Publications by authors named "Andrea Bischofberger"

The objective of this study was to compare articular cartilage thickness observed in the different 2D and 3D sequences to the cartilage thickness of the equine stifle in cadavers to determine the accuracy of each sequence. The study was conducted as a blinded laboratory study using seven equine stifle specimens. The 2D (T2W TSE) and 3D (3D VIEW T2W HR, T2 3D mFFE, T1W VISTA SPAIR, 3D PDW SPAIR) 3-tesla MRI sequences of each stifle were obtained.

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Tenosynovitis of the digital flexor tendon sheath (DFTS) is diagnosed using ultrasonography and contrast tenography. Nevertheless, making a precise preoperative diagnosis is challenging. This study aimed to determine and compare the sensitivity and specificity of low-field MRI and MRI tenography (MRIt) to detect artificially created soft-tissue lesions in the DFTS.

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Article Synopsis
  • The study aimed to evaluate and compare the effectiveness of computed tomographic arthrography (CTA) and 3-Tesla magnetic resonance imaging (MRI) in identifying artificial cartilage lesions in equine knee joints.
  • A total of 79 cartilage defects were created in horse cadavers, and both imaging methods were analyzed for their sensitivity and specificity by a radiologist unaware of the lesions.
  • Results indicated that while MRI had a slightly higher sensitivity (66% vs. 53%), CTA demonstrated significantly better specificity (66% vs. 52%), suggesting that CTA might be a more accurate choice for diagnosing normal cartilage, particularly in a clinical environment where it is more accessible.
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Objective: To determine the diagnostic performance of computed tomographic arthrography (CTA) and 3 Tesla magnetic resonance imaging (MRI) for detecting artificial meniscal, meniscotibial ligament (MTL) lesions and cruciate ligament (CL) lesions in horses.

Study Design: Ex vivo controlled laboratory study.

Animals: Nineteen stifles from adult horses.

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Objective: To describe outcome and complications after large intestinal trocarization in equids with colic and identify factors associated with nonsurvival and clinically relevant peritonitis (CRP).

Animals: 228 (198 horses, 24 ponies, and 6 donkeys and mules) equids with colic that underwent large intestinal trocarization.

Procedures: Medical records from 2004 through 2015 were reviewed for equids with colic that underwent large intestinal trocarization.

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Objective:  The aim of this study was to compare the potential of an unshod and shod hoof to cause an orbital fracture in the event of a kick.

Materials And Methods:  Thirty-four equine cadaveric orbitae were exposed to a steel or horn impactor in a dropping test set-up. An impactor velocity of 7 m/s was used for both materials.

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OBJECTIVE To characterize delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) features of healthy hyaline cartilage of the distal interphalangeal joint (DIPJ) of horses, to determine whether dGEMRIC can be used to differentiate various stages of naturally occurring osteoarthritis of the DIPJ, and to correlate relaxation times determined by dGEMRIC with the glycosaminoglycan concentration, water content, and macroscopic and histologic findings of hyaline cartilage of DIPJs with and without osteoarthritis. SAMPLE 1 cadaveric forelimb DIPJ from each of 12 adult warmblood horses. PROCEDURES T1-weighted cartilage relaxation times were obtained for predetermined sites of the DIPJ before (T1) and after (T1) intra-articular gadolinium administration.

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While articular cartilage changes are considered to be one of the initial events in the pathological cascade leading to osteoarthritis, these changes remain difficult to detect using conventional diagnostic imaging modalities such as plain radiography. The aim of this prospective, experimental, methods comparison study was to compare the sensitivity of magnetic resonance imaging (MRI), magnetic resonance arthrography, computed tomography (CT), and CT arthrography in the detection of artificially induced articular cartilage defects in the equine carpal joints. Defects were created in the antebrachiocarpal and middle carpal joint using curettage by a board-certified equine surgeon.

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Objective: To compare the effects of two balanced anaesthetic protocols (isoflurane-dexmedetomidine versus medetomidine) on sedation, cardiopulmonary function and recovery in horses.

Study Design: Prospective, blinded, randomized clinical study.

Animals: Sixty healthy adult warm blood horses undergoing elective surgery.

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Article Synopsis
  • The study aimed to investigate scapular cortex thickness, bone density, and the course of the suprascapular nerve in horses to optimize surgical fixation of supraglenoid tubercle fractures.
  • Twelve equine cadaver shoulders were analyzed using computed tomography, with measurements taken for bone density and morphometric dissection of the suprascapular nerve's path.
  • Results indicated that the suprascapular nerve is located cranially on the scapula, and significant differences in scapular bone density were found between the cranial and caudal regions, highlighting the importance of anatomical knowledge for surgical procedures.
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Three horses that were presented with supraglenoid tubercle fractures were treated with open reduction and internal fixation using distal femoral locking plates (DFLP). Placing the DFLP caudal to the scapular spine in order to preserve the suprascapular nerve led to a stable fixation, however, it resulted in infraspinatus muscle atrophy and mild scapulohumeral joint instability (case 1). Placing the DFLP cranial to the scapular spine and under the suprascapular nerve resulted in a stable fixation, however, it resulted in severe atrophy of the supraspinatus and infraspinatus muscles and scapulohumeral joint instability (case 2).

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Objective: To determine the effect of horse age and laryngeal prosthesis location on rima glottidis area in cadaveric larynges.

Study Design: Experimental study.

Animals: Cadaveric equine larynges (n = 40).

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Objectives: To evaluate the effect of 3 laryngeal prostheses alone or in combination on rima glottidis area in horses.

Study Design: Experimental randomized design.

Sample Population: Cadaveric equine larynges (n = 22).

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Objectives: To compare the effects of manuka honey and manuka honey gel on second intention healing of noncontaminated distal limb wounds and those contaminated with feces.

Study Design: Experimental study.

Animals: Standardbred horses (n = 10).

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Objective: To determine the effect of manuka honey on second-intention healing of contaminated, full-thickness skin wounds in horses.

Study Design: Experimental.

Animals: Adult Standardbred horses (n = 8).

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Objective: To determine via histologic examination and scintigraphy the effect of focused extracorporeal shock wave therapy (ESWT) on normal bone and the bone-ligament interface in horses.

Animals: 6 horses without lameness.

Procedure: Origins of the suspensory ligament at the metacarpus (35-mm probe depth) and fourth metatarsal bone (5-mm probe depth) were treated twice (days 0 and 16) with 2,000 shocks (energy flux density, 0.

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