TFCC & Anatomy
This structure is the primary stabilizer of the DRUJ.
the TFCC
This test has ~95–97% sensitivity and high specificity for TFCC tears.
Fovea Compression Test
Pain over the pisiform with a positive grind test suggests this condition.
pisotriquetral arthritis
This brace has been shown to increase weight-bearing tolerance in TFCC injuries.
Wrist Widget
This structure is frequently injured in ECU subluxation and serves as the primary restraint preventing tendon displacement.
ECU subsheath
This portion of the TFCC is avascular and has poor healing potential.
The central TFCC
This test is used to measure weight-bearing tolerance through the upper limb and uses a jamar dynamometer.
Push off test
Pain with ulnar deviation and rotation after loading suggests this diagnosis.
ulnocarpal impaction syndrome
Early phase TFCC rehab focuses primarily on these two goals.
pain/edema control and protected AROM
This surgical procedure is commonly used for symptomatic ulnocarpal impaction syndrome when DRUJ arthritis is minimal.
ulnar shortening osteotomy
In the normal wrist, this percentage of load is transmitted through the radiocarpal joint.
80 %
This test stabilizes the radius and presses the ulnar styloid volarly, then observes rebound.
The piano key test
This condition presents with ulnar wrist pain that worsens during wrist flexion combined with ulnar deviation.
FCU tendonitis
These exercises, such as wall weight shifts and quadruped weight bearing, are commonly introduced to improve wrist proprioception and dynamic stability following ulnar sided wrist pain/TFCC injury.
closed-chain exercises
This TFCC region contains the highest concentration of vascular supply and is therefore most amenable to repair.
peripheral TFCC
This structure is NOT part of the TFCC
FCU
Articular disk
ECU
Ulnocarpal ligament
1. FCU
This test evaluates DRUJ stability and involves the therapist gasping the radius and ulna and moving the ulna in dorsal and palmer directions with respect to the radius.
The Ballottment Test
What method is considered the gold standard in diagnosing TFCC injuries.
Wrist Arthroscopy
Used for TFCC and ulnar-sided wrist pain rehab, these exercises challenge wrist proprioception and stability while the hand moves freely, such as ball tosses or dart thrower’s motion.
open-chain exercises
This structure remains neutral in forearm pronation, forearm neutral, then increases tension at a 30 deg angle in forearm supination. Therefore, it is most prone to subluxations in forearm supination.
The ECU
Which of the following most accurately describes the TFCC.
The TFCC consists of a central disc, the ulnar collateral ligament and the lunotriquetral ligament.
The TFCC consists of a meniscal homologue which includes the ECU sub sheath, the UCL, and the volar and dorsal DRUJ ligaments.
The TFCC consists of the volar and dorsal DRUJ ligaments, the FCU and a central disc
The TFCC consists of a disc connecting the radius, the ulna, and the triquetrum.
The TFCC consists of a meniscal homologue which includes the ECU sub sheath, the UCL, and the volar and dorsal DRUJ ligaments.
This test is preformed with the wrist positioned in full pronation, ulnar deviation and extension, and then the wrist is slowly moved into full supination while maintaining ulnar deviation against resistance from the examiner's other hand.
The ice cream scoop test for ECU subluxation
A patient presents with ulnar sided wrist pain, numbness in the small finger and ulnar half of the ring finger, intrinsic weakness, and normal sensation over the dorsal ulnar hand. Compression of the ulnar nerve is most likely located where?
Ulnar nerve entrapment at Guyon's canal.
This muscle pair is commonly targeted for early isometric strengthening in ulnar-sided wrist rehab.
ECU and pronator quadratus
According to Palmer's classification of TFCC injuries what is a Class I, Type A injury.
Class I -- traumatic
Type A -- central perforation