Vet Comp Orthop Traumatol 2023; 36(06): 317-323
DOI: 10.1055/s-0043-1770739
Clinical Communication

Partial Parasagittal Patellectomy in Dogs: A Retrospective Case Series of 19 Dogs

1   Christchurch Veterinary Referrals, Ipswich, United Kingdom
2   Department of Small Animal Surgery, Debenham Vets Surgical Referrals, Debenham, Suffolk, United Kingdom and Northern Ireland
3   Orthopaedics Department – Musculoskeletal Sciences, Queen's Veterinary Hospital, Cambridge, United Kingdom
› Author Affiliations


Objective The aim of this study was to describe partial parasagittal patellectomy for the surgical management of patellar luxation, including surgical technique, proposed indications, complications, and outcomes in a cohort of dogs.

Study Design This is a single-center retrospective clinical case series.

Methods Medical records (2019–2020) of dogs presenting for patellar luxation were reviewed. Clinical signs, luxation direction and grade, preoperative imaging and intraoperative findings, and complications were retrospectively retrieved. Owners were contacted via questionnaire for medium- and long-term follow-up.

Results A total of 24 stifles in 19 dogs met the inclusion criteria. Intraoperative minor complications occurred in four stifles. A single minor complication occurred postoperatively with no major complications. Increased thickness and radiographic attenuation of the patellar ligament were noted in 14 stifles at radiographic reassessment. Re-luxation was not encountered, with long-term owner-assessed outcome as good to excellent in all cases.

Conclusion Partial parasagittal patellectomy, used in conjunction with block recession trochleoplasty and tibial tuberosity transposition, provided reliable resolution of patellar luxation in canine stifles with grade 2 or 3 luxation where width mismatch between the patella and the trochlea was noted intraoperatively. Long-term outcome appears to be good to excellent with a low rate of complication.

Authors' Contribution

E.A.D., B.W.G., and M.J.A. were responsible for the study design and manuscript review.

Supplementary Material

Publication History

Received: 23 January 2022

Accepted: 24 May 2023

Article published online:
20 July 2023

© 2023. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

  • References

  • 1 Hayes AG, Boudrieau RJ, Hungerford LL. Frequency and distribution of medial and lateral patellar luxation in dogs: 124 cases (1982-1992). J Am Vet Med Assoc 1994; 205 (05) 716-720
  • 2 Putnam RW. Patellar Luxation in the Dog [thesis]. Guelph, ON: Department of Clinical Studies, University of Guelph; 1968
  • 3 DeCamp CE, Johnston SA, Déjardin LM, Schaefer SL. Brinker, Piermattei and Flo's Handbook of Small Animal Orthopedics and Fracture Repair. 5th ed. St. Louis, MO: Elsevier Saunders; 2016
  • 4 Daems R, Janssens LA, Béosier YM. Grossly apparent cartilage erosion of the patellar articular surface in dogs with congenital medial patellar luxation. Vet Comp Orthop Traumatol 2009; 22 (03) 222-224
  • 5 Alam MR, Lee JI, Kang HS. et al. Frequency and distribution of patellar luxation in dogs. 134 cases (2000 to 2005). Vet Comp Orthop Traumatol 2007; 20 (01) 59-64
  • 6 Wangdee C, Hazewinkel HA, Temwichitr J, Theyse LF. Extended proximal trochleoplasty for the correction of bidirectional patellar luxation in seven Pomeranian dogs. J Small Anim Pract 2015; 56 (02) 130-133
  • 7 Cashmore RG, Havlicek M, Perkins NR. et al. Major complications and risk factors associated with surgical correction of congenital medial patellar luxation in 124 dogs. Vet Comp Orthop Traumatol 2014; 27 (04) 263-270
  • 8 Arthurs GI, Langley-Hobbs SJ. Complications associated with corrective surgery for patellar luxation in 109 dogs. Vet Surg 2006; 35 (06) 559-566
  • 9 Rossanese M, German AJ, Comerford E, Pettitt R, Tomlinson A, de Vicente F. Complications following surgical correction of medial patellar luxation in small-to-medium-size dogs. Vet Comp Orthop Traumatol 2019; 32 (04) 332-340
  • 10 Gibbons SE, Macias C, Tonzing MA, Pinchbeck GL, McKee WM. Patellar luxation in 70 large breed dogs. J Small Anim Pract 2006; 47 (01) 3-9
  • 11 Gallegos J, Unis M, Roush JK, Agulian L. Postoperative complications and short-term outcome following single-session bilateral corrective surgery for medial patellar luxation in dogs weighing <15 kg: 50 cases (2009-2014). Vet Surg 2016; 45 (07) 887-892
  • 12 Bosio F, Bufalari A, Peirone B, Petazzoni M, Vezzoni A. Prevalence, treatment and outcome of patellar luxation in dogs in Italy. A retrospective multicentric study (2009-2014). Vet Comp Orthop Traumatol 2017; 30 (05) 364-370
  • 13 Stanke NJ, Stephenson N, Hayashi K. Retrospective risk factor assessment for complication following tibial tuberosity transposition in 137 canine stifles with medial patellar luxation. Can Vet J 2014; 55 (04) 349-356
  • 14 Johnson AL, Probst CW, Decamp CE. et al. Comparison of trochlear block recession and trochlear wedge recession for canine patellar luxation using a cadaver model. Vet Surg 2001; 30 (02) 140-150
  • 15 Arthurs GI, Langley-Hobbs SJ. Patellar luxation as a complication of surgical intervention for the management of cranial cruciate ligament rupture in dogs. A retrospective study of 32 cases. Vet Comp Orthop Traumatol 2007; 20 (03) 204-210
  • 16 Rutherford L, Arthurs GI. Partial parasagittal patellectomy: a novel method for augmenting surgical correction of patellar luxation in four cats. J Feline Med Surg 2014; 16 (08) 689-694
  • 17 Talcott KW, Goring RL, De Haan JJ. Rectangular recession trochleoplasty for treatment of patellar luxation in dogs and cats. Vet Comp Orthop Traumatol 2000; 13 (01) 39-43
  • 18 Vezzoni A. Patelloplasty. Extract presented at: European Society of Veterinary Orthopaedics and Traumatology; October 20–22, 2011; Lyon, France
  • 19 Cook JL, Evans R, Conzemius MG. et al. Proposed definitions and criteria for reporting time frame, outcome, and complications for clinical orthopedic studies in veterinary medicine. Vet Surg 2010; 39 (08) 905-908
  • 20 DeAngelis M, Hohn RB. Evaluation of surgical correction of canine patellar luxation in 142 cases. J Am Vet Med Assoc 1970; 156 (05) 587-594
  • 21 Di Dona F, Della Valle G, Fatone G. Patellar luxation in dogs. Vet Med (Auckl) 2018; 9: 23-32
  • 22 Brioschi V, Rutherford L, Newell K, Trotter C, Arthurs GI. Computed tomographic assessment of block recession trochleoplasty and partial parasagittal patellectomy in cats. Vet Comp Orthop Traumatol 2020; 33 (02) 102-109
  • 23 Abercromby R, Coughlan A, Miller A. Patella and fabellae. In: Coughlan A, Miller A. eds. BSAVA Manual of Small Animal Fracture Repair and Management. Quedgeley, UK: British Small Animal Veterinary Association; 1998: 293-301
  • 24 Hamish R, Butterworth S. A Guide to Canine and Feline Orthopaedic Surgery. 4th ed. Philadelphia, PA: WB Saunders; 2000: 512-553
  • 25 Vasseur PB. The stifle joint. In: Slatter DH. ed. Textbook of Small Animal Surgery. 2nd ed. Philadelphia, PA: WB Saunders; 1993: 1817-1866
  • 26 Arnoczky S, Tarvin G. Surgery of the stifle: the patella (part II). Compend Contin Educ Pract Vet 1980; 2: 200-207
  • 27 Harari J, Person M, Berardi C. Fractures of the patella in dogs and cats. Compend Contin Educ Pract Vet 1990; 12 (11) 1557-1562
  • 28 Bright SR, May C. Arthroscopic partial patellectomy in a dog. J Small Anim Pract 2011; 52 (03) 168-171
  • 29 Pandey AK, Pandey S, Pandey P. Results of partial patellectomy. Arch Orthop Trauma Surg 1991; 110 (05) 246-249