Dr. Kevin Yip

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

Featured on Channel NewsAsia

Leg Length Discrepancy

Leg Length Discrepancy

Leg Length Discrepancy

What is leg length discrepancy?

Leg length discrepancy is an orthopaedic problem that usually appears in childhood, in which one’s two legs are of unequal lengths. Often abbreviated as ‘LLD,’ leg length discrepancy may be caused by or associated with a number of other orthopaedic or medical conditions, but is […]

A Patient’s Guide to Adult Degenerative Scoliosis

X-Ray Lumbar Scoliosis

adult scoliosis

Introduction

A normal healthy spine will be straight when seen from the front or the back. When seen from the side, the normal spine forms a gentle “S” curve.

Scoliosis is an abnormal or exaggerated curve of the spine from the side or from the front or back. Adult degenerative scoliosis […]

Anatomy of The Lumbar Back Muscles-Internal Oblique

The internal oblique is the largest muscle of the abdominal wall . The internal oblique forms the middle layer of the abdominal wall between the TrA and the external oblique. It originates from the “lateral two-thirds of the inguinal ligament, anterior two-thirds of the iliac crest, and the lateral raphe of the thoracolumbar fascia in […]

Passive extension

Positioning.

The subject lies prone with the hip extended. The examiner stands level with the hip. One hand is placed on the thigh, just below the gluteal fold. The other hand grasps the thigh just proximal to the patella.

Procedure.

Lift the knee off the couch until the movement comes to a stop. […]

Passive adduction

Positioning.

The subject lies in a relaxed supine position. The examiner stands at the foot-end of the couch. One hand carries the heel, the other hand lifts the extended contralateral leg to about 45° of nexion.

Procedure..

Move the leg into add uction under the extended contralateral leg until the pelvis starts tilting laterally.

Common […]

Passive abduction

POSitioning.

The subject lies in the supine position,near the border of the couch, with the lower leg pendent. The examiner stands level with the subject’s hip. One hand grasps the distal thigh from the medial side. The other hand is placed on the opposite anterior superior iliac spine in order to stabilize the pelvis.

Procedure. […]

Passive medial rotation

Positioning.

The subject lies in the supine position with the hip and knee bent to 90°. The examiner stands level with the subject’s hip. One hand supports the lower leg just above the ankle, the other hand stabilizes the femur at the knee.

Procedure.

Rotate the lower leg outwards, meanwhile assuring the vertical […]

Passive external rotation

Positioning.

The subject lies in the supine position with the hip and knee bent to 90°. The examiner stands level with the subject’s hip. One hand supports the lower leg just above the ankle, the other hand is put at the knee and stabilizes the femur in a vertical position.

Procedure.

Rotate the […]

PASSIVE TESTS-Passive flexion

Positioning.

The subject lies relaxed in the supine position. The examiner stands level with the hip. Procedure.

Both hands lift the knee upwards towards the subject’s chest until the movement stops. Meanwhile a slight axial pressure is applied on the femur.

Common mistakes:

• Moving the thigh too much laterally towards the shoulder. • Carrying […]

Hip and pelvis

Injuries to the pelvis, hip, and thigh involve the largest soft tissue structures in the body. Such injuries can be extremely disabling and often require a substantial amount of time for rehabilitation. The whole lower extremity must be considered, along with gait analysis and posture. When rehabilitating the hip and pelvis,proprioceptive and balance activities should […]