Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Jan 2000
Results of arthroscopic joint debridement in different stages of chondromalacia of the knee joint.
A retrospective study was performed of 161 patients who had undergone arthroscopic operation for chondromalacia of the knee joint. After an average follow-up period of 40 (range 10-72) months, patients with severe articular cartilage lesions who had undergone articular lavage alone showed significantly poorer results (P < 0.001). With the same stage of chondromalacia and having undergone the same surgical procedure, younger patients showed better results than older patients. ⋯ One of every 6 patients received a knee joint prosthesis within the 1st year. Therefore, the patients' preoperative expectations have to be clearly objectified. The surgical procedure as an operation with a low complication risk can also be justified as a temporary alternative to total knee arthroplasty in patients suffering from a high-grade degeneration of the joint.
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Synovial chondromatosis is an uncommon lesion, characterised by cartilaginous and osseous metaplasia of the joint synovium. It usually involves a large joint and rarely occurs in the hand. A case of tenosynovial chondromatosis of the third finger is reported.
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A patient who suffered from severe deforming arthritis secondary to chronic tophaceous gout with multilobular, solid, tender, enlarged subcutaneous nodules and draining tophi in both hands was evaluated and treated by second ray amputation of the most deformed second finger to provide a more functional result.
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Arch Orthop Trauma Surg · Jan 2000
Evaluation of core decompression for early osteonecrosis of the femoral head.
Twenty-six hips (19 patients) with osteonecrosis of the femoral head with stage I or II of the disease, according to the Ficat and Arlet classification, underwent core decompression. Osteonecrosis was confirmed histologically in all 26 hips. Of 19 patients, 7 had prognostic factors traditionally associated with poor outcome including collagen vascular disease and continued use of steroids. ⋯ Of the 12 hips in patients who had used steroids, 6 hips (50%) were converted to THA. Four hips in patients with systemic lupus erythematosus (SLE) needed THA (100%). We conclude that core decompression provides an effective treatment for steroid-associated osteonecrosis other than in cases with SLE, as well as providing effective treatment for non-steroid-associated osteonecrosis in the early stages of the disease.
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Arch Orthop Trauma Surg · Jan 2000
Case ReportsBone remodelling in humeral arthroplasty: follow-up using CT imaging and finite element modeling--an in vivo case study.
Little material is available in the literature about remodelling of the human humerus after implantation of a shoulder hemiarthroplasty. A 73-year-old patient was examined by CT 4 years after implantation of a right shoulder hemiarthroplasty, and the bone density as represented by Hounsfield values was compared with the contralateral side. Additionally, a three-dimensional finite-element model was generated from the image data and analysed. ⋯ Distally from the prosthesis, high stresses were found. On the control side, a more homogeneous stress distribution was noted. The results could be explained by bone resorption around the prosthesis caused by stress shielding; this hypothesis has to be confirmed by future studies.