Specialists

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Stress Fracture

Basics Description A stress (microscopic) fracture occurs when: Repetitive stresses are applied to a bone faster than it is able to remodel to withstand this challenge. As the stressing force continues, the bone gradually fatigues and eventually breaks. Remodeling occurs in response to the stress but does not happen quickly enough to prevent the […]

Rotator Cuff Injuries

Basics Description Comprises 4 musculotendinous structures (the supraspinatus, infraspinatus, teres minor, and subscapularis) that: Compress the humeral head into the glenoid, allowing the larger muscle groups to function properly Provide muscular balance to the glenohumeral joint Injuries to the cuff can occur at any age, but injuries to people >60 years old are likely […]

Paget Disease

Basics Description First described by Sir James Paget in 1877 , Paget disease (osteitis deformans) is a bone disorder commonly seen in the geriatric population. As implied by the name osteitis deformans, the involved bone may be severely deformed and enlarged, features that suggest an inflammatory origin. A chronic and slowly progressive disease of […]

Kienbock Disease

Basics Description Kienbock disease is AVN of the lunate of the wrist with collapse of the bone and arthritis in the advanced stage. The classification system by Stahl, which was later modified by Lichtman et al., is based on the radiographic appearance of the lunate: Stage 1: Radiographically normal lunate or with small fracture […]

Hip Pain in the Child

Basics Description Hip pain is a term used to describe discomfort in the groin, which receives sensory innervation provided by the obturator and femoral nerves. This pain can be produced by a lesion anywhere in the region of the hip joint, such as: Capsule and synovial lining Bone of the pelvis or proximal femur […]

Congenital Pseudarthrosis

Basics Description Congenital pseudarthrosis is a rare defect of the distal tibia (at the junction of the middle 1/3 and distal 1/3) in which the bone is cystic and bowed and eventually fractures. The bone is dysplastic from birth. The deformity often increases with age. The abnormality may not be noticed unless anterior bowing […]

Acromioclavicular Joint Arthritis

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Basics Description The AC joint can become a source of pain in the shoulder, often because of degenerative osteoarthritis, posttraumatic arthritis, or distal clavicle osteolysis. Diagnosing problems of the AC joint: Best diagnosed with pain on palpation, reproduction of pain with cross-body adduction, and diagnostic injections Plain radiographs, especially the Zanca view, or […]

A Patient’s Guide to Kienbock’s Disease

Introduction

Kienbock’s disease is a condition in which one of the small bones of the wrist loses its blood supply and dies, causing pain and stiffness with wrist motion. In the late stages of the disease, the bone collapses, shifting the position of other bones in the wrist. This shifting eventually leads to degenerative changes […]