A tangential radiographic projection for investigation of the equine temporomandibular joint. Export

@article{citeulike:5035656, abstract = {OBJECTIVE: To (1) describe a tangential radiographic projection of the equine temporomandibular joint (TMJ) and (2) optimize the radiographic angle and determine its use in standing sedated horses. STUDY DESIGN: Descriptive study. ANIMALS: Cadaveric equine skulls (n=11); 8 horses with a history of quidding or headshaking. METHODS: Tangential radiographic projections were taken of a TMJ of a cadaveric skull before and after intra-articular injection of radiographic contrast. Additional tangential radiographic projections were taken after TMJ dissection and placement of a wire along the articular surface of the mandibular condyle. Subsequently, 3 tangential radiographs were taken of both TMJs of 10 skulls at 75 degrees , 70 degrees , and 65 degrees to the dorsal plane (Rt/Le15Cd70D-Le/RtRVO). Each of the 3 images for each TMJ was ranked by 4 observers who were unaware of the projection angle. Interobserver variation was calculated using a Friedman analysis of variance and significance of the most prevalent angle with a 1-sample repeated measures test. Tangential radiographic projections of both TMJs were then taken of 8 standing sedated horses. RESULTS: Tangential radiographic projections allowed the lateral half of the TMJ to be viewed without superimposition of other structures and the anatomic orientation was determined. A 70 degrees projection to the dorsal plane was ranked as significantly better than other views (P<.001). There was no significant interobserver variation and the technique was safely performed in standing sedated horses with excellent image quality obtained. CLINICAL RELEVANCE: Tangential radiography of the TMJ may complement and add to information obtained from clinical examination and ultrasonography before referral for more advanced imaging techniques.}, author = {Townsend, Neil B. and Cotton, Johanna C. and Barakzai, Safia Z.}, citeulike-article-id = {5035656}, citeulike-linkout-0 = {http://dx.doi.org/10.1111/j.1532-950X.2009.00536.x}, citeulike-linkout-1 = {http://www.ingentaconnect.com/content/bsc/vsu/2009/00000038/00000005/art00008}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/19573061}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=19573061}, doi = {10.1111/j.1532-950X.2009.00536.x}, issn = {1532-950X}, journal = {Veterinary surgery : VS : the official journal of the American College of Veterinary Surgeons}, keywords = {equine, joint, radiography, temporomandibular}, month = {July}, number = {5}, pages = {601--606}, posted-at = {2009-08-20 18:56:17}, priority = {2}, publisher = {Blackwell Publishing}, title = {A tangential radiographic projection for investigation of the equine temporomandibular joint.}, url = {http://dx.doi.org/10.1111/j.1532-950X.2009.00536.x}, volume = {38}, year = {2009} }

TY - JOUR ID - citeulike:5035656 L3 - citeulike-article-id:5035656 N2 - OBJECTIVE: To (1) describe a tangential radiographic projection of the equine temporomandibular joint (TMJ) and (2) optimize the radiographic angle and determine its use in standing sedated horses. STUDY DESIGN: Descriptive study. ANIMALS: Cadaveric equine skulls (n=11); 8 horses with a history of quidding or headshaking. METHODS: Tangential radiographic projections were taken of a TMJ of a cadaveric skull before and after intra-articular injection of radiographic contrast. Additional tangential radiographic projections were taken after TMJ dissection and placement of a wire along the articular surface of the mandibular condyle. Subsequently, 3 tangential radiographs were taken of both TMJs of 10 skulls at 75 degrees , 70 degrees , and 65 degrees to the dorsal plane (Rt/Le15Cd70D-Le/RtRVO). Each of the 3 images for each TMJ was ranked by 4 observers who were unaware of the projection angle. Interobserver variation was calculated using a Friedman analysis of variance and significance of the most prevalent angle with a 1-sample repeated measures test. Tangential radiographic projections of both TMJs were then taken of 8 standing sedated horses. RESULTS: Tangential radiographic projections allowed the lateral half of the TMJ to be viewed without superimposition of other structures and the anatomic orientation was determined. A 70 degrees projection to the dorsal plane was ranked as significantly better than other views (P<.001). There was no significant interobserver variation and the technique was safely performed in standing sedated horses with excellent image quality obtained. CLINICAL RELEVANCE: Tangential radiography of the TMJ may complement and add to information obtained from clinical examination and ultrasonography before referral for more advanced imaging techniques. IS - 5 JF - Veterinary surgery : VS : the official journal of the American College of Veterinary Surgeons SN - 1532-950X EP - 606 TI - A tangential radiographic projection for investigation of the equine temporomandibular joint. PB - Blackwell Publishing VL - 38 SP - 601 KW - equine KW - joint KW - radiography KW - temporomandibular AU - Townsend, Neil AU - Cotton, Johanna AU - Barakzai, Safia PY - 2009/07// UR - http://dx.doi.org/10.1111/j.1532-950X.2009.00536.x ER -