Peripheral neuropathy of a forelimb in horses: 27 cases (2000-2013).

The research study presents an analysis of the clinical features, diagnostic procedures, management, and outcome of horses affected by peripheral neuropathy of a forelimb. It reveals that most horses with this condition, following adequate rest, regained athletic soundness. Yet, the recovery time varied depending on the nerve predominantly affected.

Study Design and Methodology

• The study is designed as a retrospective case series which involved the analysis of records from 2000 to 2013.
• Data of 27 horses suffering from peripheral neuropathy of a forelimb was analysed.
• The data was categorized based on the predominant lesions in a suprascapular nerve, axillary nerve, or radial nerve.
• This categorization was done based on physical examination and diagnostic imaging findings.
• Most horses were treated using conservative methods.
• Variables assessed for each case include signalment (species, sex, age), history, lameness characteristics, diagnostic imaging features, case management, and outcomes.

Study Findings

• Findings revealed 11 horses with predominant lesions of a suprascapular nerve, 2 with predominant lesions in the axillary nerve, and 14 horses identified with lesions in the radial nerve.
• Upon recovery, eight horses with predominant suprascapular nerve injury and nine with injury to a radial nerve alone or in concert with other nerves were able to return to their previous activity levels; these recoveries occurred after mean periods of 9.3 and 13.3 months respectively.
• Meanwhile, the two horses with a predominant axillary nerve injury had a mean recovery period of 3.5 months before they could return to their previous activity level.
• The research also noted the effectiveness of ultrasonography in the evaluation stage of muscle atrophy and rehabilitation, assisting in treatment and management.

Conclusions and Clinical Implications

• Most horses diagnosed with peripheral neuropathy of a forelimb returned to athletic soundness following an adequate rest period.
• Yet, those horses with lesions of a radial nerve either alone or in association with other nerves generally required longer recovery times than those with predominant injuries of a suprascapular nerve.
• This finding suggests that the type and location of nerve injury may significantly influence recovery timeframes in horses with peripheral neuropathy.