Veterinary Surgery最新文献

{"title":"Post-surgical outcome and recurrence rates in thoracolumbar arachnoid diverticula undergoing durotomy alone or alongside a modified technique of subdural shunt-placement in dogs.","authors":"Sergio A Gomes, Mike Targett, Thomas Mignan, Sara Longo, Matthew James, Kimberley Stee, Hana Gunovska, Duarte Costa, Joana Diogo, Imogen Schofield, Mark Lowrie","doi":"10.1111/vsu.14236","DOIUrl":"https://doi.org/10.1111/vsu.14236","url":null,"abstract":"<p><strong>Objective: </strong>The aims of this study were two-fold. First, to describe a modified technique of subdural shunt (SDS) placement for canine thoracolumbar arachnoid diverticula (TL-AD). Second, to compare outcome and recurrence of dogs following durotomy and debridement of meningeal attachments alone or in combination with SDS.</p><p><strong>Animals: </strong>A total of 27 surgically managed TL-AD affected dogs.</p><p><strong>Study design: </strong>Retrospective non-randomized descriptive case series.</p><p><strong>Methods: </strong>Magnetic resonance imaging (MRI) TL-AD diagnosed dogs undergoing surgery, with 4-8 weeks postoperative recheck and follow-up time of >6 months. Two groups were compared: a control group, where durotomy and debridement of subdural adhesions alone was performed; a shunting group (SG) where SDS was utilized. The surgical technique was adapted from Meren et al., differing in access (hemilaminectomy), incision shape (longitudinal) and no suturing of the SDS or dura.</p><p><strong>Results: </strong>A total of 12 dogs were included in the control group and 14 in the SG. One case, excluded, developed suspected postoperative surgical infection that resolved when the SDS was removed. Immediate postoperative and short-term outcome was not significantly different between groups. In the SG, long-term outcome was significantly better with dogs having improved neurologically (85.7% vs. 41.7%), and the rate of recurrence was lower (14.3% vs. 41.7%) although this last difference was not statistically significant (p = .19). Recurrence occurred at a median of 36 months from surgery (9-62), 5/7 recurrent cases were Pugs.</p><p><strong>Conclusion: </strong>The adapted technique was successful in addressing TL-AD associated neurological signs in the long-term, as well as reducing recurrence of TL-AD.</p><p><strong>Clinical significance: </strong>Shunt-placement appears to have a positive role in outcome and possibly recurrence prevention in cases of TL-AD.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143524734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of heated pneumoperitoneum on body temperature in dogs undergoing laparoscopic ovariectomy-A randomized controlled trial.","authors":"Regiane F Ferreira, José A Damasceno-Ferreira, Paulo C A R da Silva, Edmundo J Abílio, Diogo Benchimol de Souza","doi":"10.1111/vsu.14230","DOIUrl":"https://doi.org/10.1111/vsu.14230","url":null,"abstract":"<p><strong>Objective: </strong>To compare the temperatures of dogs undergoing laparoscopic ovariectomy with insufflation using heated or nonheated CO₂.</p><p><strong>Study design: </strong>Randomized controlled trial.</p><p><strong>Animals: </strong>Fifteen female dogs undergoing laparoscopic ovariectomy.</p><p><strong>Methods: </strong>The animals were randomly distributed into groups: NH-insufflated with nonheated CO₂ (n = 8), or H-insufflated with 36.5°C heated CO₂ (n = 7). Body weight, anesthetic time, surgical time, insufflation time, initial esophageal temperature, and final temperature were compared.</p><p><strong>Results: </strong>All animals completed the study and recovered well from the surgery. The groups had similar values for body weight, age, initial temperature, and anesthetic, surgical, and insufflation times. The final temperature of the H group was 1.1°C higher than the NH group (p = .0026). In the NH group, correlations between final temperature and anesthetic time (p = .016), surgical time (p = .011), and insufflation time (p = .033) were observed. For the H group, no correlations among these parameters were identified.</p><p><strong>Conclusion: </strong>Carbon dioxide insufflation ameriorated the temperature reduction during laparoscopic ovariectomy in dogs.</p><p><strong>Clinical significance: </strong>The results can be applied directly to prevent hypothermia during laparoscopic procedures in dogs.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143493768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of suture anchor type, eyelet configuration, and loading condition on suture failure: An in vitro study.","authors":"Obinna P Fidelis, Pierre-Yves Mulon, David E Anderson, Dustin L Crouch","doi":"10.1111/vsu.14231","DOIUrl":"https://doi.org/10.1111/vsu.14231","url":null,"abstract":"<p><strong>Objective: </strong>To determine the effect of suture anchor type, eyelet configuration (raised or embedded), and loading condition (without or with cyclic loading) on failure load and failure mode of sutures in anchors with embedded and raised eyelets.</p><p><strong>Study design: </strong>Controlled laboratory study.</p><p><strong>Sample population: </strong>A total of 4 unique clinical anchor+suture combinations (n = 40 total); eyebolt screw reference samples (n = 30 total).</p><p><strong>Methods: </strong>A total of 10 samples of each anchor+suture combination were either (a) loaded to failure (n = 5) or (b) loaded from 0 N to 60 N for 1000 cycles then loaded to failure (n = 5). As a \"best-case\" reference, an eyebolt screw with a smooth, round cross-section was tested under the same two loading conditions and the same sutures (n = 10 per suture) used with the clinical anchors. The percent difference in the maximum load at failure ( <math> <semantics><mrow><mo>%</mo> <mo>∆</mo> <msub><mi>F</mi> <mi>max</mi></msub> </mrow> <annotation>$$ %Delta {F}_{mathrm{max}} $$</annotation></semantics> </math> ) between each anchor and suture-matched eyebolt screw was used to quantify the effect of each anchor on suture strength.</p><p><strong>Results: </strong>There was no effect of loading condition (i.e., without or with cyclic loading) on F_max. The Anika anchor had a significantly lower <math> <semantics><mrow><mo>%</mo> <mo>∆</mo> <msub><mi>F</mi> <mi>max</mi></msub> </mrow> <annotation>$$ %Delta {F}_{mathrm{max}} $$</annotation></semantics> </math> than the Arthrex anchor (p = .015), IMEX anchor (p = .004) and Jorvet anchor (p < .001). A total of 14 out of 20 samples of anchors with raised eyelets failed at the suture mid-section, whereas all 20 samples of anchors with embedded eyelets failed at the suture knot.</p><p><strong>Conclusion: </strong>Anchors with raised eyelets had more failures at the suture mid-section indicative of wear and/or cutting of the suture against the eyelet.</p><p><strong>Clinical significance: </strong>Eyelet geometry and surface finish of metallic screw-type anchors have effects on suture strength.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successful venotomy for portal tumor thrombus removal due to pancreatic carcinoma in a dog.","authors":"Beatrice Hertel, Elisa Bortolami, Tommaso Furlanello, Giovanna Bertolini, Filippo Cinti","doi":"10.1111/vsu.14225","DOIUrl":"https://doi.org/10.1111/vsu.14225","url":null,"abstract":"<p><strong>Objective: </strong>To describe a portal venotomy technique and outcome for tumoral thrombus removal in a dog with insulinoma invading the portal vein.</p><p><strong>Study design: </strong>Case report.</p><p><strong>Animals: </strong>A 9-year-old entire male West Highland White Terrier.</p><p><strong>Methods: </strong>The dog was referred for further investigation of recurrent collapsing episodes and weakness. An abdominal ultrasound revealed a pancreatic mass. Biochemical tests were consistent with insulinoma. A dynamic (4D) contrast-enhanced computed tomography (CT) perfusion study showed a large pancreatic mass originating from the left lobe of the pancreas invading both the portal and splenic veins directly. The portal vein was 80% occluded between the gastroduodenal and splenic vein entry points. The dog underwent partial pancreatectomy, splenectomy, and portal venotomy. Following identification of the thrombus by direct visualization and palpation, Rummel tourniquets were used to isolate the segment of the portal vein, and portal venotomy was performed over the thrombus. The venotomy was repaired with primary closure. Intraoperative hemorrhage was absent following the release of the vascular isolation.</p><p><strong>Results: </strong>Histopathology was consistent with insulinoma. The dog was discharged 4 days after surgery. Short-term follow up revealed an absence of postoperative complications. The dog was started on adjuvant therapy, and the re-examination 3 months after surgery showed an absence of the clinical signs and a good quality of life. One year after surgery, the dog is still alive with confirmed metastatic disease.</p><p><strong>Conclusion: </strong>Portal venotomy was successful for thrombus removal and this dog tolerated temporary occlusion of the portal vein well. Careful preoperative CT planning is crucial for good surgical outcomes.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143365083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A randomized comparison of an adhesive gelatin sponge and a plain collagen sponge for hemostatic control during canine liver surgery.","authors":"Thomas S Anderson, Rachel D Hattersley, Jackie L Demetriou","doi":"10.1111/vsu.14160","DOIUrl":"10.1111/vsu.14160","url":null,"abstract":"<p><strong>Objective: </strong>To compare the effectiveness of a modified surface gelatin sponge to a plain collagen sponge for hemostasis of parenchymal hepatic bleeding.</p><p><strong>Study design: </strong>Prospective, randomized trial of two hemostatic agents.</p><p><strong>Animals: </strong>A total of 45 dogs undergoing elective liver surgery were randomly allocated into two groups: 22 in the adhesive gelatin (AG) group and 23 in the plain collagen (PC) group. A total of 20 patients per group underwent liver biopsy to create a uniformly sized bleeding surface, with the remaining patients (AG = 2, PC = 3) undergoing liver lobectomy.</p><p><strong>Methods: </strong>Evaluation of hemostatic effectiveness and tissue adhesion of each sponge type was performed by the operating surgeon using structured scoring systems. Hemostatic parameters were primarily evaluated at the liver biopsy site to maintain homogeneity of bleeding surface size.</p><p><strong>Results: </strong>For the liver biopsy group (n = 40), 5 min after hemostatic sponge application, 10/20 dogs were bleeding in the PC group, compared to 2/20 in AG group (p = .0138). The PC bleeding was significantly higher than AG across the 3 to 6 min evaluation period (p < .001). When surgeons tested the adhesion of the sponge across the whole cohort (n = 45), AG scored 2 (of 3) against 1 for PC (p < .001). In group PC, 5/23 sponges dislodged during abdominal lavage and preparations for closure and had to be replaced due to recurrence of bleeding, compared with no AG sponges dislodging (p = .042). There were no further complications related to the use of either sponge.</p><p><strong>Conclusion: </strong>In the dogs with hepatic parenchymal incision, use of an adhesive gelatin sponge improved intraoperative attachment and haemostatic effectiveness, compared to a collagen sponge.</p><p><strong>Clinical significance: </strong>Based on our clinical experience in these cases, adhesive gelatin sponges could be considered an effective option when selecting a hemostatic agent for liver surgery in dogs.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":"345-353"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11830848/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142393751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of a two-stage rumen cannulation on the health and rumen function of six lactating dairy cows.","authors":"Thomas Hartinger, Laura Beissel, Ezequias Castillo-Lopez, Thomas Wittek, Johann Huber, Qendrim Zebeli","doi":"10.1111/vsu.14182","DOIUrl":"10.1111/vsu.14182","url":null,"abstract":"<p><strong>Objective: </strong>To determine the impact of a two-stage rumen cannulation on the health and rumen function of lactating dairy cows.</p><p><strong>Study design: </strong>Experimental study.</p><p><strong>Animals: </strong>Six lactating Holstein cows.</p><p><strong>Methods: </strong>We performed a two-stage rumen cannulation in six Holstein cows that were 49 ± 11 days in milk. The following clinical health parameters and digestion-associated variables were analyzed on seven measurement days, from before the first surgery until 28 days after the second surgery: body temperature, heart rate, respiratory rate, pain score, rumen fill score, fecal score, wet sieving, auscultation and palpation of the rumen, bodyweight, body condition score, and activity.</p><p><strong>Results: </strong>The pain score of the cows was constantly zero. Similarly, the body temperature and respiratory rate remained within physiological ranges, whereas the heart rate was slightly higher immediately after the second surgery. No differences were observed in rumen fill (2.00-2.67; p = .10) and fecal consistency scores (2.17-2.67; p = .42). The fecal particle size distribution showed negligible differences. The cows lost approximately 43 kg of bodyweight during the experiment (p < .01), which was reflected in a 0.5-point body condition score loss (p < .01).</p><p><strong>Conclusion: </strong>A temporary minimal negative effect of a two-stage rumenostomy on the health and body condition of early lactating Holstein cows was observed, whereas digestion was unaffected. Considering the limited sample size, further studies are required to substantiate these findings.</p><p><strong>Clinical significance: </strong>Given that animals are appropriately medically managed, experimental rumenostomy of lactating dairy cows may not compromise their health or rumen function.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":"389-397"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11830858/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified closed sacculectomy in 50 dogs with non-neoplastic anal sac disease.","authors":"Allyson T Davis, Giselle L Hosgood","doi":"10.1111/vsu.14168","DOIUrl":"10.1111/vsu.14168","url":null,"abstract":"<p><strong>Objective: </strong>To describe a modified closed sacculectomy technique for non-neoplastic anal sac disease in dogs, and to describe the management and short-term outcomes in dogs undergoing sacculectomy by the described technique.</p><p><strong>Study design: </strong>Retrospective case series.</p><p><strong>Sample population: </strong>A total of 50 dogs.</p><p><strong>Methods: </strong>Electronic medical records were reviewed to identify dogs undergoing bilateral anal sacculectomy for non-neoplastic anal sac disease using the described closed technique between January 1, 2013 and February 1, 2024.</p><p><strong>Results: </strong>A total of 50 dogs underwent bilateral anal sacculectomy for non-neoplastic anal sac disease. Intraoperative anal sac perforation was reported in five dogs (10%). A total of 43 dogs were available for two-week follow-up. Grade 1 complications were reported in 14/43 dogs (32%), grade 2 complications in 2/43 dogs (5%), and grade 3B in 2/43 dogs (5%). At two-weeks postoperatively, 13/14 dogs (93%) had resolution of grade 1 complications. Both dogs with grade 2 complications had resolution reported at two weeks postoperatively, and both dogs with grade 3B complications had resolution reported at two weeks following revision surgery.</p><p><strong>Conclusion: </strong>Intraoperative complications consisted of anal sac perforation without further complication. Minor postoperative complications were mostly self-limiting, supporting previous literature. Major complications were infrequent and resolved following single revision surgery.</p><p><strong>Clinical significance: </strong>The technique reported provides an alternative to excise intact and non-neoplastic anal sacs in dogs. The key features of this technique are immediate anal sac identification by following the anatomic path of the duct, minimal peri-saccular dissection, no requirement for packing of the anal sac, and complete removal of the duct and anal sac.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":"382-388"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11830859/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of cannulated screws in the treatment of unicondylar humeral condylar fractures in dogs.","authors":"MacKenzie A Whyte, Sean M Murphy, Wade W Won, Hsin-Yi Weng, Sarah Malek","doi":"10.1111/vsu.14156","DOIUrl":"10.1111/vsu.14156","url":null,"abstract":"<p><strong>Objective: </strong>To describe unicondylar humeral fracture (UHF) repair using cannulated transcondylar screws, report postoperative fracture reduction, healing, and complication rates.</p><p><strong>Study design: </strong>Retrospective.</p><p><strong>Animals: </strong>A total of 49 client owned dogs with UHF.</p><p><strong>Methods: </strong>Surgical technique and approach (i.e., open, limited open, or minimally invasive) were recorded. Articular step defect (ASD) and gap (Gap) at the humeral condylar articular surface were measured on pre- and postoperative images and reported as percentages. Fracture healing was graded on follow-up radiographs. Functional outcome was based on client questionnaire over the phone. General linear models were used to assess the impact of surgical approach on %ASD, %Gap, whereas Cox regression was used to assess prognostic factors of full fracture healing.</p><p><strong>Results: </strong>A total of 49 fractures repaired with a transcondylar screw with or without an antirotational pin(s) were included. Surgical approach did not have an impact on postoperative %ASD, %Gap or development of complications. The overall complication rate was 26% (11/42), with no revision surgery necessary. Of the dogs that encountered complications, 50% required pin and/or screw removal after fracture healing. For 29 dogs with a minimum of four-month owner telephone questionnaire follow-up, 90% reported no lameness and only three reported intermittent lameness. Achieving complete fracture healing was affected by increased postoperative %ASD (p = .033).</p><p><strong>Conclusion: </strong>The UHFs repaired by transcondylar cannulated screws had acceptable outcomes and fracture reduction with complication rates being similar regardless of the surgical approach.</p><p><strong>Clinical significance: </strong>Cannulated screws can be implanted with varying surgical approaches to successfully repair UHFs with comparable clinical outcome to previous reports.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":"334-344"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11830856/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142018753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radical surgical excision of extensive perianal melanomas on standing horses: Twenty cases.","authors":"Mickaël P Robert, Camille Buyck, Cyril Tricaud, Matthieu Cousty, Raymond Pujol","doi":"10.1111/vsu.14192","DOIUrl":"10.1111/vsu.14192","url":null,"abstract":"<p><strong>Objective: </strong>To report a radical surgical technique for perianal melanomas involving the anal margin in standing horses.</p><p><strong>Study design: </strong>Observational retrospective study.</p><p><strong>Sample population: </strong>Twenty client-owned horses presented for surgical excision of extensive (≥4 cm) perianal melanomas.</p><p><strong>Methods: </strong>Demographic data, surgical technique, intraoperative, immediate- and late-postoperative complications were reviewed.</p><p><strong>Results: </strong>All horses (median age 15, Q1-Q3 12 to 17.3 years) were operated under standing sedation and epidural anesthesia. Median hospitalization period was 6.5 days (Q1-Q3 5 to 8.3 days). The anal margin was fully resected in 14 cases. A deep perirectal dissection was performed in 16 cases. Eight cases required additional local anesthetics. One case bled profusely during and after the procedure. One case became recumbent during the procedure, showed intense postoperative pain, and was eventually euthanized 6 weeks later because of ataxia. During hospitalization, one horse displayed colic signs and 10 others required manual evacuation of the rectum because of decreased fecal output. Complications after hospital discharge included mild colic signs (n = 4), partial wound dehiscence (n = 1) and hypergranulation of the wound (n = 2). All other cases healed without complications in 6 to 12 weeks. Median follow-up period was 11.8 months (Q1-Q3 6.3 to 27.2 months). Six horses developed new melanomas with only one in the perianal region.</p><p><strong>Conclusion: </strong>This technique of surgical excision of extensive perianal melanomas was efficiently performed on standing horses with minimal local recurrence. This procedure led to high client satisfaction. Early postoperative pain was commonly encountered. Owners should be warned of the potentially large surgical wound that will be created.</p><p><strong>Clinical significance: </strong>This technique allowed for removal of large perianal melanomas with limited recurrence during the long term follow up and may improve the quality of life of affected horses.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":"373-381"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of thread direction on rotational stability in lag-screw fixation of sacroiliac luxation: An ex vivo cadaveric study in small-breed dogs.","authors":"SeungPyo Bae, YoungJin Jeon, Haebeom Lee, Jaemin Jeong","doi":"10.1111/vsu.14188","DOIUrl":"10.1111/vsu.14188","url":null,"abstract":"<p><strong>Objective: </strong>To assess the effect of screw thread direction on rotational resistance in canine sacroiliac (SI) luxation models using left- and right-handed screws.</p><p><strong>Study design: </strong>Controlled laboratory study.</p><p><strong>Sample population: </strong>Twenty-four adult canine pelves with proximal femora were examined.</p><p><strong>Methods: </strong>Four groups (n = 6 each) were established: right-handed screw/right SI luxation (RhRSI), right-handed screw/left SI luxation (RhLSI), left-handed screw/left SI luxation (LhLSI), and left-handed screw/right SI luxation (LhRSI). Under fluoroscopy, 2.4 mm cortical screws were placed into the SI joint in a lag fashion. An acute failure test measured force and torque at yield and peak points, with the ilium and femur positioned at a 108° angle and displacement at 0.099 cm/s. Torque (N cm) was calculated from force (N) and the moment arm (cm).</p><p><strong>Results: </strong>Differences in median torque were found at yield and peak points. RhRSI gave 50.08 N cm versus 16.01 N cm for RhLSI (p < .01), and LhLSI showed 39.42 N cm versus 19.93 N cm for LhRSI (p < .03). At peak, RhRSI recorded 67.55 N cm compared to 28.14 N cm for RhLSI (p < .01), and LhLSI reached 51.79 N cm versus 28.28 N cm for LhRSI (p < .05). All samples failed by rotation without screw breakage or fractures.</p><p><strong>Conclusion: </strong>Right-handed screws provided greater rotational resistance in right-sided luxation, and left-handed screws in left-sided luxation, which demonstrated that screw thread direction influenced fixation stability in SI luxation.</p><p><strong>Clinical significance: </strong>The findings suggest that selecting screw thread direction can enhance biomechanical stability in SI luxation repair, improving surgical outcomes for affected dogs.</p>","PeriodicalId":23667,"journal":{"name":"Veterinary Surgery","volume":" ","pages":"311-320"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11830857/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142628048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}