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Peroneal Tendon Instability , A Rare But Important Ankle Injury

Peroneal Tendon Instability

Ankle sprain is a common injury in Singapore athletes as well as the active adult. Most of the time, the ankle heals with a little care (rest, taping, ice). But one rare complication of lateral ankle sprains is a condition called peroneal tendon instability. A lateral ankle sprain means the side of the ankle away from the other leg is sprained. The two peroneal tendons go down the leg and around the back of the ankle bone. The tendons set down inside a tunnel formed by bone and connective tissue called the retromalleolar groove. A fibrous band (the superior peroneal retinaculum) goes across the tendon to hold them in the groove. […]

Proximal Humerus Fractures

Few areas of fracture management have been the subject of as much controversy, new information, and revisionist thinking as the management of proximal humerus fractures. Proximal humerus fractures account for 2% to 4% of all upper extremity fractures. They occur most often in older patients and represent complex injuries often including bony fragment displacement associated […]

Acromioclavicular Joint

The AC joint is a diarthrodial joint and the only articulation between the clavicle and scapula. Variable inclinations exist, with being nearly vertical to angled downward and medially accounting for up to 50 degrees. The AC joint has an incomplete fibrocartilagenous intra-articular disc, potentially predisposing it to degenerative changes.

Degenerative changes have been shown to […]

Meniscal Motion

As the knee passes through a range of motion, the menisci move with respect to the tibial articular surface. A classic study demonstrated that from 0 degrees to 120 degrees of knee flexion the mean meniscal excursion (defined as the average anteroposterior displacement of the anterior and posterior meniscal horns along the tibial plateau in […]

Facet Joint Syndrome

The joints between the vertebral arches, the intervertebral facet joints, are oriented in such a way that they reduce the rotation capability of the vertebrae. If there were no facet joints the disks would wear out more quickly as a result of rotatory movement in the spine. When the disks are affected by age-related degenerative […]

Dislocations around the Wrist

Dislocations around the wrist are rare in sports, but are important to recognize because a good recovery depends on early and correct diagnosis and treatment. Even with proper treatment, these injuries often have long-term residual symptoms.

Separation between the scaphoid and lunate

Scapholunate dissociation may occur in forced dorsiflexion of the wrist. Ligamentous disruption between […]

Fracture of the Scaphoid

Fracture of the scaphoid

A fracture of the scaphoid bone in the wrist can result from a fall with the wrist bent backwards on an extended arm. The injury is particularly common in contact sports such as soccer, American football, rugby, ice hockey, and team handball, but can also occur in skiers and others.

The […]

Fracture of the Distal Radius and Ulna

A fracture of the distal radius (Colles’ fracture) is the most common of all fractures. It usually occurs as a result of a fall on the extended arm, forcing the hand backwards and upwards. A less common injury is Smith’s fracture where the mechanism is a forward flexion (palmar flexion) of the wrist. The injury […]

Little Leaguer’s Elbow

When a ball is thrown in baseball, the wrist and the fingers are vigorously pronated. The muscles responsible for this movement are all located in the inner (medial) compartment of the forearm. The force of the throw is transmitted up through the arm to the weakest part of the muscle group, which is the medial […]

Fractures of the Humerus

Fractures of the upper part of the humerus occur most frequently as a result of falling on an outstretched arm, but they may also follow a direct fall on the shoulder during contact sports, such as rugby and American football, alpine skiing, and riding. Fractures of the upper part of the humerus occur most frequently […]