What is a Tibiofibular Joint Dislocation?
There are two Tibiofibular joints which are the joints between the Tibia (larger shin bone) and the Fibula (smaller shin bone). These two bones form a joint just under the knee, known as the proximal tibiofibular joint and it is this joint which is most commonly dislocated. The distal tib-fib joint is located just above the ankle.
The proximal tib-fib joint is a very stable joint which provides very little movement. It is held together with strong, thick, fibrous bands which travel diagonally between the two bones.
A dislocation of this joint occurs due to a significant force being applied whilst the knee is fully bent. The individual may fall onto the knee or suffer an impact to the front of the knee.
Symptoms of a Tibiofibular joint dislocation include:
- Instant pain at the time of injury.
- Pain and swelling just below the knee, to the outside of the joint.
- The head of the fibula may be more prominent than on the other side.
- Ankle movement increases pain.
- Difficulty weight bearing.
Treatment
- RICE principle - rest; ice; compression; elevation.
- Visit a specialist, immediately who may:
- Refer for an X-ray or MRI scan.
- Surgery is usually required to fix the two bones back together.
- The leg is then placed in a cast for 6 weeks.
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