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patello chondromalacia

A J Cox
This paper presents a review of the biomechanics of the patello-femoral joint. The evolution of sagittal plane models of the joint from that of a simple pulley is explained. The importance of other biomechanical factors, such as the Q-angle and the cartilage structure, and their relationship to chondromalacia are also discussed. A hypothesis relating to collagen fibre orientation in cartilage is presented.
August 1990: Clinical Biomechanics
Oliver S Schindler
PURPOSE: To comprise current knowledge on morphology, embryology and pathophysiology of synovial plicae as well as on clinical and therapeutic aspects of the plica syndrome. METHODS: Review of the literature combined with a meta-analysis of studies assessing the outcome of open or arthroscopic plica excision including the author's own series. RESULTS: The term synovial plica has been devised to describe a number of intra-capsular folds thought to represent remnants of a membranous knee joint partition present during foetal development...
February 2014: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Daniellle A Katz
Slipped capital femoral epiphysis typically occurs in adolescents. Presentation may include limp or vague pain in the hip, thigh or knee. Knee pain, in particular, is a common complaint among adolescents and may be due to patello-femoral syndromes, Osgood-Schlatter disease, patellar tendonitis, or chondromalacia patella, to name a few. However, it is vital to remember that the complaint of knee pain may be present because of referred pain from pathology at the hip. Every child presenting with a complaint of hip, thigh or knee pain must undergo a hip examination...
February 2006: Pediatric Annals
P Griss
The author presents a modification of Morscher's sagittal osteotomy of the patella especially for the treatment of excentric chondromalacia. Congruity of the joint spaces in this modification is achieved through removal of an anteriorly based bone wedge from the patella after sagittal wedge osteotomy allowing the lifting of one or the other patellar facet. This osteotomy is indicated in all cases of unilateral chondromalacia or arthrosis with narrowing of the two joint spaces viewed on tangential patello-femoral X-rays...
October 1980: Zeitschrift Für Orthopädie und Ihre Grenzgebiete
H Waisbrod, N Treiman
Thirteen patients with chondromalacia Stages 1, 2, and 3 and with patello-femoral osteoarthritis were treated by anterior displacement of the tibial tuberosity and followed for 22 to 33 months. Rated on a scale of objective anatomic and clinical criteria, the results were satisfactory in 85% of the patients. These results corroborate reports of other authors concerning this operation.
November 1980: Clinical Orthopaedics and related Research
F Lund, B E Nilsson
Sixty-eight knees in 62 patients wiht degenerative changes of the patellar joint surface, chondromalacia or arthrosis, were operated on with anterior displacement of the tibial tuberosity. Complications were encountered in no less than 22 joints and the results appeared to be somewhat related to these complications, particularly in women, even if a direct relationship between complications and remaining symptoms could not be demonstated. In a follow-up examination an average of 13 months after operation, approximately 90 per cent of the patients had improved, men as well as women...
August 1980: Acta Orthopaedica Scandinavica
F Lund, B E Nilsson
In a series of patients in whom the patello-femoral joint had been examined by arthroscopy, in conjunction with arthrotomy or both, previously obtained films were reviewed. A series of radiologic morphometric measurements with bearing on the shape of the patella and the patello-femoral joint was carried out and compared between patients who had normal patello-femoral joints, patients with chondromalacia grade II or III and patients with chondromalacia grade IV or arthrosis. No difference between the three groups in any of the variables was found...
1980: Acta Radiologica: Diagnosis
F Lund, B E Nilsson
Arthroscopy of the knee joint was performed in 126 patients complaining of symptoms in the patello-femoral joint. In about one-third of these cases the arthroscopic findings in the patello-femoral joint were normal, whereas the remainder had varying degrees of chondromalacia or arthrosis. The classification of changes agreed well with an independent classification carried out in conjunction with surgery. In one-third of the cases there were additional findings which could explain the knee symptoms, more than half of these being degenerative changes reminiscent of an early gonarthrosis located in the femuro-tibial joint...
April 1980: Acta Orthopaedica Scandinavica
S Zanoli, P Raffaelli, S Rindi, G De Luca
The biochemical changes in the articular cartilage of the femoral condyles and the patella were studied during the earliest stage of patello-femoral arthrosis, with particular reference to chondromalacia of the patella in the "lateral hypertension syndrome", with the object of comparing them with the results obtained by Boni et al. (1977) in the initial phases of experimental arthrosis induced in rabbits by means of vitamin A. The biochemical determinations were done on samples of cartilage removed at operation from the medial and lateral femoral condyles and the medial and lateral patellar articular facets in ten patients...
August 1981: Italian Journal of Orthopaedics and Traumatology
S W Casscells
One hundred and sixty-three patients who underwent arthroscopic studies of the knee have been reviewed in an attempt to better understand the clinical condition present in chondromalacia of the patella. All patients included in the study were found to have either painful knees, patellar chondromalacia, or both, but no other intraarticular pathology. The difference between true chondromalacia of the patella (which may or may not be symptomatic) and other types of pain in the patello-femoral area is emphasized...
1982: Journal of Pediatric Orthopedics
P Ficat, J Philippe, J Arlet
The authors have shown that the initial phase of coxarthrosis consists purely of cartilaginous lesions, not visible in radiographs. They have studied 200 arthrograms of the hip using a precise technique which is described. They have found cartilaginous lesions both in cases of insufficiency of the lateral wall of the acetabulum, and in cases of insufficiency of the medial wall of the acetabulum. Cartilaginous lesions may range between a simple decrease of articular cartilage height and complete ulceration either on the cephalic or acetabular sides...
1981: Revue de Chirurgie Orthopédique et Réparatrice de L'appareil Moteur
E Hille, K P Schulitz
At 13 post-mortem-knees we investigated the patello-femoral contact area in different degrees of function, referring to the localization of chondromalacia. We found that the localization of chondromalacia didn't accord to the contact area in 50% of all cases. Possible other causes are discussed.
January 1984: Zeitschrift Für Orthopädie und Ihre Grenzgebiete
A Górecki, W Kuś
No abstract text is available yet for this article.
November 1985: Polski Przeglad Radiologii
T Zidorn
Degenerative alterations of the patello-femoral joint are often painful and cause an increase of intramedullary pressure. The intraspongious pressure of the patella is measured with a cannula after lateral drilling. Patients with chondromalacia or osteoarthrosis have an increased intramedullary pressure compared with normal patients. The degree of flexion of the knee-joint correlates with the intramedullary pressure. More flexion causes an increase of pressure as well in normal patella as in chondromalacia or in osteoarthrosis...
November 1991: Zeitschrift Für Orthopädie und Ihre Grenzgebiete
F Menschik, F Landsiedl
The results of lateral retinaculum-release by arthroscopic, subcutaneous and open technique on 122 patients are presented. Within a follow-up period of 3.68 years in average the postoperative success rate was 56%. The results of surgery if the cartilage of the patella was unchanged--as well as with isolated medial or lateral chondromalacia--were good. If there was medial and lateral chondromalacia the isolated retinaculum-release is insufficient. The rate of postoperative complications (effusion, haemorrhage) by arthroscopic surgery technique is with 11...
May 1992: Zeitschrift Für Orthopädie und Ihre Grenzgebiete
P Maquet
Surgical modifications of the biomechanics of osteoarthritic and chondromalacic patellofemoral joints reduce the joint pressure by distributing pressure evenly along the articular surfaces. Forward displacement of the patella tendon lengthens the lever arm of the tendon. It also increases the angle formed by the forces exerted by the quadriceps muscle and by the patella tendon. As a result, the compressive forces transmitted from the femur to the tibia and from the patella to the femur are decreased. If the anterior tuberosity of the tibia is displaced forward and medially, the subluxated patella is brought back into the intercondylar groove and the weight-bearing areas of the patello-femoral joint are increased...
March 1976: Clinical Orthopaedics and related Research
J Goodfellow, D S Hungerford, C Woods
Two distinct lesions affect the articular cartilage of the patella. Surface degeneration occurs particularly on the odd facet; it is age dependent, often present in youth and it becomes more frequent with increasing age. It probably does not occasion patello-femoral pain in youth, but may predispose to degenerative arthritis in that joint in later years and is regarded as a consequence of habitual disuse. The term "basal degeneration" is used to describe a lesion in which there is a fasciculation of collagen in the middle and deep zones of cartilage without, at first, affecting the surface...
August 1976: Journal of Bone and Joint Surgery. British Volume
I J Leslie, G Bentley
Chondromalacia patellae is difficult to diagnosis clinically with accuracy. In order to clarify the relevant symptoms and signs, 78 patients presenting with a clinical diagnosis of chondromalacia were examined by arthroscopy. In 49% of the knees no abnormalities were found. Presenting symptoms were similar in the normal and abnormal groups. Physical signs were more helpful in diagnosis and it is considered that the presence of an effusion, quadriceps wasting, and patello-femoral crepitus are the most important clinical findings in the diagnosis of chondromalacia patellae...
December 1978: Annals of the Rheumatic Diseases
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