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Tarsus
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Elbow joint
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Intervertebral Disc
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Collateral ligament
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High suspensory ligament
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Other remarkable Cases

Warmblood yearling, left tarsal injury Bone window, sagittal

Bone window, frontal: new bone formation and lytic lesions in talus and central tarsal bone

Bone window, transverse: new bone formation and lytic lesions in talus and central tarsal bone

Soft tissue window, frontal: severe desmopathy and enthesopathy of the medial collateral ligament

Soft tissue window, sagittal: severe enthesopathy of the pars tibiocalcanea of the medial collateral ligament
Diagnosis:
Massive traumatic bone lesions in the left talocrural joint with lytic lesion in the adjacent joint surfaces.
In addition, however, there is severe desmopathy and enthesopathy of the medial collateral ligament. The CT images show severe longitudinal tears and fibrillations in both the long and short parts of this ligament. The short part (pars tibiocalcanea) is partially ruptured.

14YO warmblood mare, chronic right front lameness, diagnostic anesthesia inconclusive 3D view of osteoarthritis of the elbow joint

Severe subchondral lytic bone lesion in proximo-medial radius surrounded by severe sclerosis

Isolated small bone fragment and cyst-like bone lesions in palmar aspect of elbow joint

Periosteal bone formation proximal radial bone
Diagnosis:
Chronic osteoarthritis of the right elbow joint and destructive bone reactions with a small bone fragment related to the syndesmosis of the radius and ulna.

Mild, unclear and inconsistent bilateral front lameness 3D view of cervical spine

Bone window: discopathy with mineralization and protrusion of the intervertebral disc between C4/C5

Soft tissue window: discopathy with mineralization and protrusion of the intervertebral disc between C4/C5

Axial: arthropathy of the left facet joint with an isolated bone fragment C2/C3

Frontal: arthropathy of the left facet joint with a isolated bone fragment C2/C3

Sagittal: arthropathy of the left facet joint with a isolated bone fragment C2/C3
Diagnosis:
The CT images describe an arthropathy of the left facet joint between C2 and 3 which is related to an isolated bone fragment at the left cranial articular process of C3. Arthroscopic removal of such fragments has been described recently. Just like the easily recognizable discopathy, the evaluation of the clinical significance of these findings is difficult. However, these changes are frequently found in so-called “poor performance” cases.

10 yo showjumper, 2/5 left front lameness straight line, 3/5 on left circle, mild improvement after DIP joint block, positive abaxial nerve block

Bone window – transverse – contrast medium in the lesions of the collateral ligament lesion of the DIP joint

Soft tissue window – frontal – longitudinal split the medial collateral ligament of the DIP joint
Diagnosis:
CT images present a desmopathy of the medial collateral ligament of the DIP joint
The lesion can already be clearly seen on the soft tissue images without contrast.
Intra-articular application of contrast agent improves visualization and may be helpful in smaller lesions.

Bone window, sagittal image, irregular palmar contour MC III, mineralization HSL

Soft tissue window– transversal – comparison left right front– severe core lesion and hypertrophy left high suspensory ligament

Soft tissue window – transversal – hypertrophy and mineralization left HSL

Soft tissue window, sagittal image, core lesion, hypertrophy and mineralization HSL
Diagnosis:
Chronic enthesopathy and desmopathy in the origin of the high suspensory ligament with obvious sclerotic and lytic and proliferative reactions of the third metacarpal bone. Severe core lesion in the HSL with chronic mineralization.

Fetlock joint, sagittal slice of a contrast study in the bone window – The contrast agent is embedded in the cartilage lesions. In this case there are both partial thickness and full-thickness-lesions

Fetlock joint, coronal slice of a contrast study in the bone window – CT arthrography (standing) of the non weight bearing limbs enables separation of both articular surfaces and shows multiple lesions of varying depth. Diagnosis of an osteoarthritis in the fetlock

Hoof, coronal slice of a contrast study in the bone window – At the level of the navicular bone an insertional tendinopathy in the medial branch of the deep digital flexor tendon (DDFT) can be detected

Hoof, coronal slice of a native scan in the bone window – A cortical intrusion in the palmar area of the flexor surface of the navicular bone

Hoof, sagittal slice of a contrast study in the bone window – Lesion in the cartilage surface on the palmar surface of the navicular bone

Hoof, coronal slice of a native scan in the soft tissue window – Insertional tendinopathy of the medial branch of the deep digital flexor tendon
