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[Technic and results of tendon interposition arthroplasty of the lunate and scaphoid bones].

Between 1971 and 1982 tendon interposition arthroplasty in combination with denervation of the wrist joint was performed on 55 patients with either Kienböck's disease, irreducible lunate dislocations with or without scaphoid dislocation, or scaphoid non-union with a small proximal fragment. Follow-up was possible on 38 patients (69%). In two third of the cases good and very good results are achieved with this operative technique. The significant points were the arthrosis in the wrist joint and the complete obliteration with tendon material of the cavity left by the extirpated carpal bone. Ulnar styloidectomy produced not only a painfree wrist but also better ulnar movement.

Adolescent↗

[Rupture of the tendon of the m. flexor pollicis longus--a rare complication after surgery on the scaphoid bone].

Tendon ruptures in the hand without previous direct trauma are rare. Two cases are reported on with attrition of the flexor pollicis longus tendon. The first tendon rupture was along a dislocated cortico-cancellous bone graft following a Matti-Russe procedure; the second was by attrition over the screw of an AO-plate following internal fixation in scaphoid nonunion. Immediate tendon repair by interposition of a short tendon graft or by transposition of the superficialis flexor tendon of the ring finger is the treatment of choice. Further tendon ruptures can arise if surgical intervention is delayed.

Adult↗

Dysplasia epiphysealis hemimelica of the scaphoid bone.

We report a rare case of dysplasia epiphysealis hemimelica (DEH) in the wrist of a 7-year-old boy. Clinical, radiological and histopathological manifestations are discussed. The correct diagnosis of DEH, however, was made by the confrontation of the radiological and pathological data. The radiologist should inform the pathologist correctly about the imaging findings in order to avoid misdiagnosis of the lesion as osteochondroma.

Carpal Bones↗