Sciatic neurapraxia as a complication in 1000 consecutive canine total hip replacements.
OBJECTIVE
To report the frequency of sciatic neurapraxia (SN) associated with total hip replacement (THR), to determine outcome (recovery rate) after SN associated with THR, and to identify potential causes of THR-associated SN in dogs.


METHODS
Prospective study.


METHODS
Dogs (n=786; 1000 hips) that had THR.


METHODS
Logistic regression was used to determine the association with post-THR SN of the variables age, sex, breed, weight, body condition score, severity of presurgical pain, side (right, left), type of prosthesis fixation (cemented, cementless), duration of surgery, surgeon experience (chronologic order), traumatic presurgical luxation, and primary versus revision arthroplasty.


RESULTS
The frequency of SN after THR was 19/1000 (1.9%). Two explanatory variables, age at surgery and duration of surgery, were significantly (P<.05) associated with increased probability of SN. Body weight (P=.09), traumatic presurgical luxation (P=.11), and revision versus primary surgery (P=.11) were marginally associated with increased probability of SN. All dogs with SN recovered fully.


CONCLUSIONS
SN after THR is not uncommon and complete recovery usually occurs although the recovery time is highly variable.


CONCLUSIONS
Although SN associated with THR typically resolves, surgeons should avoid iatrogenic sciatic nerve injury during THR.
Andrews
Chad M
CM
Gulf Coast Veterinary Specialists, Houston, TX 77027, USA. cmavet2005@hotmail.com
Liska
William D
WD
Roberts
Darryl J
DJ
D000367:Age Factors; D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000662:veterinary*; D001843:Bone Cements; D004283:Dog Diseases / Q000453:epidemiology* / Q000473:pathology / Q000601:surgery; D004285:Dogs; D005260:Female; D006619:Hip Dysplasia, Canine / Q000601:surgery*; D006622:Hip Prosthesis / Q000662:veterinary; D016015:Logistic Models; D008297:Male; D011183:Postoperative Complications / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D011379:Prognosis; D011446:Prospective Studies; D012307:Risk Factors; D012584:Sciatic Nerve; D020426:Sciatic Neuropathy / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome
D001843:Bone Cements