CANINE TPLO: TIBIAL PLATEAU LEVELING OSTEOTOMY
Transcription
CANINE TPLO: TIBIAL PLATEAU LEVELING OSTEOTOMY
WHAT ARE POSSIBLE COMPLICATIONS? Progressive arthritis within the affected WHAT AREbePOSSIBLE HAT ARE POSSIBLE COMPLICATIONS? joint may seen in some dogs, especially WHAT ARE POSSIBLE COMPLICATIONS? COMPLICATIONS? if ligament deficiency has long Progressive arthritis within the been affected Progressive arthritis within the affected standing (over several months) joint may be seen in some especially • Progressive arthritis within dogs, the affected joint may joint may be seen in some dogs, especially if beligament Medial meniscal injuries may occur and deficiency has been long seen in some dogs, especially if ligament defiif diagnosed ligament asdeficiency has been long are audible “clicking” within standing (over months) ciency has beenseveral long standing (over several months) (over several thestanding joint after surgery months) (when meniscus Medial meniscal injuries may occur and • Medial meniscal injuries may occur areand diMedial meniscal injuries may occur becomes dislodged, displaced or isand trapped are diagnosed as audible “clicking” agnosed as audible “clicking” within the joint after diagnosed as audible “clicking” within in are an abnormal position between thewithin bones the joint after surgery meniscus surgery (when meniscus becomes dislodged, thethe joint after surgery (when meniscus in joint); this is(when usually a raredisbecomes displaced placed ordislodged, is trapped in an abnormal position bebecomes dislodged, displaced is trapped occurrence especially if ora isortrapped damaged intween anmeniscus abnormal position between the bones inthe an bones abnormal position between the bones the joint); or this is usually a rare wasin removed was released in joint); the joint); is usually especially ifthis a damaged meniscus was inoccurrence the thissurgery is usually a ararerare during the initial occurrence especially if a damaged removed or was released during initial surgery occurrence especially if athe damaged meniscus was removed or was released meniscus was removed or was released during the initial surgery during the initial surgery low,low, but but may may causecause implant • Infection Infectionrates ratesareare loosening (characterized by persisimplant or rejection loosening or rejection (characterized by persistence or with recurrence tence or recurrence of lameness or with ofswelling Infection rates areorlow, cause lameness with without swelling out and/or drainage of but fluid may at the surimplant loosening or rejection and/or drainage of fluid at the surgical site) gical site) that requires surgical removal of the (characterized bylow, persistence ordocumented. recurrence Infection rates once aresurgical but may cause that requires removal of the metallic implants bone healing is of lameness without swelling metallic implantswith onceoror bone healing is implant loosening rejection and/or drainage of fluid at the surgical site) documentedby persistence or recurrence (characterized that requires surgical removal of the of lameness with or without swelling metallic implants once bone healing is and/or drainage of fluid at the surgical site) POSTOPERATIVE REHABILITATION POSTOPERATIVE POSTOPERATIVE REHABILITATION REHABILITATION POSTOPERATIVE REHABILITATION 4135 Old Town Road P.O. Box 1168 Huntingtown, MD 20639 4135 Old Town Road, P.O. Box 1168 Local: 410.414.8250 4135 Old Town Road Huntingtown, MD 20639 Metro: 301.843.8290 P.O. Box 1168 Local: 410.414.8250 | Fax: 410.414.2222 Fax: 301.855.9106 Huntingtown, MD 20639 4135 Old Town Road Local: 410.414.8250 Acknowledgement: Brochure content provided in part P.O. Box 1168 Acknowledgement: Brochure content provided in part by 301.843.8290 by Amy LacosseMetro: for Calvert County Public Schools Huntingtown, MD 20639 AmyCommunity Lacosse for Calvert County Public Schools Fax: 301.855.9106 Mentorship Program project. Local: 410.414.8250 Community Mentorship Program project. Metro: 301.843.8290 Acknowledgement: Brochure content provided in part by Amy LacosseFax: for Calvert County Public Schools 301.855.9106 CANINE TPLO: TIBIAL PLATEAU LEVELING OSTEOTOMY of rear limb lameness in the dog. The actual of is rear limb lameness inand theincludes: dog. The actual cause likely multifactorial WHAT ISISCRUCIATE LIGAMENT DISEASE? WHAT CRUCIATE LIGAMENT DISEASE? cause is Cranial likely multifactorial and includes: WHAT IS CRUCIATE DISEASE? (Anterior) LIGAMENT Cruciate Ligament (CCL or by either or both cranial drawer or cranial tibial by either(i.e. or both cranial drawer or cranial tibial thrusting shown below as asliding forward torn oror only torn (stretched (stretched only with with a few few disrupted disruptedof thrusting (i.e. shown below as sliding forward of torn (stretched or only with a few disrupted tornfibers) (stretched orrespect only do with a few disrupted fibers) the tibia/T with the femur/F). have any fibers) ligaments ligaments dotonot not have any palpable palpableligathe tibia/T with respect to the femur/F). fibers) ligaments do not have any palpable instability. The may bebecharacterized ments do not have any palpable The instainstability. Theinstability instability mayinstability. characterized damaged it will be removed; if not, a releasin damaged itwill will be removed;toifhopefully not, a releasing technique be performed preven WHAT ARE OF TPLO WHAT AREGOALS GOALS OF TPLOSURGERY? SURGERY? technique will be performed to hopefully preven WHAT ARE GOALS OF TPLO SURGERY? WHAT ARE GOALS OF it from future entrapment or damage. The top o The joint is approached to examine the degree of Cranial (Anterior) Cruciate Ligament (CCL or The joint is approached to examine the degree of WHAT IS (Anterior) CRUCIATE Cranial Cruciate Ligament (CCL causes or it from future entrapment or damage. The top of The joint is approached to examine the degree of ACL) disease is one of the most common medial meniscal injury; if the medial meniscus is Trauma ACL) disease is one of the most common causes the tibia is then cut using an oscillating bone saw TPLO SURGERY? medial meniscal injury; if the medial meniscus is LIGAMENT DISEASE? ACL)ofdisease is one of the most common causes instability. The instability may be characterized medial meniscal injury; if the medial meniscus is rear Trauma thethat tibia isbe then cut using an oscillating bone saw limb ininthe dog. The either both ororcranial tibial damaged ititwill ififof not, a areleasing rear limblameness lameness theand dog.loss The actual either bothcranial cranialdrawer drawer cranial tibial damaged will beremoved; removed; not, releasing bilitybyby may beoror characterized by either or both cranial so this free segment bone can beofrotated b of Ligamentous stretching ofactual The joint iswill approached to examine the degree me- by of rear lameness in stretching the dog. The actual by thrusting either or both cranial drawer or cranial tibialofof damaged itwill be removed; ifof not, a releasing Cranial (Anterior) Cruciate Ligament (CCL or ACL) disease cause isLigamentous likely multifactorial and includes: so that this free segment bone can be rotated (i.e. shown below as sliding forward technique be performed to hopefully prevent limb and loss of cause is likely multifactorial and includes: thrusting (i.e. shown below as sliding forward technique will be performed to hopefully prevent a predetermined amount in order to achieve drawer or cranial tibial thrusting (i.e. shown below as integrity over time (partial tearing) cause is likely multifactorial and includes: dial injury; if amount the medial meniscus is damthrusting (i.e.with shown below as sliding forward of technique willentrapment be performed to hopefully prevent the respect totothe ititfrom future orordamage. The top a meniscal predetermined in order toof is one of the most common causes of (partial rear limbtearing) lameness in thetibia/T tibia/T with respect thefemur/F). femur/F). from future entrapment damage. The top ofachieve integrity over time more level tibial plateau slope (i.e. bringing tha sliding forward of the tibia/T with respect to the femur/F). Abnormal joint conformation WHAT IS CRUCIATE LIGAMENT DISEASE? torn (stretched or only with a few disrupted WHAT ARE GOALS OF TPLO SURGERY? the tibia/T with respect to the femur/F). it from future entrapment or damage. The top of WHAT IS CRUCIATE LIGAMENT DISEASE? Trauma torn (stretched or only with a few disrupted the tibia is then cut using an oscillating bone saw aged it may be removed; if not, a releasing technique WHAT ARE GOALS OF TPLO SURGERY? Trauma the tibia is then cut using an oscillating bone saw more level tibial plateau slope (i.e. bringing the the dog. Theactual cause is likelyjoint multifactorial and includes: Abnormal conformation red line almost inofofan line with the green). Cranial (Anterior) Cruciate Ligament fibers) The joint isisapproached to the degree ofof Surger Cranial (Anterior) Cruciate Ligament (CCL (CCL oror causing stresses within the fibers) ligaments ligaments do do not not have have any any palpable palpable joint approached toexamine examine the Trauma the tibia isThe then cut using oscillating bone saw sosomay that this free segment bone can bebe rotated by undue Ligamentous stretching and loss that this free segment bone can rotated by be performed toin hopefully prevent itdegree from future Ligamentous stretching and lossofof red line almost line with the green). causing undue stresses within the ACL) disease isisone ofofthe most common causes instability. The instability may be characterized medial meniscal injury; if the medial meniscus isis Surgery ACL) disease one the most common causes instability. The instability may be characterized medial meniscal injury; if the medial meniscus fee includes initial diagnostics, surgery • Trauma ligament F a apredetermined amount in order to achieve a so that this free segment of bone can be rotated by integrity over time (partial tearing) Ligamentous stretching and loss of predetermined amount in order to achieve a integrity over time (partial tearing) or itdamage. The topdiagnostics, theaareleasing tibia is then ofof rear feedamaged includes initial surgery by removed; ififofnot, rear limb limb lameness lameness inin the the dog. dog. The The actual actual byeither eitherororboth bothcranial cranialdrawer drawerororcranial cranialtibial tibial entrapment damaged it will willbe be removed; not, releasing ligament F hospitalization, medications, wound healing an level tibial plateau slope (i.e. bringing the amore predetermined amount in order tobringing achieve a • Ligamentous loss integrity stretching Abnormal joint conformation integrity overand time (partial tearing) level tibial plateau slope (i.e. the Abnormal joint conformation cause isof multifactorial thrusting technique will be performed prevent cause islikely likely multifactorialand andincludes: includes: thrusting(i.e. (i.e.shown shownbelow belowasassliding slidingforward forwardofofmore technique will bemedications, performed tohopefully hopefully prevent wound healing cut hospitalization, using an oscillating bone to saw so that this free and red line almost in line with the green). Surgery more level tibial plateau slope (i.e. bringing the initial physical rehabilitation visit, and 8-wee causing undue stresses within the red line almost in line with the green). Surgery the tibia/T with respect to the femur/F). it from future entrapment or damage. The top of (partial Abnormal joint conformation over time tearing) causing undue stresses within the the tibia/T with respect to the femur/F). T it from future entrapment or damage. The top of initial rehabilitation and 8-week segment ofphysical bone can be rotated by avisit, predetermined TFF fee includes diagnostics, surgery, within Trauma the then cut using an bone saw ligament fee includes initial diagnostics, surgery, red line almost inisinitial line with the green). Surgery Trauma thetibia tibiais then cut using anoscillating oscillating bone saw ligament postoperative visit for sedation and radiographs. causing undue stresses the • Abnormal joint conformation causing undue postoperative visit for sedation and radiographs. so that this free segment of bone can be rotated by angle in order to achieve a more level tibial plateau Ligamentous hospitalization, medications, wound and so that this free segment of bone healing can besurgery, rotated Ligamentousstretching stretchingand andloss loss hospitalization, medications, wound healing andby fee includes initial diagnostics, ligament F ofof stresses within the ligament a predetermined amount in order to achieve a integrity integrityover overtime time(partial (partialtearing) tearing)TT Abnormal Abnormal joint joint conformation conformation Tthe causing causing undue undue stresses stresses within within the ligament ligament a predetermined inalmost order toin8-week achieve initial rehabilitation visit, and slopephysical (i.e. bringing theamount red line lineand witha the initial physical rehabilitation visit, and 8-week hospitalization, medications, wound healing more level tibial plateau slope (i.e. morevisit levelfor tibial plateauand slope (i.e.bringing bringingthe the postoperative sedation radiographs. postoperative visit forinsedation and radiographs. initial physical rehabilitation visit, and 8-week green). Surgery fees initial diagnostics, red line line the Surgery red linealmost almost ininclude linewith with thegreen). green). Surgerysurpostoperative for sedation and radiographs. includes initial diagnostics, surgery, fee visit includes initial diagnostics, surgery, gery, fee hospitalization, medications, wound healing FF hospitalization, medications, wound healing and hospitalization, medications, wound and and initial physical rehabilitation rehabilitation visit,healing and 8-week initial initial physical physical rehabilitation visit, visit, and and 8-week 8-week postoperative visitvisit for and radiographs. postoperative for sedation radiographs. postoperative visit forsedation sedationand and radiographs. TT Specially Speciallypositioned positionedradiographs radiographs (x-rays) (x-rays) of of the the knee and tibia usually confirm the presence of knee and tibia usually confirm theof presence of Specially positioned radiographs (x-rays) Specially positioned radiographs (x-rays) ofthe theand Specially positioned radiographs (x-rays) theofknee effusion and any signs of arthritis (bony spurs knee and tibia usually confirm the presence of effusion and any signs of arthritis (bony spurs knee and tibia usually confirm the presence of tibia usuallypositioned confirm theradiographs presence of effusion and signs Specially (x-rays) of any the accumulated along surfaces). effusion any signs of effusionand and anyjoint signs ofarthritis arthritis(bony (bonyspurs spurs accumulated along joint surfaces). of arthritis (bony spurs accumulated along joint surfaces). knee and tibia along usually confirm the radiographs presence Specially positioned (x-rays) Specially positioned radiographsof (x-rays) ofof the the accumulated joint surfaces). accumulated along joint surfaces). knee confirm the effusion and any signs of tibia arthritis (bony spurs knee and and tibia usually usually confirm the presence presence ofof effusion and effusion and any any signs signs ofof arthritis arthritis (bony (bony spurs spurs accumulated along joint surfaces). accumulated accumulatedalong alongjoint jointsurfaces). surfaces). Many breeds areare affected butbutsome may be Many breeds affected some maymay be bebe Many are but Many breeds breeds are affected affected but some some may overrepresented: Akita, Labrador retriever, golden overrepresented: Akita, Labrador retriever, golden overrepresented: Akita, Labrador retriever, golden overrepresented: Akita, Labrador retriever, golden Many breeds are affected but someMany may be overrepresentbreeds are affected but Many breeds arebulldog, affected but some some may may be be retriever, American bulldog, English retriever, bulldog, English bulldog, retriever, American bulldog, English bulldog, ManyAmerican breeds are affected but some may be retriever, American bulldog, English bulldog, overrepresented: Akita, Labrador retriever, golden ed: Akita, Rottweiler. Labrador retriever, golden retriever, American overrepresented: Akita, Labrador retriever, golden Some factors include: overrepresented: Akita, Labrador retriever, golden Rottweiler. Somepredisposing predisposing factors include: Rottweiler. Some predisposing factors include: Rottweiler. Some predisposing factors include: retriever, retriever, American American bulldog, bulldog, English English bulldog, bulldog, WHAT SHOULD EXPECT AFTER TPLO? WHAT I EXPECT AFTER WHAT SHOULD AFTER WHAT SHOULDI IEXPECT EXPECT AFTERTPLO? TPLO? TPLO? effusion effusion effusion effusion TPLO usually fulltotoreturn return to normal norma TPLO in full to TPLO usually results ininfull normal TPLO usually resultsresults fullreturn return normal WHAT SHOULD I EXPECT WHAT SHOULD I EXPECT AFTER TPLO? WHAT SHOULD I EXPECT AFTER TPLO? function in 96+% of TPLO? patients wit function inin 96+% ofof AFTER patients with WHAT SHOULD I EXPECT function of patients with effusion function 96+% patients with TPLO usually TPLO usuallyresults results inin full full return return toto normal normal AFTER TPLO? uncomplicated healing. Patients typically stay TPLO usually results in full return to normal uncomplicated healing. Patients typically sta uncomplicated healing. Patients typically stay uncomplicated Patients typically stay function function inin 96+% 96+% ofof patients patients with with bulldog, EnglishAmerican bulldog, Rottweiler. Some predisposing in the hospital the night of their surgery and are function in 96+% of patients with in the hospital the night of their surgery and are retriever, bulldog,Rottweiler. English bulldog, uncomplicated Patients typically stay in the the hospital night oftotheir surgery in hospital the their surgery and ar uncomplicated healing. Patients typically stay and Rottweiler. Some Somepredisposing predisposingfactors factorsinclude: include: TPLO usually resultshealing. in full return normal function in are factors include: Some discharged the following day to begin anand 8-are predisposing Obesity uncomplicated healing. Patients typically stay ininthe hospital the night ofoftheir surgery discharged the following day to begin an 8Obesity Rottweiler. factors include: the hospital the night their surgery and are discharged day to begin an Obesity discharged the following day to begin an 8 Obesity 96+% of patients with uncomplicated healing. Patients 8discharged the day toto begin an 8-8 Obesity week activity restricted recovery. Most Breed and joint conformation discharged the following following day begin an Obesity week activity restricted recovery. Most in the hospital the night of their surgery and are Breed and joint conformation • Obesity week Breed joint conformation week restricted recovery. Mos Breed andand joint conformation typically stayactivity inactivity the hospital the night ofrecovery. their surgery andMos restricted recovery. problems Breed and week restricted recovery. Most Breed andjoint jointconformation conformation exhibit gradually increasing weight patients Concurrent orthopedic exhibit gradually increasing weight patientsweek Concurrent orthopedic problems discharged theactivity following day to begin anMost 8- weight and Obesity • Breed joint conformation WHAT IS THE TPLO? gradually increasing patients Concurrent orthopedic problems exhibit gradually increasing weight patients exhibit increasing weigh patients Concurrent orthopedic problems WHAT IS THE TPLO? Concurrent orthopedic problems exhibit gradually increasing weight patients are discharged the following day to begin an 8-week luxation, Concurrent problems bearing within 2-10 weeks after surgery. (hip patellar bearing withinwithin 2-10 weeks after surgery. (hip dysplasia, patellar luxation, orthopedic WHAT IS TPLO? week activity restricted recovery. Most Breed anddysplasia, joint conformation WHAT ISTHE THE TPLO? performed WHAT THE TPLO? WHAT ISISTHE THE TPLO? WHAT IS TPLO? bearing 2-10 weeks after surgery. luxation, The tibial plateau leveling osteotomy bearing within 2-10 weeks after exhibit surgery. (hipdysplasia, dysplasia,patellar patellar luxation, • Concurrent orthopedic problems (hip(hip The tibial plateau leveling osteotomy performed bearing 2-10 weeks after surgery (hip dysplasia, patellar luxation, bearing within weeks after surgery (hip dysplasia, patellar luxation, activity restricted recovery. Most patients gradknee OCD) Thermal therapy, general wound care, and The tibial leveling performed knee OCD) Thermal therapy, general wound care, and The tibialplateau plateau levelingosteotomy osteotomy performed exhibit gradually increasing weight patients Concurrent orthopedic problems knee The tibial plateau leveling performed Thermal therapy, general wound and kneeOCD) OCD) Thermal therapy, general wound care, care, and here atatMASH since 2004 isosteotomy surgical technique The tibial plateau leveling performed here MASH since 2004 isaosteotomy asince surgical technique dysplasia, patellar luxation, knee OCD) knee OCD) here at MASH since 2004 is a surgical technique Thermal therapy, general wound care, Strenuous exercise/activity WHAT IS THE TPLO? here at MASH 2004 is a surgical technique knee OCD) passive range of motion exercises are Thermal wound care, an ually increasing weight bearing within 2-10 weeks af- and dysplasia, Strenuouspatellar exercise/activity passive range range of of motion exercises are The tibial plateau leveling osteotomy performed here at Strenuous passive motion exercises are Strenuousexercise/activity exercise/activity bearing within 2-10 weeks after surgery. (hip luxation, passive range of motion exercises are used toMASH stabilize knee joints have suffered here since 2004 athat surgical technique used toplateau stabilize knee joints have suffered here atatMASH since 2004 isisathat surgical technique used to stabilize knee joints that have suffered used to stabilize knee joints that have suffered The tibial leveling osteotomy performed • Strenuous exercise/activity Strenuous exercise/activity encouraged at home until the first hospital passive of motion exercises are Strenuous exercise/activity encouraged at home until the first hospital encouraged at home until the first hospital passive range motion exercises ar ter surgery. Thermal therapy, general wound care, and encouraged at home until the first hospital knee OCD) MASH since 2004 is acute a surgical technique used to stabilize Thermal therapy, general wound care, and acute chronic cranial cruciate ligament (CCL) ororjoints chronic cranial cruciate ligament used toor stabilize knee joints that have suffered acute or chronic cranial cruciate ligament (CCL) acute chronic cranial cruciate ligament(CCL) (CCL) used stabilize knee that have suffered HOW ISISTHE DISEASE DIAGNOSED? HOW IS here attoMASH since 2004 is a surgical technique HOW ISTHE THEDISEASE DISEASEDIAGNOSED? DIAGNOSED? HOW THE DISEASE DIAGNOSED? recheck appointment for wound healing and recheck appointment for wound healing and recheck appointment for wound healing and encouraged at home until the first hospital recheck appointment for wound healing and passive range of of motion exercises arethe encouraged at injury. achieved by reducing the encouraged at motion home until first injury. This isisachieved by the current Strenuous exercise/activity injury. This This isreducing achieved by reducing thecurrent current passive range exercises are hospita knee joints that have suffered acute or chronic cranial cruciinjury. This achieved byisreducing the current acute chronic cranial cruciate ligament (CCL) AAexamination thorough will be thorough orthopedic orthopedic examination will be thorough orthopedic will acute ororstabilize chronic cranial cruciate ligament (CCL) physical rehabilitation examination 2weeks HOW THE DISEASE DIAGNOSED? used to knee joints that have suffered thorough orthopedic examination will beexamination be physical rehabilitation examination 2weeks weeks physical rehabilitation examination atat2at2atweeks HOW ISAATHE DISEASE DIAGNOSED? physical rehabilitation examination measured tibial plateau angle (TPA, i.e. measured tibial plateau angle (TPA, i.e.the theangle angle recheck appointment for wound healing and measured tibial plateau angle (TPA, i.e. the angle HOW IS IS THE DISEASE DIAGNOSED? measured tibial plateau angle (TPA, i.e. the angle home until the first hospital recheck appointment for encouraged at home until the first hospital recheck appointment for wound healing an performed to evaluate the reported lameness and performed evaluate the reported lameness and ate ligament (CCL) injury. This is bythe reducing the injury. This achieved byachieved reducing the current after Unfortunately, roughly 40-50% performed totoevaluate the reported and aftersurgery. surgery. Unfortunately, roughly 40-50% performed evaluate the reportedtolameness lameness and injury. This isisachieved by reducing current acute orfluid chronic cranial cruciate ligament (CCL) formed between red green lines shown after surgery. Unfortunately, roughly 40-50% formed between redand and green lines shownbelow) below) after surgery. Unfortunately, roughly 40-50% thorough orthopedic examination will be formed between red and green lines shown below) to localize the pain, effusion (increased physical rehabilitation examination at 2 weeks HOW IS THE DISEASE DIAGNOSED? A AAthorough orthopedic examination will be formed between red and green lines shown below) to localize the pain, effusion (increased fluid recheck appointment for wound healing and healing and rehabilitation examination thorough examination will be performed to of dogs that rupture one cranial cruciate physical rehabilitation examination at 2 week of dogs thatphysical rupture one cranial cruciate totoorthopedic localize the pain, effusion (increased fluid measured tibial plateau angle (TPA, i.e. the angle current measured tibial plateau angle (TPA, i.e. the angle the from >15º to 5-10º, thereby eliminating the pain, effusion (increased fluid from >15º to(TPA, 5-10º, thereby eliminating the injury. This achieved by reducing the current measured plateau i.e. the angle ofofwound dogs that one cranial cruciate dogs that rupture rupture one cranial cruciate within the and instability totibial performed tolocalize evaluate reported lameness and from 5-10º, thereby eliminating the within thejoint), joint), and anypalpable palpable instability to is to from >15º >15º to 5-10º,angle thereby eliminating the A thorough orthopedic examination will beany ligament may rupture the opposite side within performed towithin evaluate thethe reported lameness and after surgery. Unfortunately, roughly 40-50% ligament may rupture the opposite side within physical rehabilitation examination at 2 weeks forward thrusting of the tibia or protecting a within the and any palpable instability to forward thrusting of the tibia or protecting a at 2 weeks after surgery. Unfortunately, roughly 40evaluate the reported lameness to localize the pain, efafter surgery. Unfortunately, roughly thejoint), joint), andand any palpable instability to formed between redand and green lines shown below) formed between red and green lines shown below) from measured tibial plateau (TPA, i.e. the angle the stifle (knee) Some with partially ligament may rupture the(increased stifle (knee)joint. joint. Somedogs dogs with partially formed between red green lines shown below) ligament may rupturethe theopposite oppositeside sidewithin within 40-50% forward thrusting of the tibia oror protecting a>15º to localize the pain, effusion fluid forward thrusting ofangle the tibia protecting a 11-15 months. performed topain, evaluate the reported lameness and 11-15 months. partially torn ligament from further stress. partially torn ligament from further stress. to fusion localize the effusion (increased fluid the stifle (knee) joint. Some dogs with partially after surgery. Unfortunately, roughly 40-50% of dogs that rupture one cranial cruciate the stifle (knee) joint. Some dogs with partially 50% of dogs that rupture one cranial ligament (increased fluid within the joint), and any palpable from >15º 5-10º, thereby eliminating the formed between red and green lines shown ofmonths. dogs that rupture onecruciate cranial cruciat 11-15 to 5-10º, thereby eliminating the forward thrusting of thethe tibpartially torn ligament from further stress. 11-15 months. from >15º toto 5-10º, thereby eliminating partially torn ligament from further stress.below) tothe localize the pain, effusion (increased fluid within the joint), palpable instability of may dogs that the rupture one cranial cruciate within joint), andand anyany palpable instability to to ligament may rupture the opposite side within from >15º to 5-10º, thereby eliminating the forward thrusting of the tibia or protecting a rupture opposite side within 11-15 months. instability to the stifle (knee) joint. Some dogs with partially ligament may rupture the opposite side withi ia or protecting a partially fromprotecting further stress. forward thrusting of torn theligament tibia or a within the joint), and Some any palpable instability to the stifle (knee) joint. dogs with partially ligament may rupture the opposite side within the stifle (knee) joint. Some dogs with partially 11-15 months. forward thrusting of thefrom tibiafurther or protecting a partially torn ligament stress. 11-15 months. the stifle (knee) joint. Some dogs with partially partially torn ligament from further stress. 11-15 months. partially torn ligament from further stress. effusion effusion