ECC Patient Assessment & Clinical Evaluation 2 — Questions and Answers
Question 1: During a static postural assessment of a horse, which finding would most directly suggest a thoracolumbar subluxation complex?
- Asymmetrical muscle development along the epaxial musculature (Correct answer)
- Bilateral forelimb lameness at the trot
- Increased digital pulse in the left hindlimb
- Nasal discharge with submandibular lymphadenopathy
Correct answer: Asymmetrical muscle development along the epaxial musculature
Asymmetrical epaxial muscle development indicates chronic unilateral tension or atrophy consistent with a vertebral subluxation complex in the thoracolumbar region.
Question 2: When palpating the equine sacroiliac region, which tissue is assessed by applying direct dorsoventral pressure over the tuber sacrale?
- The long dorsal sacroiliac ligament (Correct answer)
- The sacrotuberous ligament
- The iliolumbar ligament
- The supraspinous ligament
Correct answer: The long dorsal sacroiliac ligament
The long dorsal sacroiliac ligament runs superficially from the tuber sacrale toward the caudal sacrum and is directly palpable under dorsoventral pressure.
Question 3: A horse presents with reluctance to flex the neck laterally to the right. Which cervical assessment procedure would best isolate the specific segment responsible?
- Segmental motion palpation of each cervical vertebra during passive lateral flexion (Correct answer)
- Observation of the horse turning in a circle at liberty
- Upper cervical distraction test
- Cervical compression test at C1
Correct answer: Segmental motion palpation of each cervical vertebra during passive lateral flexion
Segmental motion palpation during passive lateral flexion allows the clinician to isolate the specific cervical vertebral level with restricted mobility.
Question 4: Which gait abnormality is classically associated with pain or dysfunction at the lumbosacral junction in horses?
- Shortened hindlimb stride with reduced lumbar flexion-extension (Correct answer)
- Bilateral forelimb toe-dragging
- Head bobbing at the walk only
- Circumduction of the left forelimb
Correct answer: Shortened hindlimb stride with reduced lumbar flexion-extension
Lumbosacral dysfunction restricts the normal flexion-extension arc, resulting in shortened hindlimb stride length and reduced lumbar mobility during locomotion.
Question 5: During the equine chiropractic case history intake, which question is MOST clinically relevant to establishing a chiropractic diagnosis?
- Has the horse's performance or behavior changed gradually or suddenly? (Correct answer)
- What brand of feed does the horse currently receive?
- What is the horse's blood type?
- How many hours per day is the horse turned out?
Correct answer: Has the horse's performance or behavior changed gradually or suddenly?
The onset pattern (gradual vs. sudden) helps differentiate degenerative joint changes from acute subluxation or traumatic events relevant to chiropractic treatment planning.
Question 6: When assessing hindlimb proprioception in a horse, which test involves placing the hindlimb in an abnormal position and observing the speed of correction?
- Proprioceptive placing test (Correct answer)
- Menace response test
- Tail-pull resistance test
- Hopping reaction
Correct answer: Proprioceptive placing test
The proprioceptive placing test positions a limb abnormally and times the horse's conscious correction, evaluating sensory pathway integrity from the limb to the CNS.
Question 7: A performance horse shows unilateral gluteal muscle atrophy without obvious lameness. Which structure should the equine chiropractor prioritize in the regional evaluation?
- Sacroiliac joint and L6-S1 articulation (Correct answer)
- Scapulohumeral joint
- Atlanto-occipital joint
- Temporomandibular joint
Correct answer: Sacroiliac joint and L6-S1 articulation
Unilateral gluteal atrophy without lameness is a hallmark of chronic sacroiliac or lumbosacral dysfunction causing neurogenic or disuse atrophy of the ipsilateral gluteal muscles.
ECC Patient Assessment & Clinical Evaluation 2
During a static postural assessment of a horse, which finding would most directly suggest a thoracolumbar subluxation complex?