What does the TFCC attach to?
Two thick ligamentous structures border the triangular fibrocartilage disc proper in its dorsal and volar aspect. These are the dorsal and volar radioulnar ligaments (RUL). [1] While they attach directly to the radius bone, the triangular fibrocartilage disc proper attaches into hyaline cartilage.
How do you perform a fovea test?
The ulnar fovea sign test is executed by pressing the examiner’s thumb distally into the interval between the ulnar styloid process and flexor carpi ulnaris tendon, between the volar surface of the ulnar head and the pisiform.
How do you treat a TFCC injury?
How is a TFCC tear treated?
- Medication: Anti-inflammatory medications (such as NSAIDs) can help reduce swelling and relieve pain.
- Bracing: Keeping your forearm and wrist stable with a brace or splint can allow your TFCC to heal.
- Injections: Cortisone shots help reduce the swelling of torn tissue.
What causes TFCC tear?
What causes a TFCC tear? There are two types of TFCC tears: traumatic and degenerative. Traumatic tears typically result from falling on an outstretched hand, excessive arm rotation or a blow to the wrist. Athletes are at risk, especially those who use a racquet, bat or club or put pressure on the wrists.
What is the ulnar fovea?
The ulnar fovea sign is a clinical test used to specify the cause of ulnar-sided wrist pain. A positive ulnar fovea sign test is indicative of foveal disruption of the distal radioulnar ligaments and ulnotriquetral ligament injuries.
Where is the fovea wrist?
The fovea lies between the ulnar styloid (us) process and the flexor carpi ulnaris (fcu) tendon. Distally, it is bounded by the pisiform (p) bone and proximally by the volar surface of the ulnar head, which in this photo is under the examiner’s index finger pulp.
What is foveal disruption?
Foveal ligament disruption, in which the whole ligament complex unattaches from the ulna, is most often caused by high torque injuries from skiing or falls. Split tears may be from lower energy, repetitive torque injuries such as from bowling or golf, Dr. Berger speculated.
What happens if you don’t treat a TFCC tear?
Triangular fibrocartilage complex injury (TFCC) complications. If left untreated, a complete tear will lead to persistent instability.
What is fovea function?
The fovea is responsible for sharp central vision (also called foveal vision), which is necessary in humans for activities for which visual detail is of primary importance, such as reading and driving. The fovea is surrounded by the parafovea belt and the perifovea outer region.
What happens when the foveal attachment is avulsed?
If the foveal attachment is avulsed, it translates distally. The footprint is separated from its origin and will become covered in synovitis, preventing healing. The authors describe a surgical technique for the treatment of instability of the DRUJ due to chronic foveal detachment of the TFCC.
What is the structure of the fovea?
Structure. The fovea is located in a small avascular zone and receives most of its oxygen from the vessels in the choroid, which is across the retinal pigment epithelium and Bruch’s membrane. The high spatial density of cones along with the absence of blood vessels at the fovea accounts for the high visual acuity capability at the fovea.
Where is the fovea located on the forearm?
The fovea is situated between the ulnar styloid process and the flexor carpi ulnaris tendon. Ligamentous structures in the fovea region when the forearm is in a neutral position form the foveal attachments of the conjoined palmar and dorsal radioulnar ligaments and the ulnocarpal ligaments.
How is a TFCC foveal detachment diagnosed?
The TFCC foveal detachment is confirmed by the positive hook test. Direct visualization of fovea through DRUJ portal has been suggested and can be utilized. A skin incision is made along the ulnar border of the distal ulna. The subcutaneous tissue is carefully dissected protecting the superficial ulnar nerve branches.