Zann et al: Long‐term outcome of dogs treated by surgical debridement of proximal humeral osteochondrosis
Veterinary Surgery 6, 2023

All surgically treated shoulders developed osteoarthritis, confirmed on radiographs and CT (P = .0001, P = .005).
Ipsilateral muscle atrophy (↓ brachial circumference, P = .003) and decreased shoulder ROM were common long-term findings.
Cartilage infilling remained incomplete in all joints on arthroscopy, with median infilling of 37.4% up to 8.9 years post-op.
Moderate-to-severe synovitis was noted in all OC-affected joints via arthroscopy.
Despite clinical abnormalities, no significant difference in peak vertical force or impulse was found between affected and unaffected limbs.
Radiographs underestimated lesion size compared to CT (P = .001 for width, P = .038 for depth).
Owner-assessed mobility remained satisfactory, with median LOAD score = 6 (“mild” disability).
Study underscores progression of OA is likely, but clinical relevance may be low in many cases.

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All surgically treated shoulders developed osteoarthritis, confirmed on radiographs and CT (P = .0001, P = .005).
Ipsilateral muscle atrophy (↓ brachial circumference, P = .003) and decreased shoulder ROM were common long-term findings.
Cartilage infilling remained incomplete in all joints on arthroscopy, with median infilling of 37.4% up to 8.9 years post-op.
Moderate-to-severe synovitis was noted in all OC-affected joints via arthroscopy.
Despite clinical abnormalities, no significant difference in peak vertical force or impulse was found between affected and unaffected limbs.
Radiographs underestimated lesion size compared to CT (P = .001 for width, P = .038 for depth).
Owner-assessed mobility remained satisfactory, with median LOAD score = 6 (“mild” disability).
Study underscores progression of OA is likely, but clinical relevance may be low in many cases.