>Conclusions: </strong>Utilizing NT-FCAC for SNAC treated with four-corner arthrodesis fusion results in a high rate of wrist bone fusion, preserving a significant portion of wrist joint function and exhibiting favorable long-term outcomes. This approach is suitable for treating patients with SNAC requiring four-corner arthrodesis fusion.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"95-101"},"PeriodicalIF":1.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of injury area on the success of treatment in digital nerve injury.","authors":"Numan Atilgan","doi":"10.2340/jphs.v59.40519","DOIUrl":"https://doi.org/10.2340/jphs.v59.40519","url":null,"abstract":"<p><strong>Introduction: </strong>The main objective of the current study is to investigate variations in postoperative outcomes that follow digital nerve repair in Zone 1 and Zone 2, respectively. We hope that by carrying out this investigation, we will be able to identify which zone has better sensation recovery and patient-reported outcomes, allowing us to identify the best way of conducting surgery for specific types of injuries.</p><p><strong>Materials and methods: </strong>A retrospective cohort study was conducted in patients with digital nerve injuries treated in a designated hand surgery clinic between January 2021 and December 2023. The study was guided by ethical consideration, where all participants gave their informed consent. Surgical interventions involved primary repair, autograft/allograft nerve grafting, nonsurgical approaches, as well as conduit repair in which results were determined using objective measures and patient feedback.</p><p><strong>Results: </strong>Direct repair emerged superior among injuries of Zone 1 and Zone 2 with high success rates and good patient-reported outcomes. In general, injuries in Zone 1 had better sensory recovery than injuries in Zone 2 and this was associated with higher levels of satisfaction. Comparisons using statistical methods confirmed that direct repair outperformed other modalities.</p><p><strong>Conclusion: </strong>More importantly, the comparison of this study shows that repairs in Zone 1 are more successful than those in Zone 2 revealing direct repair as a superior method for digital nerve injuries. The difference is crucial because it suggests that surgical efficiency may depend on where the injury is. This means that direct repair should be given priority over the two zones, although surgeons will need to watch out for challenges related to Zone 2 injuries and adjust their strategies accordingly to obtain the best patient outcomes possible.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"89-94"},"PeriodicalIF":1.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141759388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Breast volume in non-obese females is related to breast adipose cell hypertrophy, inflammation, and COX2 expression.","authors":"Silvia Gogg, Annika Nerstedt, Ulf Smith, Emma Hansson","doi":"10.2340/jphs.v59.40754","DOIUrl":"10.2340/jphs.v59.40754","url":null,"abstract":"<p><strong>Background: </strong>Breast hypertrophy seems to be a risk factor for breast cancer and the amount and characteristics of breast adipose tissue may play important roles. The main aim of this study was to investigate associations between breast volume in normal weight women and hypertrophic adipose tissue and inflammation.</p><p><strong>Methods: </strong>Fifteen non-obese women undergoing breast reduction surgery were examined. Breast volume was measured with plastic cups and surgery was indicated if the breast was 800 ml or larger according to Swedish guidelines. We isolated adipose cells from the breasts and ambient subcutaneous tissue to measure cell size, cell inflammation and other known markers of risk of developing breast cancer including COX2 gene activation and MAPK, a cell proliferation regulator.</p><p><strong>Results: </strong>Breast adipose cell size was characterized by cell hypertrophy and closely related to breast volume. The breast adipose cells were also characterized by being pro-inflammatory with increased IL-6, IL-8, IL-1β, CCL-2, TNF-a and an increased marker of cell senescence GLB1/β-galactosidase, commonly increased in hypertrophic adipose tissue. The prostaglandin synthetic marker COX2 was also increased in the hypertrophic cells and COX2 has previously been shown to be an important marker of risk of developing breast cancer. Interestingly, the phosphorylation of the proliferation marker MAPK was also increased in the hypertrophic adipose cells.</p><p><strong>Conclusion: </strong>Taken together, these findings show that increased breast volume in non-obese women is associated with adipose cell hypertrophy and dysfunction and characterized by increased inflammation and other markers of increased risk for developing breast cancer.</p><p><strong>Trial registration: </strong>Projektdatabasen FoU i VGR, project number: 249191 (https://www.researchweb.org/is/vgr/project/249191).</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"83-88"},"PeriodicalIF":1.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141534585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proximal row carpectomy versus four-corner arthrodesis: a retrospective comparative study.","authors":"Richard Chan, Justine Goursat, Mathilde Payen, Matthieu Lalevée, Kamel Guelmi","doi":"10.2340/jphs.v59.18338","DOIUrl":"https://doi.org/10.2340/jphs.v59.18338","url":null,"abstract":"<p><strong>Background: </strong>Four-corner arthrodesis with scaphoid excision (FCA) and proximal row carpal resection (PRC) are frequently performed in wrists with post-traumatic Scaphoid Non- Union Advanced Collapse (SNAC)/Scapho-Lunate Advanced Collapse (SLAC) osteoarthritis. The aim of this study was to compare the clinical outcomes of these two procedures.</p><p><strong>Methods: </strong>This single-center, retrospective cohort study included all patients who had PRC or FCA between January 1st, 2009 and January 1st, 2019 and who were followed up. Follow-up included: mobility (radial deviation, ulnar deviation, flexion, extension), strength (grip test, pinch test), function (QuickDash, patient-rated wrist evaluation [PRWE]), subjective mobility, and global satisfaction scores.</p><p><strong>Results: </strong>Among 25 patients included, 11 had PRC and 14 had FCA with a mean follow-up of 69.5 months [12-132]. Radial deviation was 18° versus 14° (p = 0.7), ulnar deviation was 21° versus 22° (p = 0.15), flexion was 39° versus 30° (p = 0.32), extension was 32.5° versus 29.5° (p = 0.09), grip test compared to the controlateral side was 72% versus 62% (p = 0.53), Quick Dash score was 12.5 versus 17.6 (p = 0.84), PRWE was 18.7 versus 17.6 (p = 0.38), subjective mobility was 7.8 versus 7.5 (p = 0.23), and satisfaction score was 8.7 versus 9 (p = 0.76), respectively, in the FCA group and the PRC group. Re-operation rates were 14% patients in the FCA group and 0% in the PRC group.</p><p><strong>Conclusion: </strong>This study found no significant difference between FCA and PRC on strength, mobility, and function in patients with post-traumatic SLAC or SNAC stage II wrist arthritis. Both FCA and PRC seem to be reliable surgical techniques with good outcomes with more revision in the FCA group.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"77-82"},"PeriodicalIF":1.2,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141071268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Autologous fat transplantation prior to permanent expander implant breast reconstruction enhances the outcome after two years: a randomized controlled trial.","authors":"Anna Lindegren, Inkeri Schultz, Åsa Edsander-Nord, Jacinth Yan, Marie Wickman","doi":"10.2340/jphs.v59.18622","DOIUrl":"10.2340/jphs.v59.18622","url":null,"abstract":"<p><p>Radiotherapy is important in breast cancer treatment. A side effect of the treatment is fibrosis that decreases the possibility for a successful breast reconstruction with expanders and with high patient satisfaction with the result. The most common option for mastectomized, irradiated women wishing for a breast reconstruction is autologous tissue transplantation. However, some patients are not suitable for flap surgery. Fifty mastectomized and irradiated women were included in a randomized controlled trial. They underwent breast reconstruction with expanders and were allocated 1:1 to either receive pre-treatment with autologous fat transplantation (AFT) or not. Primary outcomes were frequency of reoperations and complications. Secondary outcomes were number of days in hospital, number of outpatient visits to surgeon or nurse and patient reported outcome as reported with Breast Q. Follow-up time was 2 years. Fifty-two per cent of the intervention group and 68% of the controls underwent reoperations (p = 0.611). Thirty-two per cent of the intervention group and 52% of the controls had complications (p = 0.347). The median number of consultations with the nurse was four in the intervention group and six in the control group (p = 0.002). The AFT patients were significantly more satisfied with their breasts and psychosocial well-being after 2 years. They also had higher increase in satisfaction with breasts, psychosocial well-being, and sexual well-being when comparing baseline with 2 years postoperatively. This randomized controlled trial indicates benefits of AFT prior to breast reconstruction with expanders, especially on patient reported outcome even if the study sample is small.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"65-71"},"PeriodicalIF":1.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141071338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limited debridement combined with ReCell® Techniques for deep second-degree burns.","authors":"Yue Zhang, Kai Guo, Chenyang Tian, Ling Tong, Dahai Hu, Yunchuan Wang","doi":"10.2340/jphs.v59.24557","DOIUrl":"https://doi.org/10.2340/jphs.v59.24557","url":null,"abstract":"<p><strong>Background: </strong>The purpose of this article is to introduce a method that combines limited debridement and ReCell® autologous cell regeneration techniques for the treatment of deep second-degree burn wounds.</p><p><strong>Method: </strong>A total of 20 patients suffered with deep second-degree burns less than 10% of total body surface area (TBSA) who were admitted to our department, from June 2019 to June 2021, participated in this study. These patients first underwent limited debridement with an electric/pneumatic dermatome, followed by the ReCell® technique for secondary wounds. Routine treatment was applied to prevent scarring after the wound healed. Clinical outcomes were scored using the Vancouver Scar Scale (VSS).</p><p><strong>Results: </strong>All wounds of the patients healed completely. One patient developed an infection in the skin graft area and finally recovered by routine dressing changes. The average healing time was 12 days (range: 10-15 days). The new skin in the treated area was soft and matched the colour of the surrounding normal skin and the VSS score ranged from 3~5 for each patient. Of the 20 patients, 19 were very satisfied and 1 was satisfied.</p><p><strong>Conclusions: </strong>This article reports a useful treatment method that combines electric dermatome-dependent limited debridement and the ReCell® technique for the treatment of deep second-degree burn wounds. It is a feasible and effective strategy that is easy to implement and minimally invasive, and it is associated with a short healing time, mild scar formation and little damage to the donor skin area.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"72-76"},"PeriodicalIF":1.2,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141071341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A systematic review of randomised controlled trials in breast reconstruction.","authors":"Emma Hansson, Camilla Larsson, Alexandra Uusimäki, Karolina Svensson, Emmelie Widmark Jensen, Anna Paganini","doi":"10.2340/jphs.v59.40087","DOIUrl":"10.2340/jphs.v59.40087","url":null,"abstract":"<p><strong>Background: </strong>For preference sensitive treatments, such as breast reconstructions, there are barriers to conducting randomised controlled trials (RCTs). The primary aims of this systematic review were to investigate what type of research questions are explored by RCTs in breast reconstruction, where have they been performed and where have they been published, and to thematise the research questions and thus create an overview of the state of the research field.</p><p><strong>Methods: </strong>Randomised controlled trials investigating any aspect of breast reconstructions were included. The PubMed database was searched with a pre-defined search string. Inclusion and data abstraction was performed in a pre-defined standardised fashion. For the purpose of this study, we defined key issues as comparison of categories of breast reconstruction and comparison of immediate and delayed breast reconstruction, when the thematisation was done.</p><p><strong>Results: </strong>A total of 419 abstracts were retrieved from the search. Of the 419, 310 were excluded as they were not RCTs concerning some aspect of breast reconstruction, which left us with 110 abstracts to be included in the study. The research questions of the included studies could more or less be divided into seven different themes inclusive of 2 key issues: Other issues - comparison of different categories of breast reconstruction, comparison of immediate and delayed breast reconstruction, surgical details within a category of breast reconstruction, surgical details valid for several categories of breast reconstruction, donor site management, anaesthetics, and non-surgical details. Only five studies compared key issues, and they all illustrate the challenges with RCTs in breast reconstruction.</p><p><strong>Conclusions: </strong>A total of 110 publications based on RCTs in breast reconstruction have been published. Seven themes of research questions could be identified. Only five studies have explored the key issues. Better scientific evidence is needed for the key issues in breast reconstruction, for example by implementing a new study design in the field.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"53-64"},"PeriodicalIF":1.2,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140945143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving standard volar plate fixation in 3D-guided corrective osteotomy of the distal radius: evaluation of a shim instrument.","authors":"Emilia Gryska, Katleen Libberecht, Charlotte Stor Swinkels, Peter Axelsson, Per Fredrikson, Anders Björkman","doi":"10.2340/jphs.v59.39839","DOIUrl":"https://doi.org/10.2340/jphs.v59.39839","url":null,"abstract":"<p><p>Standard volar plates often do not fit the surface of the malunited distal radius after osteotomy, necessitating an offset angle for accurate volar tilt correction. The correction can be achieved if the plate is held at the correct angle when the distal screws are locked. With the advantage of 3D surgical planning and patient-specific instruments, we developed a shim instrument to assist the surgeon in securing the plate at the intended angle when locking the distal screws, and evaluated radiological results. Five female patients aged 63-74 with dorsally angulated extra-articular malunions underwent surgery using 3D-printed guides and the shim instrument. The plate position, drilling guide alignment, screw placements, and distal radius correction on postoperative CTs were compared with the surgical plans. Errors were measured using an anatomical coordinate system, and standard 2D radiographic measures were extracted. Preoperative dorsal tilt ranged from 16° to 35°, and postoperative volar tilt from 1° to 11°. 3D analysis revealed mean absolute correction errors of 6.1° in volar tilt, 1.6° in radial inclination, and 0.6 mm in ulnar variance. The volar tilt error due to the shim instrument, indicated by the mean angle error of the distal screws to the plate, was 2.1° but varied across the five patients. Settling of the distal radius, due to tension during and after reduction, further contributed to a mean loss of 3.5° in volar tilt. The shim instrument helped with securing plates at the intended angle; however, further correction improvements should consider the tension between the fragments of osteoporotic bone.</p>","PeriodicalId":16847,"journal":{"name":"Journal of Plastic Surgery and Hand Surgery","volume":"59 ","pages":"46-52"},"PeriodicalIF":1.2,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140922588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}