Classification of Chondral and Osteochondral Injuries of the Knee
– See: – Knee Joint Menu: – Arthroscopy of the Degenerative Knee – Osteochondritis Dessicans – Osteoarthritis – Discussion: – described types articular cartilage … Read more
– See: – Knee Joint Menu: – Arthroscopy of the Degenerative Knee – Osteochondritis Dessicans – Osteoarthritis – Discussion: – described types articular cartilage … Read more
– Diff Dx: – stress fractures (identified on 45 deg medial oblique view) – inflammatory arthritides (RA or Reiter’s Syndrome) – plantar fasciitis – distal tibial tarsal syndrome – heel pad atrophy; – after the age of 40, the adipose tissue begins to atrophy, w/ resulting loss of absorbency
– Discussion: – two major glycosaminoglycans w/ in cartilage ground substance consist of chondroitin sulfate and keratan sulfate; – both of these substances are covalently attached to the core protein of proteoglycan; – their concentration and distribution w/ in matrix vary considerably according to age, type of cartilage, & … Read more
– Discussion: – pins penetration of joint is a leading cause of chondrolysis; – penetration by a single screw (which is immediately removed) has a low incidence of chondrolysis; – if chondrolysis or AVN develops, early osteoarthritis is more likely; – some pts w/ chondrolysis … Read more
– Discussion: – rapid, progressive loss of joint space on radiographs and associated loss of clinical hip motion; – pins penetration of joint is a leading cause of chondrolysis; – penetration by a single screw (which is immediately removed) has a low incidence of chondrolysis; – if chondrolysis or AVN … Read more
– See: Knee Joint Menu – Discussion: – articular cartilage injury and potential for repair; – rotational forces in direct trauma is the most common cause of injury to the articular cartilage; – in adults, the tidemark zone is the weak link between the overlying cartilage and subchondral bone and therefore shearing injuries most often … Read more
– Discussion: – in this procedure, a “V” shaped osteotomy of the distal metatarsal is created, which allows the first MT head to be shifted laterally, correcting the abnormal shape from long standing valgus drift; – effect on blood supply: – Circulatory disturbance of the first metatarsal head after Chevron osteotomy as shown by … Read more
(See also: Acetabular Osteotomies) Discussion a acetabular osteotomy salvage procedure which is indicated in patients without a concentrically reducible hip; modified shelf osteotomy above acetabulum w/ medial displacement of acetabulum; distal fragment is displaced medially and upward as osteotomy hinges on the symphysis pubis; hip capsule is interposed between newly formed acetabular roof & femoral head; relies … Read more
– See: – Cervical Stenosis: – Central Cord Syndrome – Soft Disc Protrusion: – SCIWORA Syndrome – Uncovertebral joints – Discussion: – refers to a combination of degenerative disc disease and osteophyte formation; – cervical spondylosis typcially begins to be seen at age 40-50, is seen in men > women, & most common occurs at … Read more
– See: – Radiographic Changes of Cervical Spine in JRA: – Rheumatoid Arthritis: – Transverse Ligament Rupture: – Discussion: – cerival spine involvement is common in RA (up to 90%) & is more common w/ long standing disease and multiple joint involvement; … Read more