Unilateral rupture of the quadriceps tendon is not uncommon, but bilateral spontaneous quadriceps tendon rupture is a rare occurrence and is usually associated with some underlying predisposing condition. We describe a case of a previously healthy patient who presents with bilateral spontaneous rupture of both quadriceps tendon. Investigations revealed that he had underlying alkaptonuria which was previously undiagnosed. Alkaptonuria is a rare inborn metabolic disease, which results in the derangement of homogentisic acid metabolism. Excessive accumulation of homogentisic acid is known to affect multiple organ systems, resulting in tendinopathy and arthropathy in the muscoskeletal system.
[Show abstract][Hide abstract] ABSTRACT: Ochronosis is connective tissue manifestation of Alkaptonuria. Joint involvement specially hip and knee destruction is seen. The cartilage is pigmented and destroyed. It is interested for both pathologists and orthopedic surgeons.
A 54 years old woman with hip fracture after simple falling is candidate for surgery, but, after skin and subcutaneous incision over deep fascia there was dark blue pigmentation which continues toward hip joint. After biopsy of soft tissues and bone, in another operation, we replace hip joint.
In this case, besides of cartilage destruction of hip joint, there was a lythic lesion of neck of femur which causes pathologic fracture of hip joint. We planned Total hip replacement instead of bipolar for her because of cartilage damage of acetabulum.
[Show abstract][Hide abstract] ABSTRACT: This paper deals with the design and construction of an inexpensive, compact wideband conical corrugated horn using aluminium plates that produce symmetric radiation patterns, good impedance match and low cross-polarisation. One of the objectives of this paper is to produce a low cost, small and compact antenna without compromising the copolar patterns. With these objectives in mind, a unique design methodology was used. The conical corrugated horn was manufactured with aluminium plates. These plates have varying diameters in the centre and when bolted together, slots and ridges also known as the corrugations were formed. These plates have equal widths and changes to the radiation characteristics and bandwidth can be easily made to the design by either removing or adding plates to it. The final design has shown successful results with symmetrical E and H plane radiation patterns, good impedance match with a VSWR<2 over a bandwidth of 6 GHz, low crosspolar levels, compactness and inexpensiveness. This corrugated horn can be used for many applications like feed horn for reflector dishes, spacecraft antennas or radar. And most importantly, the horn has design and application flexibility by changing the dimensions of the aluminium slots to alter its characteristics.
RF and Microwave Conference, 2004. RFM 2004. Proceedings; 11/2004
[Show abstract][Hide abstract] ABSTRACT: Bilateral spontaneous rupture of quadriceps tendons is rare and is usually associated with predisposing comorbid conditions.
We report an uncommon case of bilateral synchronous rupture of the quadriceps tendon after a ground level fall in a 51-year-old
male, 8 years after renal transplant.
La rupture spontanée du tendon quadricipital est rare, elle est habituellement liée à une comorbidité. Nous rapportons un
cas inhabituel de rupture bilatérale synchrone après chute au sol d’un patient de 51 ans, huit ans après greffe de rein.
European Journal of Orthopaedic Surgery & Traumatology 01/2007; 18(1):63-67. DOI:10.1007/s00590-007-0260-y · 0.18 Impact Factor
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