{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,21]],"date-time":"2026-03-21T23:07:19Z","timestamp":1774134439630,"version":"3.50.1"},"reference-count":33,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,6,22]],"date-time":"2022-06-22T00:00:00Z","timestamp":1655856000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Sciences"],"abstract":"<jats:p>The aim of this study is to report the results and to review the outcome of 14 cases of Y-T humeral fractures repair using paired polyaxial locking system (PAX) plates through a combined medial and lateral approach. Fourteen consecutive dogs, with traumatic humeral Y-T fractures, met the inclusion criteria. This study includes signalment, preoperative radiographs, type of implants, radiographic bone healing assessment, complications, range of motion (ROM) of the elbow and limb function evaluated at 120 days after surgery. Postoperative radiographs revealed adequate anatomic reconstruction, and in all cases, bone healing has been achieved. No implant failure was observed. Functional outcome was excellent in 7 dogs (no lameness and preserved ROM), good in 4 (slight lameness and moderate ROM reduction) and discrete in 2 (mild lameness and severe ROM reduction). Complications were encountered in 2\/14 patients with implant-associated infection resolved after long-term antibiotic treatment and implant removal. The PAX system is shown to be a valid alternative for the treatment of Y-T humeral fractures, offering the benefit of polyaxial insertion of locking screws. The possibility of angle locking screws is helpful in the distal humeral bicondylar fractures, providing additional options for screw placement in juxtarticular fractures, avoiding fracture lines or other implants.<\/jats:p>","DOI":"10.3390\/vetsci9070310","type":"journal-article","created":{"date-parts":[[2022,6,23]],"date-time":"2022-06-23T01:59:47Z","timestamp":1655949587000},"page":"310","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Treatment of Y-T Humeral Fractures with Polyaxial Locking Plate System (PAX) in 14 Dogs"],"prefix":"10.3390","volume":"9","author":[{"given":"Filippo","family":"Martini","sequence":"first","affiliation":[{"name":"Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paolo","family":"Boschi","sequence":"additional","affiliation":[{"name":"Ortovet stp s.r.l., Piazza Alessandrini 2\/D, 43036 Fidenza, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2359-7105","authenticated-orcid":false,"given":"Filippo","family":"Lusetti","sequence":"additional","affiliation":[{"name":"Ortovet stp s.r.l., Piazza Alessandrini 2\/D, 43036 Fidenza, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chadi","family":"Eid","sequence":"additional","affiliation":[{"name":"Ortovet stp s.r.l., Piazza Alessandrini 2\/D, 43036 Fidenza, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrea","family":"Bonardi","sequence":"additional","affiliation":[{"name":"Ortovet stp s.r.l., Piazza Alessandrini 2\/D, 43036 Fidenza, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"374","DOI":"10.1111\/jsap.13144","article-title":"Effect of breed as a risk factor for humeral condylar fracture in skeletally immature dogs","volume":"61","author":"Smith","year":"2020","journal-title":"J. Small Anim. Pract."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"492","DOI":"10.3415\/VCOT-09-04-0041","article-title":"Repair of Y-T humeral fractures in the dog using paired \u2018String of Pearls\u2019 locking plates","volume":"22","author":"Ness","year":"2009","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1111\/j.1748-5827.2005.tb00313.x","article-title":"Bilateral fixation of Y-T humeral condyle fractures via medial and lateral approaches in 29 dogs","volume":"46","author":"Mckee","year":"2005","journal-title":"J. Small Anim. Pract."},{"key":"ref_4","first-page":"O34","article-title":"Minimally invasive percutaneous medial plate rod osteosynthesis for treatment of bicondylar humeral fractures in dogs: Surgical technique and case report","volume":"48","author":"Guiot","year":"2018","journal-title":"Vet. Surg."},{"key":"ref_5","first-page":"820","article-title":"Fractures of the humerus","volume":"Volume 1","author":"Johnston","year":"2018","journal-title":"Veterinary Surgery: Small Animal"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1111\/j.1748-5827.2006.00026.x","article-title":"Y-T humeral fractures with supracondylar comminution in five cats","volume":"47","author":"Macias","year":"2006","journal-title":"J. Small Anim. Pract."},{"key":"ref_7","first-page":"149","article-title":"The Forelimb","volume":"Volume 1","author":"Piermattei","year":"2004","journal-title":"An Atlas of Surgical Approaches to the Bones and Joints of the Dog and Cat"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1055\/s-0039-1691825","article-title":"Repair of Y-T Humeral Condyle Fractures with LockingCompression Plate Fixation","volume":"32","author":"Moffatt","year":"2019","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1183","DOI":"10.1111\/vsu.13429","article-title":"Bilateral locking compression plate and transcondylar screw fixation for stabilization of canine bicondylar humeral fractures","volume":"49","author":"Yeadon","year":"2020","journal-title":"Vet. Surg."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"186","DOI":"10.3415\/VCOT-12-03-0043","article-title":"The effect of screw angulation and insertion torque on the push-out strength of polyaxial locking screws and the single cycle to failure in ben- ding of polyaxial locking plates","volume":"26","author":"Bufkin","year":"2013","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"172","DOI":"10.3415\/VCOT-16-07-0111","article-title":"Single cycle to failure in bending of three titanium polyaxial locking plates","volume":"30","author":"Eid","year":"2017","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1111\/j.1532-950X.2012.01063.x","article-title":"Fracture Repair Using a Polyaxial Locking Plate System (PAX)","volume":"42","author":"Barnhart","year":"2013","journal-title":"Vet. Surg."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"2312","DOI":"10.1007\/s11999-013-2919-5","article-title":"Material and biofilm load of k wires in toe surgery: Titanium versus stainless steel","volume":"471","author":"Clauss","year":"2013","journal-title":"Clin. Orthop. Relat. Res."},{"key":"ref_14","unstructured":"Securos (2012, February 27). PAX Advanced Locking System. Available online: http:\/\/www.securos.com\/Portals\/7\/prod_instr\/templates\/PAX-USA-manual.pdf."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1097\/00005131-200409000-00002","article-title":"Locked internal fixator: Sensitivity of screw\/plate stability to the correct insertion angle of the screw","volume":"18","author":"Frenk","year":"2004","journal-title":"J. Orthop. Trauma"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"186","DOI":"10.3415\/VCOT-13-10-0133","article-title":"A biomechanical comparison of unilateral and bilateral String-of- Pearls locking platesTM in a canine distal humeral metaphyseal gap model","volume":"27","author":"Hurt","year":"2014","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"905","DOI":"10.1111\/j.1532-950X.2010.00763.x","article-title":"Proposed definitions and criteria for reporting time frame, outcome, and complications for clinical orthopedic studies in veterinary medicine","volume":"39","author":"Cook","year":"2010","journal-title":"Vet. Surg."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1016\/j.cvsm.2020.12.006","article-title":"Humeral intracondylar fissure in dogs","volume":"51","author":"Moores","year":"2021","journal-title":"Vet. Clin. N. Am. Small Anim. Pract."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"744","DOI":"10.2460\/javma.241.6.744","article-title":"Assessment of fracture healing after minimally invasive plate osteosynthesis or open reduction and internal fixation of coexisting radius and ulna fractures in dogs via ultrasonography and radiography","volume":"41","author":"Pozzi","year":"2012","journal-title":"J. Am. Vet. Med. Assoc."},{"key":"ref_20","first-page":"722038","article-title":"The Effects of Prophylactic Dexmedetomidine Administration on General Anesthesia Recovery Quality in Healthy Dogs Anesthetized With Sevoflurane and a Fentanyl Constant Rate Infusion Undergoing Elective Orthopedic Procedures","volume":"8","author":"Jarosinski","year":"2021","journal-title":"Vet. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"314","DOI":"10.1111\/j.1532-950X.2004.04046.x","article-title":"Evaluation of surgical repair of humeral condylar fractures using self-compressing orthofix pins in 23 dogs","volume":"33","author":"Guille","year":"2004","journal-title":"Vet. Surg."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1055\/s-0038-1632755","article-title":"Frequency of post-traumatic osteoarthritis in dogs after repair of a humeral condylar fracture","volume":"16","author":"Gordon","year":"2003","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1111\/j.1532-950X.2008.00496.x","article-title":"Rehabilitation therapy for elbow disorders in dogs","volume":"38","author":"Canapp","year":"2009","journal-title":"Vet. Surg."},{"key":"ref_24","first-page":"16","article-title":"Approccio Diagnostico","volume":"Volume 1","author":"Martini","year":"2006","journal-title":"Patologie Articolari Nel Cane E Nel Gatto"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"337","DOI":"10.1111\/jsap.12670","article-title":"The natural history of humeral intra- condylar fissure: An observational study of 30 dogs","volume":"58","author":"Moores","year":"2017","journal-title":"J. Small Anim. Pract."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1055\/s-0039-1698415","article-title":"Mechanical Performance of a Polyaxial Locking Plate and the Influence of Screw Angulation in a Fracture Gap Model","volume":"33","author":"Kaczmarek","year":"2020","journal-title":"Vet. Comp. Orthop. Traumatol."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1111\/j.1532-950X.1986.tb00172.x","article-title":"Medial plating for the repair of middle and distal diaphyseal fractures of the humerus in dogs","volume":"15","author":"Harari","year":"1986","journal-title":"Vet. Surg."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Reish, T., Cemenzind, R.S., Fuhrer, R., Riede, U., and Helmy, N. (2019). The first 100 patients treated with a new anatomical pre-contoured locking plate for clavicular midshaft fractures. BMC Muscoloskelet. Disord., 20.","DOI":"10.1186\/s12891-018-2396-9"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1055\/s-0030-1268520","article-title":"Experience with the use of prebent plates for the reconstruction of mandibular defects","volume":"3","author":"Salgueiro","year":"2010","journal-title":"Craniomaxillofac. Trauma Reconstr."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"B63","DOI":"10.1016\/j.injury.2003.09.026","article-title":"Guidelines for the clinical application of the LCP","volume":"34","author":"Gautier","year":"2003","journal-title":"Injury"},{"key":"ref_31","first-page":"207","article-title":"Locking plates in distal humerus fractures: Study of 43 patients","volume":"16","author":"Gupta","year":"2013","journal-title":"Chin. J. Traumatol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"705","DOI":"10.1111\/j.1532-950X.2012.00971.x","article-title":"Implant removal rate from infection after tibial plateau leveling osteotomy in dogs","volume":"41","author":"Gallagher","year":"2012","journal-title":"Vet. Surg."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"327","DOI":"10.1016\/j.jclinepi.2014.06.020","article-title":"Subjective and objective outcomes in randomized clinical trials: Definitions differed in methods publications and were often absent from trial reports","volume":"67","author":"Moustgaard","year":"2014","journal-title":"J. Clin. Epidemiol."}],"container-title":["Veterinary Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2306-7381\/9\/7\/310\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:37:16Z","timestamp":1760139436000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2306-7381\/9\/7\/310"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,6,22]]},"references-count":33,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2022,7]]}},"alternative-id":["vetsci9070310"],"URL":"https:\/\/doi.org\/10.3390\/vetsci9070310","relation":{},"ISSN":["2306-7381"],"issn-type":[{"value":"2306-7381","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,6,22]]}}}