Dr. Kevin Yip

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

Featured on Channel NewsAsia

Thoraco-Scapular Instability

SYMPTOMS

There is anterior and or posterior shoulder pain and weakness in most active overhead and forward movements. A thrower cannot throw, a bowler cannot bowl, a tennis serve will be weak and boxers cannot hit hard.

AETIOLOGY

This is secondary shoulder pain caused by dysfunction of the scapula, causing anterior shoulder instability, […]

Subscapularis Tendon Rupture

SYMPTOMS

There is acute or gradual onset of exercise-induced pain and weakness on internal rotation with the shoulder in a neutral position, and difficulty in reaching the lower back with the hand.

AETIOLOGY

The onset can be dramatic and relate to an anterior shoulder dislocation caused by heavy tackling, for example in rugby.

[…]

Slap Tear

SYMPTOMS

There is sharp impingement-type shoulder pain and weakness when trying to perform specific overhead activities, such as throwing a ball or serving in tennis.

AETIOLOGY

The SLAP ligament (Superior Labrum Anterior to Posterior) is the superior part of the glenoid labrum. Besides stabilising and centring the humeral head to the glenoid, it […]

Referred Pain From The Upper Back

AETIOLOGY

Shoulder injuries often cause pain around the upper back and vice versa. Thoracoscapular instability is an example of a functional problem that causes upper back and shoulder pain. Such dysfunctions can occur after a backwards fall to the ground or after immobilisation. Costo-vertebral dysfunction can also cause similar symptoms.

CLINICAL FINDINGS

Whenever there […]

Post-Traumatic Shoulder Stiffness

SYMPTOMS

There is gradual onset of diffuse pain or ache, and stiffness in the shoulder after previous trauma or immobilisation. Physiotherapy, after manipulation under anaesthesia and arthroscopic release, improves the condition dramatically. Secondary problems in the neck and upper back are almost inevitable and must be addressed.

AETIOLOGY

This disorder has similar symptoms to frozen […]

Posterior Shoulder Dislocation

SYMPTOMS

There is acute onset of localised swelling and pain over the posterior part of the shoulder, with typical deformation, after an excessive trauma. This injury is more common in epileptics and alcoholics than in athletes.

AETIOLOGY

This injury accounts for fewer than 5 per cent of shoulder dislocations. It is uncommon in sport […]

Pectoralis Muscle Rupture

SYMPTOMS

Sudden onset of localised pain in the anterior part of the shoulder and upper arm after excessive abduction and external rotation such as in a rugby tackle. There is weakness on internal rotation and forward flexion.

AETIOLOGY

The pectoralis muscle insertion at the upper humerus or muscle bulk can rupture partially or completely.

CLINICAL […]

Multi-Directional Instabiliy

SYMPTOMS

There is sudden or gradual onset of localised pain in the shoulder, usually during overhead activity. Typically, pain occurs in specific positions or during different movements. Sometimes there is a sense of weakness or instability.

AETIOLOGY

Multi-directional laxity is a hereditary condition caused by a loose shoulder joint capsule. In many sports, […]

Frozen Shoulder

SYMPTOMS

There is sudden or gradual onset of localised pain and stiffness in the shoulder, often in a middle-aged athlete, with no preceding trauma.

AETIOLOGY

Frozen shoulder is a capsulitis of unknown origin that makes the shoulder freeze because of a gradually shrinking capsule. The onset can be dramatic; the patient wakes up […]

Clavicle Fracture

SYMPTOMS

There is acute onset of localised swelling and pain over the anterior part of the shoulder, with typical deformation, after direct or indirect trauma, often in a young athlete.

AETIOLOGY

It is common in rugby, ice hockey, riding and cycling.

CLINICAL FINDINGS

A clavicle fracture is usually easy to diagnose since the […]