Vet Comp Orthop Traumatol 2019; 32(03): 250-256
DOI: 10.1055/s-0039-1683389
Clinical Communication
Georg Thieme Verlag KG Stuttgart · New York

Lateral Radial Head Subluxation as a Complication Following Proximal Ulnar Osteotomy or Ostectomy in Eight Dogs

Heather Williams
1  Queen Mother Hospital for Animals, RVC, North Mymms, Hertfordshire, United Kingdom
Gareth Arthurs
2  Arthurs Orthopaedics, Cambridge, United Kingdom
Neil Burton
3  Wear Referrals Veterinary Hospital, Bradbury, Stockton-on-Tees, United Kingdom
Elvin Kulendra
4  North Downs Specialist Referrals, Bletchingley, United Kingdom
Heidi Radke
5  The Queen’s Veterinary School Hospital, Madingley Road, Cambridge, United Kingdom
Kevin Parsons
6  Langford Veterinary Services Small Animal Referral Hospital, University of Bristol, Langford House, Langford, Bristol, United Kingdom
› Author Affiliations
Funding There is no grant or other financial support to disclose.
Further Information

Publication History

21 March 2018

08 January 2019

Publication Date:
28 March 2019 (eFirst)


Objectives The aim of this study was to report the complication of lateral radial head subluxation following proximal ulnar osteotomy (PUOO) or proximal ulnar ostectomy (PUOE) in eight dogs.

Materials and Methods Case records and diagnostic imaging of dogs developing lateral radial head subluxation following PUOO (n = 7) or PUOE (n = 2) were retrospectively reviewed. Information pertaining to clinical history, signalment, presenting condition, lameness grade, diagnostic imaging and initial surgery details, postoperative complications and their management were retrieved. Outcomes were established from subsequent clinical histories or telephone interviews with referring veterinarians. Comparison was made to a single-centre cohort without lateral radial head subluxation following PUOO or PUOE.

Results Eight dogs (median age: 9.5 months [range: 6 months–6 years], median weight 7.7 kg [range: 5–28 kg]) were included. Six dogs had a PUOO performed; five dogs had unilateral surgery and one had bilateral surgery. Two dogs had unilateral PUOE surgery. Median time to diagnosis of lateral radial head subluxation following surgery was 6.5 weeks (range: 2–20 weeks). Five of the eight dogs had surgical revision of lateral radial head subluxation. Resolution of lateral radial head subluxation was achieved in four dogs, with three achieving acceptable to good mobility. One dog had poor postoperative mobility. A fifth dog remained lame after revision surgery failure. Three dogs did not have revision surgery; two underwent limb amputation and one dog remained lame as revision surgery was declined.

Clinical Significance Lateral radial head subluxation is a potentially severe postoperative complication following PUOO or PUOE.

Author Contribution

Heather Williams, Gareth Arthurs, Neil Burton, Elvin Kulendra and Kevin Parsons contributed to acquisition of data and data analysis and interpretation. H. Radke contributed to acquisition of data. G. Arthurs and K. Parsons also contributed to conception of study and study design. All authors drafted, revised and approved the submitted manuscript.

Supplementary Material