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thoroughpin(thûr′ō-pĭn′, thûr′ə-, thŭr′-)
An abnormal swelling on either side of the hock joint of horses and related animals.
tenosynovitis of the deep flexor tendon sheath of the hindlimb of the horse manifested by soft, nonpainful swellings just above the point of the hock and on the medial and lateral aspects of the hock. There is no lameness.