Hand-assisted laparoscopic ovariectomy and colpotomy in standing mares.
Authors: Smith Shasta E, Devine Dustin V
Journal: Veterinary surgery : VS
Summary
# Hand-assisted laparoscopic ovariectomy in standing mares: a practical technique for bilateral removal Bilateral ovariectomy offers advantages over traditional spaying in mares—notably eliminating oestrous behaviour whilst avoiding the complications associated with hysterectomy—yet conventional laparoscopic approaches can be technically demanding. Smith and Devine's 2013 case series evaluated the feasibility of hand-assisted laparoscopic ovariectomy via colpotomy in 21 standing mares (aged 2–21 years, 312–582 kg), after establishing the technique in a pilot group of six animals. Using two laparoscopic portals placed in the left paralumbar fossa, the surgeons identified both ovaries and secured the ovarian pedicles using either LigaSure Atlas or chain écraseur, with the assistant retrieving the organs through a colpotomy; in 19 of 21 mares both ovaries were accessible from the left side, whilst two required additional right-flank portals due to instrument reach limitations. This hand-assisted approach proved technically feasible, safe and effective across the cohort, offering practitioners an alternative to conventional two-portal techniques that may reduce operative time and improve access in smaller to average-sized mares, though surgeons should anticipate the need for additional portals in larger animals or those with anatomical variation.
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Practical Takeaways
- •Hand-assisted laparoscopic ovariectomy via colpotomy is a viable standing procedure for bilateral ovariectomy in mares, potentially reducing recovery time compared to recumbent surgery
- •Most mares can be managed with left-sided portals only, but equipment reach limitations may require right-sided portals in some cases, particularly larger mares
- •This technique combines minimally invasive laparoscopy with natural body cavity access, offering technical feasibility and safety for routine ovariectomy cases
Key Findings
- •Hand-assisted laparoscopic ovariectomy via colpotomy successfully completed in 21 standing mares aged 2-21 years weighing 312-582 kg
- •Bilateral ovaries were accessible from left-sided portals in 19/21 mares (90.5%); 2 mares required right-sided portals due to equipment reach limitations
- •Technique achieved successful hemostasis using LigaSure Atlas or chain écraseur with ovarian removal through colpotomy