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At least 577 records · Page 32Linked to original sources
PubMed2004

Recurrent inferior patellar dislocation in an osteo-arthritic knee.

A case of inferior dislocation of the patella in an 80-year-old woman with an osteo-arthritic knee is presented. This is a rare injury in the degenerate knee and the first case in which recurrence, the need for operative reduction and intra-articular damage has been demonstrated.

Aged↗
PubMed2004

An unusual knee injury: Isolated tibiofibular dislocation.

Isolated proximal tibiofibular dislocation is an extremely rare condition with potentially serious complications if missed. The mechanism of injury, clinical presentation and treatment options are discussed. This injury was more common in previous centuries, when horse riding was the preferred method of transport. The young man we present was involved in a pastime that is rising in popularity and it is therefore likely that this injury will be a more common presentation to EDs.

Adult↗
PubMed2004

[Knee luxation--follow-up after surgery].

BACKGROUND: Traumatic dislocation is the most severe ligamentous injury of the knee. The traditional definition of knee dislocations has been expanded to include bicruciate knee injuries with one or both lateral ligaments injured, even when the knee is reduced on initial presentation. Surgical treatment is internationally well accepted. MATERIAL AND METHODS: From 1996 to 2002, 87 patients with knee dislocation were treated in our department. In this prospective study, 55 patients were followed up with functional knee tests a minimum of one year (mean: 3.5 years) after surgical treatment. RESULTS: 59% of the injuries were high-energy traumas. Mean age was 34 (12-80). 57% of the patients achieved excellent to good results on the Lysholm Score. INTERPRETATION: Positive prognostic factors are likely to be age less than 40 at the time of the accident or sports-related injury. Fifty-four of the 55 patients in the follow-up study had returned to work or studies after one year. Dislocated knee is not only related to high-energy and traffic injuries; it also occurs in low-energy trauma and sports injuries.

Adolescent↗
PubMed1993

Anomalous origin of the sural nerve in a patient with tibial-common peroneal nerve anastomosis.

Recognition of anomalous innervation patterns may be important in dealing with peripheral nerve injuries. We describe a patient who suffered injury to the common peroneal nerve (CPN) at the knee when he laterally dislocated his knee. Intraoperative nerve conduction studies during surgical exploration revealed that nerve fibers from the tibial nerve crossed over to join the CPN immediately distal to a neuroma incontinuity. The sural nerve was also found to arise totally from the CPN.

Adult↗
PubMed1990

Arterial lesions in major knee trauma: pedal pulse a false sign of security?

In major knee trauma fractures and/or dislocations can be associated with arterial lesions. Two case reports demonstrate the difficulties in the diagnosis of intimal lesions in the popliteal artery. The presence of a pedal pulse present at the time of admission can be a false sign of security. The importance of prompt diagnosis and treatment is emphasized. The use of arteriography is discussed.

Adolescent↗
PubMed1999

The Insall-Burstein total knee replacement in osteoarthritis: a 10-year minimum follow-up.

A total of 99 Insall-Burstein posterior stabilized (IBPS) knee replacements were implanted in 86 osteoarthritic patients. We reviewed 60 knees with a 10- to 15-year follow-up. Using the Knee Society score, 35 knees (58%) were excellent, 15 (25%) good, 4 (7%) fair, and 6 (10%) poor. Flexion at follow-up was 106 degrees on average. Moderate patellofemoral crepitation was present in 5 knees (9%), and 11 knee required excision of a synovial nodule proximal to the patella. Radiographic analysis showed 5 osteolytic lesions (8%) around well-fixed tibial and femoral components and minimal (1 mm) narrowing of the medial polyethylene thickness in 7 knees (12%). There were 6 (10%) failures requiring reoperation because of aseptic loosening (4 knees), deep infection (1 knee), and recurrent patellar dislocation (1 knee). Survivorship analysis using revision as the endpoint showed a cumulative success rate of 92% at 10 years. In this study, the IBPS knee has shown good long-term results with low rates of aseptic loosening and no failures attributable to polyethylene wear.

Aged↗
PubMed2003

Extensor mechanism problems following total knee replacement.

Despite advances in TKR, a number of complications related to the extensor mechanism still exist. The vast majority of these are preventable with good surgical technique and attention to detail. Proper component positioning, adequate soft-tissue balancing and dissection, and gentle retraction are imperative. Proper resection and resurfacing of the patella, central tracking of the implant, maintenance of the patella vascularity, and use of an implant with a well designed patellofemoral joint help minimize complications of TKR.

Arthroplasty, Replacement, Knee↗
PubMed2000

[Arthroscopic assessment and clinical correlation of femoro-patellar tracking. Apropos of 116 knees in 115 patients under 40].

PURPOSE OF THE STUDY: The dynamic study of the patello-femoral joint is of outstanding interest in unexplained anterior knee pain syndrome. Accuracy of information provided by video-arthroscopy is of concern due to its technical conditions. Serum inflow favors the natural patellar tendency to shift laterally (mean value, 7 degrees ). Absence of active quadriceps muscle contraction under anesthesia and use of a tourniquet act conversely. The aim of this study conducted in less than 40 year-old patients, was to correlate retrospectively arthroscopic evaluation of patello-femoral tracking and trochlear centralization measured during conventional "inflow" procedure, with patella related pain syndrome and its outcome. MATERIAL AND METHODS: The study group included 116 knees in 66 male and 49 female patients (1 bilateral). Mean age at arthroscopy was 26 years (range, 12 to 40 years). According to pre-arthroscopic clinical data, knees were broken down into 3 study groups: Gr-T (Test, painless patella), 50 knees with meniscal and/or ligament injury: Gr-PRP (Patella Related Pain but no dislocation), 55 knees: Gr-DLC (patella DisLoCation), 11 knees. Arthroscopic technique was the following: general anesthesia, high-proximal pneumatic tourniquet (40mmHg), single antero-lateral portal and serum inflow by simple gravity (2m). The minimum flexion angle that was necessary to obtain de visu a perfect centralization of the patella dome into the trochlear groove was systematically measured before any arthroscopic procedure was performed. RESULTS: Average value of the Flexion Angle providing perfect Centralization (FAC) in the "serum inflow" arthroscopic situation was 39 degrees in Gr-T and 52 degrees in Gr-PRP; this difference was highly significant (p <.0001). Patella centralization could not be achieved despite maximum possible flexion in 5 of the 55 PRP-knees and in 9 of the 11 DLC-knees. FAC value > 65 degrees correlated significantly (chi2, p=0.0001) with patella related clinical symptoms (pain and instability, groups PRP + DLC) and indicated patellar maltracking. In the PRP-group, an "FAC value > 65 degrees" showed a low sensitivity (0.34), but high specificity and positive predictive value of 0.98 and 0.95, respectively. DISCUSSION AND CONCLUSION: Arthroscopic examination for patello-femoral tracking can provide measurable information on the FAC angle, that is reproducible under precise technical conditions. Its diagnostic value in unexplained anterior knee pain versus information provided by conventional imaging, and their respective effectiveness-risk and -cost relations could be the purpose of future prospective studies.

Adolescent↗