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The examination begins with observing the animal at rest, when rising, and during locomotion on various surfaces. Specific gait cues help identify the affected limb:
The examination begins with observing the animal at rest, when rising, and during locomotion on various surfaces. Specific gait cues help identify the affected limb:
- Forelimb Lameness: The animal typically elevates its head when bearing weight on the unsound limb and exhibits a shortened stride on that side.
- Hind Limb Lameness: The animal drops its head during weight-bearing on the affected limb.
Physical palpation is conducted in a distal to proximal manner, assessing bones, joints, and soft tissues for abnormalities such as swelling, pain, instability, crepitation, reduced range of motion, and muscle atrophy. For subtle or obscure cases, serial examinations before and after exercise may be necessary.
Physical palpation is conducted in a distal to proximal manner, assessing bones, joints, and soft tissues for abnormalities such as swelling, pain, instability, crepitation, reduced range of motion, and muscle atrophy. For subtle or obscure cases, serial examinations before and after exercise may be necessary.
Sedation Protocols:
For fractious patients or those requiring invasive procedures like arthrocentesis and radiography, heavy sedation or anesthesia is often required. Recommended intravenous drug combinations include:
Sedation Protocols:
For fractious patients or those requiring invasive procedures like arthrocentesis and radiography, heavy sedation or anesthesia is often required. Recommended intravenous drug combinations include:
- Butorphanol and acepromazine.
- Propofol.
- Medetomidine (alone or with butorphanol/hydromorphone).
- A combination of ketamine, diazepam, and acepromazine.
Diagnostic Imaging Modalities:
Diagnostic Imaging Modalities:
When physical examination is insufficient, several imaging techniques are utilized to refine the diagnosis:
When physical examination is insufficient, several imaging techniques are utilized to refine the diagnosis:
- Radiography: Plain (survey) radiography requires orthogonal views and often involves comparison with the "normal" contralateral limb to identify subtle lesions. Contrast studies include arthrograms for joint disease and myelography for spinal canal disorders.
- Ultrasonography: Primarily used for musculotendinous injuries, such as Achilles tendon ruptures or bicipital tenosynovitis.
- Advanced Imaging (CT, MRI, Scintigraphy): CT scans offer high contrast for osseous (bone) structures, while MRI is the preferred method for delineating soft tissue, joint injuries, and nervous tissues in the spine. Nuclear scintigraphy uses radioactive compounds to highlight periosseous soft tissue and bone lesions.
Arthroscopy:
Arthroscopy:
Arthroscopy serves as both a minimally invasive diagnostic and therapeutic tool. While it requires specialized equipment and expertise, it offers superior visualization of joint pathologies and allows for concurrent treatment of conditions like joint fractures, cranial cruciate ligament injuries, and osteochondrosis with less surgical trauma than traditional methods.
Arthroscopy serves as both a minimally invasive diagnostic and therapeutic tool. While it requires specialized equipment and expertise, it offers superior visualization of joint pathologies and allows for concurrent treatment of conditions like joint fractures, cranial cruciate ligament injuries, and osteochondrosis with less surgical trauma than traditional methods.
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