[Are non-radical interventions in giant cell tumors justifiable?]. / Sind unradikale Eingriffe bei Riesenzelltumoren vertretbar?

Eleven patients treated for giant cell tumors between 1966 and 1988 were followed up. Excochleations, i.e., thorough curettage and filling with spongiosa, were performed as a primary procedure in nine cases. Of these, en-bloc excision with Juvara plasty and amputation of the distal portion of the lower leg were necessary in one case each a week after confirmation of malignant degenerations. The mean duration of follow-up was 10.5 years; two recurrences were found among seven excochleations and one among four excisions. Taking function disturbances and their avoidance into account, excochleation and spongiosa filling appear justifiable as a form of primary therapy.

[Is fracture healing in the presence of biocompatible implant materials tantalum and niobium different in comparison to steel implants?]. / Ist die Knochenbruchheilung bei den gewebeverträglichen Implantatwerkstoffen Tantal und Niob gegenüber Stahlimplantaten verändert?

It was our intention to investigate whether biologically inert metals like Tantal and Niob can influence fracture healing. Two series of tests - one septic and one aseptic - each with 18 rabbits were set up. An iatrogenic fracture of the tibia was intramedullary fixed with Niob-, Tantal- and steel-wire. Our aseptic cases didn't show any influence on the undisturbed secondary fracture healing. In all of our cases in which we provoced an osteitis a more intensive neoformation of bone occurred in those cases in which Tantal wire was implanted.

[Etiology and therapy of clavicular-pseudarthrosis (author's transl)]. / Zur Atiologie und Therapie bei Schlüsselbeinpseudarthrosen.

The fracture of the clavicle is regarded as one of the most common fractures. Reports on Pseudarthrosis are very seldom. Our follow-up studies allowed us the following-conclusions: 1. In spite of insufficient immobilisation pseudarthrosis is seldom reported. 2. Healing of the pseudarthrosis can only be accomplished operatively. 3. In biologically active pseudarthrosis compression plating achieved best results. 4. Even with pseudarthrosis the functional result can be excellent. 5. Indications for surgery of clavicular pseudarthrosis should be determined a) in heavy labourers or active athletes, b) in cases of complications resulting directly from clavicular pseudarthrosis (e.g. Plexus irritation, stenosis of the subclavius vessels).

[Late conditions following mild anterior tibial syndrome]. / Spätzustände nach blandem Tibialis anterior-Syndrom.

Two cases are reported of late condition after mild anterior tibial compartment syndrome often seen by orthopaedists, particularly after fracture of the lower leg. Pathophysiology, causes, clinical representation, diagnosis and differential diagnosis, as well as the therapy of this still relatively unknown syndrome are discussed. Simple equipment for measuring the pressure in the compartment is introduced. The importance of early diagnosis is emphasised.

[The treatment of forearm-fractures in adults (author's transl)]. / Zur Behandlung der Unterarmschaftfrakturen beim Erwachsenen.

Our present report concerns 1264 lower arm, radius and ulna fractures, treated between 1971 and 1978. 1107 were treated conservatively, 157 operatively, 75 of the operatively treated fractures were treated by intramedullary fixation after reduction, 73 with plates and screws, in 7 cases we chose oblique pin fixation, in 2 transverse wires were placed, then casted. The individual cases are critically analysed and comparisons drawn relative to the different methods. Depending upon the general conditions of the patients, other injuries and anatomical variations of the fracture, the choice was made to treat conservatively or operatively. Our methods are discussed and compared with reference to our own cases and the world literature.