Intraosseous tophus deposits in the os trigonum.

06:00 EST 11th January 2012 | BioPortfolio

Summary of "Intraosseous tophus deposits in the os trigonum."

High levels of uric acid cause accumulation of monosodium urate crystals. This formation of masses is called tophus. Intraosseous tophus deposits are rare, even for patients with gout. We report an unusual case of intraosseous tophus deposits in the os trigonum. The patient presented with ankle pain with no previous history of gout. On examination, tenderness on the posterior aspect of his ankle and limitation of plantarflexion was noted. Laboratory values were normal, except for an elevated serum uric acid value. Radiographs of the right ankle showed the presence of a large os trigonum with osteosclerotic changes, whereas magnetic resonance imaging showed intraosseous tophus deposits in the os trigonum. Conservative therapy failed, and the patient was admitted for an endoscopic resection of the os trigonum.Intraosseous chalky crystals were detected during endoscopic resection of the os trigonum. The histological diagnosis was tophaceous gout. The underlying pathological mechanism of intraosseous tophi is uncertain. Penetration of urate crystals from the joint due to hyperuricemia may be the mechanism of deposition in this patient.When a patient with hyperuricemia presents with posterior ankle impingement symptoms, intraosseous tophus deposits should be included in the differential diagnosis. Posterior endoscopic excision may be an option for treating intraosseous lesions of the os trigonum because of good visualization, satisfactory excision, and rapid recovery time.


Journal Details

This article was published in the following journal.

Name: Orthopedics
ISSN: 1938-2367
Pages: e120-3


PubMed Articles [283 Associated PubMed Articles listed on BioPortfolio]

Biomechanics of a novel technique for suprapectoral intraosseous biceps tenodesis.

The Caspari-Weber (C.W.) tenodesis is a standard miniopen intraosseous technique to fix the long head of the biceps tendon. The suprapectoral intraosseous biceps tenodesis (SPIBiT) is a novel arthrosc...

Intraosseous cavernous haemangioma of the inferior turbinate.

Intraosseous cavernous haemangiomas usually occur in the vertebral and calvarial bones, and account for

Transarterial N-Butyl-2-cyanoacrylate Embolization of an Intraosseous Dural Arteriovenous Fistula Associated With Acute Epidural Hematoma: Case Report.

Intraosseous dural arteriovenous fistulae (DAVF) are rare, especially those with drainage into the diploic venous system. The clinical presentation depends on the location of the lesion. This is the f...

Intraosseous Hemangioma of the Middle Turbinate: A Case Report of a Rare Entity and Literature Review.

Intraosseous hemangiomas arising from the nasal turbinate are exceedingly rare, with few reported cases in the literature. We describe a 61-year-old man found to have a nasal cavity mass on sinus comp...

Does Topical Anesthetic Reduce Pain During Intraosseous Pin Removal in Children? A Randomized Controlled Trial.

The purpose of this study was to determine the effectiveness of topical liposomal lidocaine in reducing the pain perceived by children undergoing percutaneous intraosseous pin (PP) removal in the outp...

Clinical Trials [55 Associated Clinical Trials listed on BioPortfolio]

Intraosseous Access

The investigators will compare the success rates and time to successful IO access during simulated adult resuscitation.

Intraosseous Infusion of Unrelated Cord Blood Grafts

In this trial the investigators seek to determine if injecting cord blood cells directly into the bone marrow (intraosseous injection), rather than infusing them intravenously, can improve...

Intraosseous Transcutaneous Amputation Prosthesis

Direct Skeletal Fixation of Prosthetic Limbs Following Trans-Femoral Amputation - Study of an Intraosseous Transcutaneous Amputation Prosthesis (ITAPTM).

EZIO Compared to Central Venous Lines for Emergency Vascular Access

Multicenter randomized study to compare powered intraosseous access to standard central line access for the administration of fluids and drugs for patients in the Emergency Dept.

Evaluation of Deposits on Contact Lenses Worn Daily Wear

To measure deposits on lenses worn 10 hours.

Medical and Biotech [MESH] Definitions

The administration of medication or fluid through a needle directly into the bone marrow. The technique is especially useful in the management of pediatric emergencies when intravenous access to the systemic circulation is difficult.

A chronic form of glomerulonephritis characterized by deposits of predominantly IMMUNOGLOBULIN A in the mesangial area (GLOMERULAR MESANGIUM). Deposits of COMPLEMENT C3 and IMMUNOGLOBULIN G are also often found. Clinical features may progress from asymptomatic HEMATURIA to END-STAGE KIDNEY DISEASE.

A group of sporadic, familial and/or inherited, degenerative, and infectious disease processes, linked by the common theme of abnormal protein folding and deposition of AMYLOID. As the amyloid deposits enlarge they displace normal tissue structures, causing disruption of function. Various signs and symptoms depend on the location and size of the deposits.

A type of glomerulonephritis that is characterized by the accumulation of immune deposits (COMPLEMENT MEMBRANE ATTACK COMPLEX) on the outer aspect of the GLOMERULAR BASEMENT MEMBRANE. It progresses from subepithelial dense deposits, to basement membrane reaction and eventual thickening of the basement membrane.

Deposits of ADIPOSE TISSUE throughout the body. The pattern of fat deposits in the body regions is an indicator of health status. Excess ABDOMINAL FAT increases health risks more than excess fat around the hips or thighs, therefore, WAIST-HIP RATIO is often used to determine health risks.


Relevant Topics

According to the National Arthritis Data Workgroup, an estimated 6 million people in the United States report having experienced gout at some point in their lives. In fact, gout is the most common form of inflammatory arthritis in men over the age of 40....

Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...

Searches Linking to this Article