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Biomedical subjects

H Zollinger

Publications and source records attributed to H Zollinger.

At least 55 records · Page 3Linked to original sources
PubMed1978

[Complications of arthroscopy. A review of 3714 cases (author's transl)].

This review is drawn from a total of 3,714 knee arthroscopies carried out on patients from six clinics. The diagnostic value of arthroscopy at this site is established for it can improve prognostication, prevention and treatment of derangements of the knee. The complications of the procedure, both theoretical and in practice, have been considered by subdividing them into four groups. Firstly, the infection rate following arthroscopy alone was nil. Secondly, minor articular cartilage damage attributable to the instrument occurred in just over 2% of cases. This complication is more common when the technique is first being learned and is usually avoidable when experience has been gained. Thirdly, complications of a general nature included four cases of subcutaneous emphysema produced by the insufflation of gas, and 22 instances of an allergic skin reaction to the disinfectant preparation. Finally, failures in the technique itself resulted from the instrument bending or breaking when negotiating the condyles. This occurred on 26 occasions. In a further seven instances the fat pad was entered and distended in error, thus preventing examination of the joint. Overall, the complication rate was acceptable low and confirmed that arthroscopy can be safely applied clinically.

Cartilage, Articular↗
PubMedDate not supplied

MRI of the foot and ankle: diagnostic performance and patient acceptance of a dedicated low field MR scanner.

The objective of this study was to compare image quality and patient acceptance of a dedicated .2-T MR system and a 1.0-T whole body system. Forty-one consecutive patients referred for MRI of the foot or ankle were prospectively examined with a dedicated .2-T low field system and a 1.0-T whole body system. Images were evaluated qualitatively by two observers and quantitatively using signal-difference-to-noise ratios. The patients were interviewed with respect to positioning, examination time, noise, claustrophobia, confidence in the diagnosis, and willingness to repeat the examination, using a questionnaire. The qualitative score was significantly higher for the 1.0-T system (2.6 vs 2.2 for reader 1 [P = .008] and 2.6 vs 1.7 for reader 2 [P < .0001]), respectively). The signal-difference-to-noise ratios were also superior for the 1.0-T MR system (2.96 vs .88, P < .0001). However, 96% of the lesions visualized at 1.0 T were also detected with the low field system. Patient acceptance was significantly better for the 1.0-T MR scanner (48.6 vs 43.9, P = .007). Image quality of the dedicated low field system was inferior to the 1.0-T system using objective parameters, and patients did not prefer the low field system. Although only 4% of lesions were missed in this series, the low field MR system can only be recommended when funding is limited and the available space is limited.

Adult↗
PubMedDate not supplied

[Surgical fusion of the subtalar joint--changing concepts in changing times].

Triple arthrodesis respects the functional unit of the subtalar joint, but shows several intraoperative difficulties such as surfaces of resection that are too large or wrong positions between the hind and the middle foot. Furthermore postoperative problems like walking on uneven pavements, a reduced range of motion in the adjacent joints and the development of osteoarthritis of the ankle are not easy to deal with. Therefore isolated fusions of the talocalcaneal, talonavicular and calcaneo-cuboidal joint with a minimal resection technique seem to present several advantages. Among them we would mention a minimal reduction of the range of motion, the preservation of a physiological position of the adjacent joints and the prevention of osteoarthritis in the adjacent joint which rarely appears and when it does only in an asymptomatic form. The subtalar implants and the astragaloplasty as possibilities to treat disorders of the subtalar joint complex are also discussed.

Arthrodesis↗
PubMedDate not supplied

[Diagnosis and therapy of Paget's osteodystrophy deformans of the hip].

Of 78 patients with Paget's Disease of the hip at the Balgrist clinic, one-half are free of pain; the other one-half have symptoms. The complaints are caused primarily by secondary bone and joint pain in cases with deformities and fractures of the proximal femur, or arthroses or protrusion of the hip joint, which necessitated surgical intervention in 15 cases (14 patients). The changed consistency of the bone may lead to problems as regards surgical technique and increased loosening of joint prostheses, and the increased bleeding tendency occasionally to hematomas and wound healing disorders or infection. Healing of fractures and consolidation of osteotomies are within normal time limits. Osteotomy corrections have been found durable.

Aged↗
PubMedDate not supplied

[Magnetic resonance imaging of the foot].

We evaluated the diagnostic value of magnetic resonance imaging retrospectively in 72 patients (76 examinations). 10 examinations were normal, 2 showed normal variants, 21 inflammatory disease, 2 osteoarthritis, 7 neoplasia, 21 traumatic changes, 3 pathology in systemic disease, 5 avascular necrosis, 5 iatrogenic changes. When considering the original reports, accuracy had been 72.4%, sensitivity 75%, specificity 62.5%. After review of the hard copies several diagnoses were revised, improving the values to 86.6%, 84.4% and 100% respectively. Compared with other radiologic examinations the main advantages of magnetic resonance imaging were its high contrast resolution and the free choice of the imaging plane. The main disadvantages were the reduced spatial resolution compared to CT and the significantly worse definition of calcification and cortical bone. In conjunction with other radiologic and clinical examinations magnetic resonance imaging played an important role in the examination of avascular necrosis, inflammation, tendon pathology and neoplasia.

Adolescent↗
PubMedDate not supplied

[Lateral ligament replacement of the ankle joint--cialit graft or tendon graft? A comparative clinical study from the Balgrist Orthopedic University Hospital, Zürich].

Of a total of 268 patients who were operated because of ankle instability, 125 who were treated with cialit skin graft and 101 who received a peroneal tendon graft were interrogated. 36 were clinically and radiologically examined. Apart from some very minor disturbances, neither during the period immediately after surgery nor later, were the subjective or objective results significantly different. This observation demands that no surgical technique should be employed that could interfere with the function of proprioceptive or constraining structures.

Adolescent↗