Knee rotation-plasty for malignant musculoskeletal tumors occurring around the knee joint.
BACKGROUND
In addition to the wide excision of malignant musculoskeletal tumor around the knee joint, surgical methods, such as total knee arthroplasty and knee rotation-plasty are available. Therefore, this study was undertaken to clarify the usefulness of knee rotation-plasty.


METHODS
At the Chiba Cancer Center, knee rotation-plasty was performed in 27 patients with malignant musculoskeletal tumor around the knee joint. Patients were divided into two groups: Group S, in which operations were performed as salvage surgery (8 patients), and Group I, in which operations were performed as initial surgery (19 patients). The lower limb function was investigated in 17 patients (7 patients in Group S and 10 patients in Group I). The lower limb function was assessed by the Knee Evaluation System of International Symposium on Limb Salvage and the Knahr's assessment.


RESULTS
Lower limb function in Group S measured an average of 25.7 points (85.6%), while the lower limb function in Group I measured an average of 23.6 points (78.7%). The majority of patients in both groups were capable of walking without a cane or doing light exercise with below-the-knee prosthesis, revealing good lower limb function.


CONCLUSIONS
Whether it is performed as salvage or initial surgery, knee rotation-plasty can be useful method for reconstruction of the knee after wide excision of malignant musculoskeletal tumor around the knee joint.
Yonemoto
T
T
Division of Orthopaedic Surgery, Chiba Cancer Center, 666-2 Nitona-cho, Chuo-ku, Chiba, 260-8717, Japan. tyonemot@chiba-cc.pref.chiba.jp
Tatezaki
S
S
Ishii
T
T
D000293:Adolescent; D000328:Adult; D000843:Ankle Joint / Q000601:surgery*; D019645:Arthroplasty, Replacement, Knee / Q000379:methods* / Q000523:psychology / Q000534:rehabilitation; D001186:Artificial Limbs / Q000523:psychology; D001859:Bone Neoplasms / Q000601:surgery*; D002648:Child; D005260:Female; D005266:Femoral Neoplasms / Q000601:surgery; D005354:Fibrosarcoma / Q000601:surgery; D005500:Follow-Up Studies; D018219:Histiocytoma, Benign Fibrous / Q000601:surgery; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012516:Osteosarcoma / Q000601:surgery*; D010027:Osteotomy / Q000379:methods* / Q000534:rehabilitation; D010342:Patient Acceptance of Health Care; D011474:Prosthesis Design; D011788:Quality of Life; D019651:Plastic Surgery Procedures / Q000379:methods* / Q000523:psychology / Q000534:rehabilitation; D012086:Reoperation; D012399:Rotation; D016879:Salvage Therapy; D013584:Sarcoma, Synovial / Q000601:surgery; D013977:Tibia / Q000601:surgery; D016896:Treatment Outcome