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Table 2 Description of the study population of 43 horses with osteoarthritis of a metacarpo(tarso)phalangeal joint or carpal joint treated by intra-articular administration of a polyacrylamide hydrogel and variables evaluated during a 24 months follow-up

From: An international multi-centre prospective study on the efficacy of an intraarticular polyacrylamide hydrogel in horses with osteoarthritis: a 24 months follow-up

Variable Data
Horses (no.) 43
Mean (range) age (years) 9.4 (2–15)
Breeds (no. (%))  
  Warmbloods 30 (70%)
  Racing breeds 8 (19%)
  Others 5 (11%)
Horse activity (no. (%))  
  Dressage 15 (35%)
  Jumping 13 (30%)
  Racing 8 (19%)
  Other 7 (16%)
Limb involved (no. (%))  
  Front 27 (63%)
  Hind 16 (27%)
Joint involved (no. (%))  
  Metacarpo(metatarso)phalangeal 40 (93%)
  Antebrachiocarpal, Middle carpal, Carpometacarpal 3 (7%)
Lameness duration before treatment (no. (%))  
  1–6 months 35 (81%)
  >6 months 8 (19%)
Previous anti-osteoarthritic therapy  
  Yes 37 (86%)
  No 6 (14%)
Lameness grading at baseline (no. (%))  
  1 11 (26%)
  2 14 (32%)
  3 15 (35%)
  4 3 (7%)
Joint effusion grading at baseline (no. (%))  
  0 3 (7%)
  1 10 (23%)
  2 18 (42%)
  3 7 (16%)
  4 5 (12%)
Joint effusion grading at 24 months (no. (%))  
  0 31 (77.5%)
  1 8 (20%)
  2 0 (0%)
  3 1 (2.5%)
  4 0 (0%)
Radiographic grading of OA at baseline (no. (%))  
  1 (mild) 23 (53%)
  2 (moderate) 9 (21%)
  3 (marked) 11 (26%)
Proportion of non-lame horses at (%)  
  1 month 60%
  3 months 67%
  6 months 79%
  12 months 81%
  24 months 82.5%
Owner satisfaction at 24 months (%)  
  Not satisfied 2.5%
  Slightly satisfied 7.5%
  Satisfied 15%
  Very satisfied 75%
  1. OA: osteoarthritis.