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The Journal of Bone & Joint Surgery British Volume
Vol. 82-B, Issue 3 | Pages 399 - 403
1 Apr 2000
Brodner W Krepler P Nicolakis M Langer M Kaider A Lack W Waldhauser F

Scoliosis seen in the chicken after pinealectomy resembles adolescent idiopathic scoliosis in man. It has been suggested that in both species, deficiency of the pineal hormone, melatonin, is responsible for this phenomenon.

In nine patients with adolescent idiopathic scoliosis and in ten age- and gender-matched controls, the circadian levels of serum melatonin and the excretion of urinary 6-hydroxy-melatonin-sulphate, the principal metabolite of melatonin, were determined. There were no statistically significant differences in the secretion of serum melatonin or the excretion of urinary 6-hydroxy-melatonin-sulphate between the patients and the control group. The hypothesis of melatonin deficiency as a causative factor in the aetiology of adolescent idiopathic scoliosis cannot be supported by our data.


The Journal of Bone & Joint Surgery British Volume
Vol. 73-B, Issue 2 | Pages 229 - 234
1 Mar 1991
Lack W Windhager R Kutschera H Engel A

Of 142 Chiari pelvic osteotomies for osteoarthritis in dysplastic hips, most performed by Chiari himself, we were able to review 82 and obtain information about 18 by questionnaire. All patients were over 30 years of age at operation; follow-up averaged 15.5 years. Twenty hips had undergone secondary total hip replacement. The outcome was good in 75%, fair in 9% and poor in 16%. High osteotomies all gave good results, and the result also depended on adequate medialisation. Statistics were worse for patients over 44 years of age at the time of operation. For osteoarthritis secondary to hip dysplasia, the Chiari pelvic osteotomy is an alternative procedure to early hip replacement. In contrast to intertrochanteric osteotomy, it has the advantage of facilitating the implantation of an acetabular prosthesis should arthroplasty become necessary at a later stage.


The Journal of Bone & Joint Surgery British Volume
Vol. 69-B, Issue 2 | Pages 335 - 337
1 Mar 1987
Lack W Bosch P Arbes H

Twenty-nine bone defects caused by chronic osteomyelitis have been treated by radical excision of necrotic bone followed by packing the cavities with cancellous homografts held in position by a fibrin sealant. At follow-up three years after operation all except one had healed, though one case had needed a repeat operation. Good incorporation and remodelling of the grafts was observed even when the osseous bed was severely sclerosed.