Total Hip Replacement with Dorsal Acetabular Rim Augmentation Using the SOPTM Implant and Polymethylmethacrylate Cement in Seven Dogs with Dorsal Acetabular Rim Deficiency

Publication date 1st February 2011
Authors Noel Fitzpatrick, Malgorzata Bielecki, Russell Yeadon, Michael Hamilton


To describe a surgical technique for reinforced augmentation of the dorsal acetabular rim (DAR) using a string-of-pearls (SOPTM) locking plate and polymethylmethacrylate (PMMA) bone cement, and to report clinical outcome in 7 dogs.

Study design

Case series.




Medical records (November 2009–April 2010) of 7 dogs with large DAR deficits, that had total hip replacement (THR) with reinforced augmenta- tion of the DAR using a SOPTM plate and PMMA were evaluated retrospectively. Reinforced augmentation of the DAR involved anchorage of a precontoured 2.0 or 2.7mm SOPTM plate dorsal to the acetabulum followed by application of PMMA cement to cover the reamed acetabulum and plate. Cemented acetabular components were used. Implant associated complications were recorded and Z6-month follow-up obtained.


In all dogs, lameness improved at medium-term reassessment (median, 8 months; range, 6–11 months). Complications included transient sciatic neurapraxia in 2 dogs, which resolved by 3 months.


Reinforced augmentation of the DAR using a SOPTM plate and PMMA cement may facilitate placement of acetabular THR component implan- tation in dogs with severe DAR insufficiency.