Distal Tarsal Joint Synovitis and Osteoarthritis

Distal Tarsal Joint Synovitis & Osteoarthritis EQS 200 The Hock A Review The most common site for rear limb stress injuries, performance-limiting problems, and pain Receives considerable concussive forces Consists of one large hinge joint and three narrow, horizontal, relatively

immobile joints Tibiotarsal joint Proximal intertarsal joint Distal intertarsal joint Tarsometatarsal joint Distal Tarsal Joint Synovitis & Osteoarthritis So what is it? An Osteoarthritis, or final phase of degenerative joint disease (DJD), in the lower three hock joints

A common cause of hock lameness or pain in all horses Also called Bone Spavin The term spavin refers to problems in the narrow lower joints in the hocks The Many Spavins The term Bone Spavin can be further broken down depending on clinical signs Blind/Occult Spavin

Inability to see or palpate the bony growth Jack Spavin A bony growth of variable size that pushes out against the overlying tendon Juvenile Spavin Seen in young horses Due to abnormal development of the

small cuboidal bones of the hock or incomplete ossification in premature or dysmature foals Causes This is a Wear and Tear Injury! 1. Cartilage Compression Excessive compression over time can cause the cartilage between the upper and lower surfaces of the lower tarsal bones to become

flattened and eroded Joint spaces become narrow, eventually filling with new bone 2. Uneven Loading Causes excessive compression on the cartilage and bone on one side and strain in the joint capsule and supporting ligaments on the other Repeated overloading of a joint surface can cause remodeling and new bone production in the form of bone spurs Bony changes such as narrowing of joint space and

bone spurs around the joint are indicators of a bone Contributing Factors Conformation Results in uneven loading of the hocks Cow hocks, in at the hocks, sickle hocked Poor trimming and shoeing Activity Sports that require a lot of hock flexion Excessive concussive forces acting on the hock Subtle, vague, intermittent

hindlimb lameness that may shift from one leg to another Often bilateral Tend to land toe first and have shorter arc of foot flight To reduce concussion and hock flexion Results in dragging of the toe Hindlimb flexion tests produce temporary worsening of lameness

Advanced cases have bony swelling on the hock, usually on the inside of the joint Clinical Signs Diagnostic Tools A combination of. Gait evaluation Flexion tests Radiographs Unless it is an early spavin or very mild

Will show new bone production (bone spurs) and narrowing of joint spaces Severity of bony changes does not always match the degree of pain and lameness Scinitigraphy Good for early or mild cases that show no radiographic evidence Joint Block Can be difficult due to the lower hock joints being narrow

Examples of Varying Degrees of Distal Osteoarthritis #1 Examples of Varying Degrees of Distal Osteoarthritis #2 Examples of Varying Degrees of Distal Osteoarthritis #3 Treatment No specific treatment due to

the changes being irreversible A combination of pain relieving and management changes NSAIDs Corticosteriods Short-term, anti-inflammatory relief HA and Adequan Good for mild cases Shoeing Quicken the breakover and restore hoof balance

Training Should be exercised daily, but reduction of exercise intensity will be necessary Surgery Natural bone fusion (ankylosis) of the lower two joints can help reduce or eliminate lameness but it can be slow and unpredictable The point of surgical intervention is to accelerate the bone fusion process Surgical Fusion = arthrodesis Hock Drilling Destruction of the joint cartilage with a drill bit

Filling holes with bone graft Chemical Injection of a caustic substance to destroy cartilage Laser Heat the cartilage so cells in the cartilage die, resulting in eventual fusion Video Surgical Fusion of Distal Hock Joints

Prognosis Dependent on: The joints involved Number of joints affected Severity of bony changes How quickly the horses condition is worsening What the horse is used for For horses performing high-level athletic function, prognosis is not good Medical and pain management are key for longevity of both the horses career and

overall well-bring! Please use the following password to access Quiz 9 Osteo2015

Recently Viewed Presentations

  • Three Corrective Options - deq.louisiana.gov

    Three Corrective Options - deq.louisiana.gov

    Louisiana Department of Environmental Quality Risk Evaluation/Corrective Action Program (RECAP) Appendix F Current Use 1-mile radius water well survey 500-feet radius walking receptor survey Potential Use Maximum sustainable well yield Direct Measurement Estimated Measurement Total Dissolved Solids (TDS) of groundwater...
  • The Integration of Para- consistent Conceptual Models ...

    The Integration of Para- consistent Conceptual Models ...

    The footer goes here The Integration of Para-consistent Conceptual Models Influenced by Uncertainty: A Belief-theoretic Approach Ebrahim Bagheri [email protected] Agenda Introduction Background and Related Work Challenges Motivations Proposed Model Contributions to Knowledge Evaluation Methods Thesis Timeline Introduction Software development is...
  • Promoting & Protecting Privacy in California

    Promoting & Protecting Privacy in California

    Identity theft - Personal information is sought by identity thieves, who use it to harm people. Citizens have no choice - required to provide personal information to government. ... Consequences for an agency - which may be sued, if violation...
  • Phantom of the Opera Famous Quotes, Study Guide Questions and ...

    Phantom of the Opera Famous Quotes, Study Guide Questions and ...

    Phantom of the Opera Study Guide Questions 7th grade GRC Literature, 2004 OMMS, Mrs. Cline
  • Automation Training - Western Regional Gas

    Automation Training - Western Regional Gas

    ASME B31Q Project Team formed to develop a technically sound, holistic, consensus standard for the qualification of pipeline personnel. 2005: PHMSA amended OQ rule to address training, on-the-job performance and reporting significant plan changes.
  • Chapter 4 Operating Systems and File Management Computer

    Chapter 4 Operating Systems and File Management Computer

    041300 Windows File Explorer is a file management utility. 041400 Hard disks, CDs, and DVDs are formatted into tracks and sectors. 041500 Time Machine is synchronization software used for backup on Macs. 041600 To repopulate a new hard disk from...
  • PowerPoint Presentation

    PowerPoint Presentation

    for a longer action in the past interrupted by a shorter one: He was cutting the fabric when the client called him on the cell. THE PAST CONTINUOUS TENSE He was cutting the fabric when the client called him on...
  • Strategic Management Process, Strategic Planning

    Strategic Management Process, Strategic Planning

    Jessica Burns, Mike Baker, John Klinger Strategic Management Definition- the art and science of formulating, implementing, and evaluating cross-functional decisions that enable an organization to achieve its objectives Stages of Strategic Management Formulating- developing a vision and mission statement, identifying...