[Coronal lower limb alignment in total knee arthroplasty].

Many factors contribute to a successful total knee arthroplasty, and postoperative coronal lower limb alignment has always been a focus of joint surgeons. Previous researches have suggested that neutral alignment can bring higher prosthesis survival rate and better knee function. However, the theory has been challenged in recent years.In this article, the author introduces the axis, alignment and osteotomy of total knee arthroplasty briefly and reviews the studies on the neutral alignment and kinematic alignment of recent years in order to provide some advice for the clinical operation.

[Total hip arthroplasty in patients with Psoriatic arthritis].

Objective: To evaluate the clinical efficacy of Total hip arthroplasty (THA) in treating the hip joint involvement of Psoriatic arthritis (PsA). Methods: From January 2005 to December 2016, a total of 15 PsA patients (20 hip joints) underwent THA in Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College. All the patients had obvious restriction in daily life before operation. The mean Harris score was 25.2 averagely and the mean total range of the hip joint movement was 39.6° before surgery. All the prosthesis were biotype and ceramic to ceramic. Results: All patients were followed up with an average of 35.7 months and could take care of themselves. The Harris score of hip joint was 83.2 averagely, including 15 hips excellent, 3 good, and 2 passable, with an excellent and good rate of 90%. The mean total range of the hip joint movement was 175° after surgery. There was no infection, nerve injury or loosening of the prosthesis. 1 hip appeared avulsion fracture of greater trochanter of femur, and the joint function was satisfying at the last time of follow-up. Conclusion: THA is an effective method in treating affected hip joint of PsA. It can restore the hip function and improve the life quality of the PsA patients.

[Orthopedic treatment of musculoskeletal disorders in hemophilic patients].

Objective: To study the orthopedic treatment strategy for hemophilia complicated with musculoskeletal disorders as well as the peri-operative consumption of clotting factor. Methods: Total 338 orthopedic surgeries were performed for 261 patients, average age of 30.6 y (6-65 y) , with hemophilia between January 1996 and December 2019 at our institute. Two hundred and twenty-six patients presented with bleeds within the joints. Sixty-one patients presented with intramuscular bleeds, 45 presented with hemophilic pseudotumors, and six presented with miscellaneous complaints. Strategy of clotting factor replacement therapy was designed as per differences in the level of the operation procedure. Information regarding clinical manifestation, operative strategy, clotting factor consumption, and re-operation for complications was retrospectively recorded. The costs for multiple joint procedure and single joint procedure were studied. Results: We found that 270 of the 338 surgical procedures were major surgical procedures (79.9%) . There were 203 procedures of joint arthroplasty (60%) . Fourteen patients underwent reoperations for local recurrence (4.2%) . The average factor Ⅷ consumption before the surgery was 44.4 ± 8.1 IU/kg. The average FⅧ consumption within postoperative 2 weeks was 40 962 IU (647±177 IU/kg) . Seven type A hemophilic patients developed F Ⅷ inhibitor following the surgical procedure, with an average level of 13.7±11.2 BU/mL. Sixty-eight patients underwent multiple joint procedures under one anesthesia session (26%) . There was no significant difference in the factor consumption between the multiple joint procedure and single joint procedure. Conclusions: Surgical treatment was found to be effective for hemophilic arthropathy and lesion of the musculoskeletal apparatus, with the clotting factor replacement therapy. Multiple joint procedures under one anesthesia were more cost effective for patients with hemophilia, with less factor consumption than staged single joint procedure.

Is intralesional resection suitable for central grade 1 chondrosarcoma: A systematic review and updated meta-analysis.

BACKGROUND: The surgical choice for grade 1 chondrosarcoma has been debated for decades. Intralesional resection can minimize the damage caused by surgery and offer better functional outcome. However, controversy remains about whether it will result in higher rates of local recurrence and metastasis, fewer complications, and better functional outcome compared with resection with wide margin. This systematic review and updated meta-analysis therefore compared intralesional resection and resection with wide margin in terms of local recurrence, metastasis, complications, and functional outcome. METHODS: Medline, Embase, and the Cochrane Library were comprehensively searched in December 2016 to identify studies comparing intralesional resection and resection with wide margin for central grade 1 chondrosarcoma. Data of interest were extracted and analyzed using Review Manager 5.3. RESULTS: Ten studies involving 394 patients were included, with 214 patients who had intralesional resection and 180 patients who had resection with wide margin for grade 1 chondrosarcoma. Intralesional resection was associated with lower complication rates (P < 0.0001) and better Musculoskeletal Tumor Society score (MSTS). There were no significant differences in terms of overall local recurrence (P = 0.27), local recurrence based on adjuvant therapies (P = 0.22), local recurrence in studies that included lesions of the hand, foot, pelvis, and axial skeleton (P = 0.55), and metastasis (P = 0.74) between groups. CONCLUSION: Intralesional resection provides lower complications and better functional outcome with no significant increase in the risk of recurrence and metastasis. We think it is a suitable treatment for central grade 1 chondrosarcoma.