Question

The triangular fibrocartilaginous complex (TFCC) is most susceptible to damage:

• A. At the start of absorption
• B. At the end of absorption
• C. At the end of propulsion
• D. During open chain activities

Answer 1

Answer:

Option C (At the end of propulsion)

Explanation: TFCC is an abbreviation for the triangular fibrocartilage complex which remains formed between the different ligaments existing between the radio-ulna and the ulna and the carpal ligaments.

The TFCC is known to perform a number of functions as listed below:

a) It establishes a connection between the ulna and the radius and thus assists in permitting a rotation to the fore arm.

b) It absorbs a significant amount of the load and then transmits the remaining load on to the radius and ulna

Due to its significant involvement in the load transmission, the complex is also susceptible for a severe injury. The chances of having injury is more prevalent amongst the individuals who experience a heavy load on their forearm (or arm bones). They are the sports persons like tennis players, wrestlers and heavy load lifters.

It is to be reported that the portion of the complex which is most susceptible to the damage is the area which lies at the end of the propulsion. This means that the muscles when exhibit the propulsive forces and tend to have the involvement of the forces of the extension and pronation of the wrist bones such that the ulnar end of the arm can be overstretched to help overcome the tensile strength introduced and caused onto the fore arms.