Two adult warmblood horses with a history of chronic hind limb lameness originating from the prox... more Two adult warmblood horses with a history of chronic hind limb lameness originating from the proximal interphalangeal joint (PIPJ) were presented at the equine hospital De Bosdreef (Belgium) between 2016 and 2017. Based on the case history and orthopedic examination, chronic osteoarthrosis (OA) of the PIPJ was diagnosed in both horses. A modified surgical arthrodesis of the PIPJ was performed using a central dorsal three-hole proximal interphalangeal locking compression plate (PIP plate) and four 5.5 mm transarticular cortical screws placed in a lag fashion (TCS-LF). The procedure resulted in an early bone bridging of the PIPJ and a return of the horses to the intended use within ten months after the surgery.
This study evaluated the Etest for direct antimicrobial susceptibility testing (AST) of bacteria ... more This study evaluated the Etest for direct antimicrobial susceptibility testing (AST) of bacteria from equine synovial specimens, incubated in BACTEC enrichment bottles. Ninety-four culture-positive broths were inoculated onto agar to directly determine the minimum inhibitory concentrations (MICs) of 13 antimicrobials, using the Etest (direct Etest). Results were compared with those obtained with the agar dilution reference method, the standard Etest, and the disc diffusion method, after subculture and standardisation of the inoculum. For categorical comparison of AST results, MICs were translated into susceptibility categories, using clinical breakpoints. The direct Etest predicted categorical susceptibility/resistance of bacteria from equine synovial fluid with acceptable accuracy (overall categorical agreement, 91%) and was more reliable than the disc diffusion test. The direct Etest was less accurate than the standard Etest for generating MICs ± 1 log dilution relative to the ref...
BACKGROUND Indirect inguinal herniation (IIH) is a potentially life-threatening condition in stal... more BACKGROUND Indirect inguinal herniation (IIH) is a potentially life-threatening condition in stallions. The ideal preventive measure for breeding stallions ensures a minimally invasive closure of the vaginal ring that avoids recurrence of IIH while preserving both testicles. OBJECTIVES To describe a minimally invasive laparoscopic tacked intra-peritoneal slitted mesh (TISM) technique in the standing horse to close the vaginal rings and to evaluate its efficacy in preventing recurrence of IIH in stallions. STUDY DESIGN Retrospective case series. METHODS Medical records of 17 stallions with a history of IIH were reviewed retrospectively. The surgical procedure was performed on the standing horse through a flank approach using 4 laparoscopic portals. The vaginal ring was covered with a commercial mesh. The mesh was partially cut to create a slitted mesh with two flaps: the dorsal flap was passed under the spermatic cord and ductus deferens and the ventral flap above. The mesh was secured in place with laparoscopic tacks. Long-term follow up was obtained by a structured telephone interview of the owners. RESULTS A total of 32 laparoscopic vaginal rings closures were successfully performed in 17 horses. No major intra- or postoperative complications occurred. None of the horse suffered from re-occurrence. Nine of the 13 active breeding stallions were breeding again with similar semen quality as before treatment, 4/13 will resume their breeding activity during the next breeding season. None of the horses were castrated and none of the owners reported abnormal size or shape of the testicles. In 3 stallions, post-operative pain and activity limitations were noted that gradually resolved after 6 months. MAIN LIMITATIONS The lack of large numbers to compare the results of different mesh and tack combinations, the lack of follow up veterinary examinations and the limited number of laparoscopic rechecks. CONCLUSION The TISM technique is an effective minimally invasive technique to surgically reduce the size of the vaginal ring and thereby prevent recurrence of IIH.
Six of eight horses with caecocolic intussusception were treated successfully by jejuno- or ileoc... more Six of eight horses with caecocolic intussusception were treated successfully by jejuno- or ileocolostomy. The other two horses were euthanased during surgery. Four of the six horses survived long term, but two died within two-and-a-half months, of problems related to the surgery. Compared with other techniques for treating caecocolic intussusception, jejuno- or ileocolostomy reduces surgical time and decreases the risk of abdominal contamination.
Two adult warmblood horses with a history of chronic hind limb lameness originating from the prox... more Two adult warmblood horses with a history of chronic hind limb lameness originating from the proximal interphalangeal joint (PIPJ) were presented at the equine hospital De Bosdreef (Belgium) between 2016 and 2017. Based on the case history and orthopedic examination, chronic osteoarthrosis (OA) of the PIPJ was diagnosed in both horses. A modified surgical arthrodesis of the PIPJ was performed using a central dorsal three-hole proximal interphalangeal locking compression plate (PIP plate) and four 5.5 mm transarticular cortical screws placed in a lag fashion (TCS-LF). The procedure resulted in an early bone bridging of the PIPJ and a return of the horses to the intended use within ten months after the surgery.
This study evaluated the Etest for direct antimicrobial susceptibility testing (AST) of bacteria ... more This study evaluated the Etest for direct antimicrobial susceptibility testing (AST) of bacteria from equine synovial specimens, incubated in BACTEC enrichment bottles. Ninety-four culture-positive broths were inoculated onto agar to directly determine the minimum inhibitory concentrations (MICs) of 13 antimicrobials, using the Etest (direct Etest). Results were compared with those obtained with the agar dilution reference method, the standard Etest, and the disc diffusion method, after subculture and standardisation of the inoculum. For categorical comparison of AST results, MICs were translated into susceptibility categories, using clinical breakpoints. The direct Etest predicted categorical susceptibility/resistance of bacteria from equine synovial fluid with acceptable accuracy (overall categorical agreement, 91%) and was more reliable than the disc diffusion test. The direct Etest was less accurate than the standard Etest for generating MICs ± 1 log dilution relative to the ref...
BACKGROUND Indirect inguinal herniation (IIH) is a potentially life-threatening condition in stal... more BACKGROUND Indirect inguinal herniation (IIH) is a potentially life-threatening condition in stallions. The ideal preventive measure for breeding stallions ensures a minimally invasive closure of the vaginal ring that avoids recurrence of IIH while preserving both testicles. OBJECTIVES To describe a minimally invasive laparoscopic tacked intra-peritoneal slitted mesh (TISM) technique in the standing horse to close the vaginal rings and to evaluate its efficacy in preventing recurrence of IIH in stallions. STUDY DESIGN Retrospective case series. METHODS Medical records of 17 stallions with a history of IIH were reviewed retrospectively. The surgical procedure was performed on the standing horse through a flank approach using 4 laparoscopic portals. The vaginal ring was covered with a commercial mesh. The mesh was partially cut to create a slitted mesh with two flaps: the dorsal flap was passed under the spermatic cord and ductus deferens and the ventral flap above. The mesh was secured in place with laparoscopic tacks. Long-term follow up was obtained by a structured telephone interview of the owners. RESULTS A total of 32 laparoscopic vaginal rings closures were successfully performed in 17 horses. No major intra- or postoperative complications occurred. None of the horse suffered from re-occurrence. Nine of the 13 active breeding stallions were breeding again with similar semen quality as before treatment, 4/13 will resume their breeding activity during the next breeding season. None of the horses were castrated and none of the owners reported abnormal size or shape of the testicles. In 3 stallions, post-operative pain and activity limitations were noted that gradually resolved after 6 months. MAIN LIMITATIONS The lack of large numbers to compare the results of different mesh and tack combinations, the lack of follow up veterinary examinations and the limited number of laparoscopic rechecks. CONCLUSION The TISM technique is an effective minimally invasive technique to surgically reduce the size of the vaginal ring and thereby prevent recurrence of IIH.
Six of eight horses with caecocolic intussusception were treated successfully by jejuno- or ileoc... more Six of eight horses with caecocolic intussusception were treated successfully by jejuno- or ileocolostomy. The other two horses were euthanased during surgery. Four of the six horses survived long term, but two died within two-and-a-half months, of problems related to the surgery. Compared with other techniques for treating caecocolic intussusception, jejuno- or ileocolostomy reduces surgical time and decreases the risk of abdominal contamination.
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Papers by H. Wilderjans