Dr. Kevin Yip

Dr Kevin Yip
Orthopaedic Surgeon
MBBS(UK), FRCS(EDIN), FAM(SING), FHKCOS(ORTHO)

Featured on Channel NewsAsia

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. […]

Ulnar Nerve Neuritis

WHAT IS ULNAR NERVE NEURITIS?

Ulnar nerve neuritis begins with a little bit of tingling in the little and ring fingers especially when placing the elbow on arm rests in cars or on a chair.

WHAT ARE THE CAUSES?

Ulnar nerve neuritis is caused by compression or irritation of the ulnar nerve as it runs […]

Palpation of soft tissue

The Achilles tendon is easily visible and palpable.1t inserts at the upper and posterior border of the caleaneus. The plantar aspect of the calcaneus is covered by a soft heel pad. The tip of the lateral malleolus is level with the lateral jOint line of the talocaleanean joint. Its inferior border extends about 1 em […]

Visual testing by eliciting fluctuation

Positioning.

The subject lies in the supine position with the leg extended.

Procedure.

The examiner strokes in a sweeping motion with the back of one hand over the lateral recessus and the suprapatellar pouch. This moves the fluid upwards and medially. In minor effusion, all the fluid is moved to the medial part […]

Palpation of soft tissues at the medial side

Medial collateral ligament

The medial collateral Hgament is a broad, flat and almost triangular band, with a large insertion on the posterosuperior aspect of the medial femoral epicondyle, dose to the insertion of the adductor magnus tendon. Its fibres run obliquely, anteriorly and inferiorly, to insert at the medial aspect of the tibia, just behind […]

Palpation of the extensor mechanism

This is performed on an extended knee.First the muscular structures are ascertained. Ask the patient to extend the slightly bent knee and resist the movement.This movement usually outlines the vastus medialis, vastus lateralis, rectus femoris and the patellar ligament. Then the patellar border with its tendinous insertions are palpated. With the hip in flexion and […]

Wrist-RADIAL

At the distal end of the radius the styloid process can be palpated. Slightly more proximally on the radius a small groove can be found.Just distally to the styloid process the scaphoid (navicular) bone is palpable. It can be made more prominent by asking the subject to execute ulnar deviation of the wrist. When the […]

Injuries to the Suprascapular Nerve

The suprascapular nerve supplies the supraspinatus and infraspinatus muscles. It runs in a groove on the upper edge of the scapula, and is held in the groove by a ligament. The suprascapular nerve can be damaged at the time of forward or backward dislocation of the shoulder joint, with the dislocation stretching the nerve over […]

Peroneus Tendon Dislocation

SYMPTOMS

In the acute phase, there is sharp pain and swelling/bruising over the lateral, posterior part of the ankle and distal fibula, after previous sprain. The patient will have a sense of weakness and instability of the ankle and may recall one or two snapping sounds from the time of the injury. If there was […]

Ulnar Nerve Neuritis

WHAT IS ULNAR NERVE NEURITIS?

Ulnar nerve neuritis begins with a little bit of tingling in the little and ring fingers especially when placing the elbow on arm rests in cars or on a chair.

WHAT ARE THE CAUSES?

Ulnar nerve neuritis is caused by compression or irritation of the ulnar nerve as it runs […]