Disabling ossification of the patellar tendon.

Kahalch M B, Osborn I, Leroy E C. Increased factor VIII/von Willebrand factor antigen and von Willebrand factor activity in scleroderma and in Raynaud's phenomenon. Ann Intern Med 1981; 94: 482-4.

Sheeran T P, Blann A D, Emery P, Bacon P A. Factor VIII:RAg in primary Raynaud's syndrome and scleroderma. Is it of diagnostic or prognostic value? Arthritis Rheum 1990; 33 (suppl:) S157.

Greaves M, Malia R G, Milford Ward A, et al. Elevated von Willebrand factor antigen in systemic sclerosis: relationship to visceral disease. BrJ Rheumatol 1988; 27: 281-5.

Short P E, Williams C E, Picken A M, Hill F G H. Factor VIII related antigen: an improved enzyme immunoassay. Med Lab Sci 1982; 39: 351-5.

Stimmler M M, Quismorio F P, McGehee W G, Boylen T, Sharma 0 P. Anticardiolipin antibodies in acquired immunodeficiency syndrome. Arch Intern Med 1989; 149: 1833-5.

Bloom E J, Abrams D I, Rodgers G. Lupus anticoagulant in the acquired immnunodeficiency syndrome. JAMA 1986; 256: 491-3.

Gold J E, Haubenstock A, Zalusky R. Lupus anticoagulant and AIDS. N Engl J Med 1986; 314: 1252-3.

Cohen A J, Phillips T E, Kessler G M. Circulating coagulation inhibitors in the acquired immunodeficiency syndrome. Ann Intern Med 1986; 104: 175-80.

Canoso R T, Zon L I, Groopman J E. Anticardiolipin antibodies associated with HTLV-III infection. BrJ Haematol 1987; 65: 495-8.

Mizutani W T, Woods V L, McCutchan J A, Zvaifler N J. Anticardiolipin antibodies in human immunodeficiency virus (HIV) infected gay males may be associated with a deteriorating clinical course. Arthritis Rheum 1987; 30: S35.

Insall J, Salvati E. Patella position in the normal knee joint. Radiology 1971; 101: 101-4.

Lagier R, Meinecke R. Hyperostose de la crete iliaque. Confrontation anatomo-radiologique. Rev Rhum Mal Osteoartic 1977; 44: 131-4.

Resnick D, Niwayama G. Soft tissues. In: Resnick D, Niwayama G, eds. Diagnosis of bone andjoit disorders with emphasis on articular abnormalities. 2nd ed. Philadelphia, London, Toronto: Saunders, 1988: 4171-294.

Mohr W. Pathologie des Bandapparates. Sehnen Sehnenscheiden Faszien Schleimbeutel. Berlin, Heidelberg, New York, London, Paris: Springer, 1987.

Fritschy D, Gautard R de. Jumper's knee and ultrasonography. Am J Sports Med 1988; 16: 637-40.

Bodne D, Quinn S F, Murray W T, et al. Magnetic resonance images of chronic patellar tendinitis. Skeletal Radiol 1988; 17: 24-8.

Lagier R, Mbakop A, Bigler A. Osteopoikilosis. A radiological and pathological study. Skeletal Radiol 1984; 11: 161-8.