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1.
Knee ; 11(3): 209-12, 2004 Jun.
Article in English | MEDLINE | ID: mdl-15194097

ABSTRACT

Localisation of the femoral head centre (FHC) during total knee arthroplasty (TKA) is necessary when assessing the overall alignment of the leg using an extramedullary guide for the femur. On-table radiographs for this purpose are time consuming and inconvenient. We describe a clinical method for estimating the FHC: it is marked 1.5 cm lateral to the point where the femoral artery crosses the line joining the pubic tubercle and the anterior superior iliac spine. Using this method the estimated FHC was within 15 mm of the anatomic centre in 84% of cases, and within 24 mm in 99%. This translates into possible knee alignment errors of 2 degrees and 3 degrees, respectively. As alignment error of up to +/-3 degrees is compatible with satisfactory clinical results of TKA, our method provides useful approximation of the FHC. For greater accuracy however, an on-table radiograph is recommended.


Subject(s)
Arthroplasty, Replacement, Knee/methods , Femur Head/anatomy & histology , Female , Femur Head/diagnostic imaging , Hip Joint/anatomy & histology , Hip Joint/diagnostic imaging , Humans , Male , Radiography
2.
Chemosphere ; 51(8): 811-6, 2003 Jun.
Article in English | MEDLINE | ID: mdl-12668040

ABSTRACT

The inclusion complexes of beta-cyclodextrin-isoproturon were prepared using techniques such as kneading, co-evaporation, and co-precipitation. These complexes were characterised for physical properties and spectral studies such as UV, FTIR, and 1HNMR spectroscopy. To investigate the stoichiometry of the complexes Phase solubility method was adopted. Most of the complexes showed an increase in the dissolution rate of the herbicide. The best results were obtained when inclusion complexes were prepared by co-precipitation and co-evaporation method. Findings of this paper will allow the rational use of isoproturon with increase in its efficacy.


Subject(s)
Carcinogens/chemistry , Cyclodextrins/chemistry , Herbicides/chemistry , Methylurea Compounds/chemistry , Phenylurea Compounds , beta-Cyclodextrins , Magnetic Resonance Spectroscopy , Solubility , Spectroscopy, Fourier Transform Infrared
4.
Knee ; 8(3): 247-8, 2001 Oct.
Article in English | MEDLINE | ID: mdl-11706735

ABSTRACT

The anterior recurrent branch of the anterior tibial artery is vulnerable during high tibial osteotomy. It may be injured during subperiosteal elevation of soft tissue from the lateral tibia--necessary for visualisation of the osteotomy or for placing the fixation device; or during excision of the infero-medial aspect of the fibular head--necessary to facilitate closure of the osteotomy. Recurrent bleeding from the operation site should draw attention to the possibility of a pseudo-aneurysm. Angiography helps in making an accurate diagnosis. Ligation of the feeding vessels provides effective treatment.


Subject(s)
Aneurysm, False/complications , Osteotomy , Tibia/surgery , Tibial Arteries , Humans , Male , Middle Aged
7.
J Bone Joint Surg Br ; 81(4): 663-6, 1999 Jul.
Article in English | MEDLINE | ID: mdl-10463741

ABSTRACT

In two years we treated four women with ununited stress fractures of their proximal tibial diaphyses. They all had arthritis and valgus deformity. The stress fractures had been treated elsewhere by non-operative means in three patients and by open reduction and internal fixation in one, but had failed to unite. After treatment with a modular total knee prosthesis with a long tibial stem extension, all the fractures united. A modular total knee prosthesis is suitable for the rare and difficult problem of ununited tibial stress fractures in patients with deformed arthritic knees since it corrects the deformity and the adverse biomechanics at the fracture site, stabilises the fracture and treats the arthritis.


Subject(s)
Arthroplasty, Replacement, Knee , Fractures, Stress/surgery , Fractures, Ununited/surgery , Joint Deformities, Acquired/etiology , Osteoarthritis, Knee/complications , Tibial Fractures/surgery , Aged , Aged, 80 and over , Female , Fractures, Stress/complications , Fractures, Ununited/complications , Humans , Joint Deformities, Acquired/complications , Tibial Fractures/complications
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