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At least 91 records · Page 5Linked to original sources
PubMed1999

[Long-term outcome of partial alloplastic replacement of the scaphoid bone].

The operative treatment of scaphoid nonunion with a small, sclerotic, or avascular proximal fragment and with accompanying radioscaphoid arthrosis is difficult and often disappointing. Excision of the proximal fragment, styloidectomy, partial replacement of the scaphoid, and insertion of a silicone-rubber lunate prosthesis has been recommended in these cases. From 1980 to 1984, eleven patients (all male, average age 42 [25 to 59] years) with conditions described above were treated by partial replacement of the scaphoid. In one patient, the prosthesis dislocated dorsally and was removed five months later. In another patient, increasing pain at the wrist necessitated a wrist fusion five years after implant replacement arthroplasty. Nine patients remained for evaluation with an average follow-up of 14 years, ranging from 12 to 16 years. Clinical and radiographic studies were performed according to the score proposed by Martini (see p. 153 of this issue). The overall results were satisfactory. The outcome was good in one case, satisfactory in six cases and poor in two cases. The best results could be observed in "subjective estimation" and in "work and sports". The worst results were found in the "X-ray" and "motility" evaluation. In all patients, radiographic and clinical symptoms of silicone synovialitis appeared approximately two years after surgery. This developed adjacent to the implant and later spread throughout the wrist. Simultaneously, carpal collapse and secondary arthrosis of the wrist developed. Only two patients complained of moderate wrist pain at the time of examination. None of the patients desired further treatment. This study shows that in advanced scaphoid nonunion partial replacement of the proximal fragment of the scaphoid with a silicone implant provides long-lasting pain relief and satisfactory hand function. However, progressive carpal collapse (SNAC) and radiocarpal arthrosis developing within four to five years cannot be prevented. Furthermore, severe silicone synovialitis was detected in all patients. Therefore, the procedure was abandoned after 1984.

Adult↗
PubMed1989

Direct coronal CT of the scaphoid bone.

A simple technique is described for the acquisition of coronal computed tomographic images of the wrist without positioning or immobilizing devices. The technique was used in four cases in which the radiographs were equivocal, to assess healing after scaphoid bone fracture or grafting. The greater resolution of the images provided more definitive information about healing.

Carpal Bones↗
PubMed1982

The diagnostic value of displacement of the fat stripe in fracture of the scaphoid bone.

Soft tissue abnormalities on radiological examination can be useful in evaluating injury to various regions. In a retrospective study of X-ray pictures of 125 patients with injury to the wrist, it was possible to demonstrate an abnormal scaphoid fat stripe (SFS) in seventy-three out of seventy-eight cases with fracture of the scaphoid bone, compared to ten out of forty-seven cases without fracture.

Carpal Bones↗
PubMed1987

[Blood supply and function of the scaphoid bone].

The proximal row of carpal bones, including Os scaphoideum, Os lunatum and Os triquetrum, should be considered as a functional unit. The arterial supply stems from branches of the rete carpi dorsale et palmare, which pass through the Ligamentum radiocarpeum dorsale et palmare, respectively. In two-thirds of all cases, the scaphoid bone, the most frequently fractured of the wrist bones, is uniformly vascularized, so that by fracture both fragments retain their blood supply. In the remaining third of all cases, only one end of the scaphoid is supplied arterially. Thus the poorly vascularized fragment frequently becomes necrotic.

Carpal Bones↗
PubMed1983

[Treatment of irreparable scaphoid bone pseudarthrosis and necrosis by partial resection of the scaphoid].

After review of the literature on scaphoid pseudarthrosis and resection, the authors give an evaluation of twenty-five palliative operations for non-reconstructible scaphoid pseudarthrosis, (some in combination with resection of the styloid process). The results were generally good. Failures are found only in cases of insufficient proximal scaphoid resection or of preoperative wrist arthrosis which was too advanced. Partial resection of the scaphoid seems in most cases preferable to the alternative trans-scapho-lunar resection (resection of the lunate and the proximal half of the scaphoid as recommended by Steinhäuser). This bigger intervention seems justified only in cases of advanced arthrosis of the proximal wrist. In cases of severe generalised wrist arthrosis, however, arthrodesis is recommended.

Adult↗