Glenoid dysplasia and bicipital tenosynovitis in a Maine coon cat

Abstract

This report describes a rare case of bicipital tenosynovitis in a Maine coon cat. The cat, a three-and-half-year-old neutered female, presented with chronic weightbearing lameness of the left forelimb. Flexion of the left glenohumeral joint and extension of the left cubital joint were resented, and palpation of the biceps brachii tendon in the bicipital groove elicited pain. A mild incongruity of the joint with mild degenerative changes was seen radiographically. Glenohumeral joint dysplasia was suspected. Ultrasound examination revealed marked thickening of the bicipital tendon and moderate effusion of the left bicipital tendon sheath. Positive contrast radiography of the joint confirmed dilation of the tendon sheath. A tentative diagnosis of bicipital tenosynovitis was made and confirmed on arthrotomy. Surgical removal of osteophytes resulted in the cat being free from pain but a mild lameness recurred six months after surgery.

Osseous Metaplasia of the Transverse Humeral Ligament in a 10-Year-Old Bengal Cat

“…9 In cats, it is only described in one case report and was believed to be secondary to increased joint laxity associated with glenohumeral dysplasia and incongruity. 10 In the case we present here, bicipital tenosynovitis revealed to be the cause of lameness as confirmed by the inflammation of the tendon on ultrasonographic assessment. This was presumed to be secondary to chronic chafing against the osseous bridge during multidirectional movements such as jumping, playing and climbing as demonstrated by the clinical improvement after removal of the osseous bridge.…”

Feline shoulder arthroscopy using a caudolateral portal, a cadaveric study

“…The two earliest reports involved extensive trauma (1, 2), and so it is unlikely that arthroscopy would have made a significant difference to the management of these cases. In the case reported by Peterson (3), arthroscopy could have provided a less invasive way to manage the lesion of the humeral head, and in the case reported by Scharf et al (6), investigation of the bicipital groove could also have been achieved arthroscopically. The usual placement of the arthroscope in the canine shoulder is distal to the tip of the acromion (11), however in the feline patient, the portal cannot be placed distal to the acromion because the acromion overhangs the proximal humerus when the shoulder is in a neutral position (no adduction or abduction).…”

“…Shoulder injuries and disease have been reported in the cat (1)(2)(3)(4)(5)(6) but are rare by comparison with the dog (4,5,(7)(8)(9)(10). Arthroscopy has become the reference standard for investigation of canine shoulder pathology (4,5,7,(9)(10)(11) and although arthroscopy of the feline shoulder has been mentioned (4, 5) a systematic arthroscopic examination of the feline shoulder has, to the author's knowledge, not yet been published.…”