1.Distance between knee anatomic landmarks and the joint line in Chinese people:measurement and characteristic analysis
Tong CHEN ; Tiebing QU ; Jiang PAN ; Yuan LIN ; Zhiwei WANG ; Shixiang REN ; Liang WEN ; Bo ZHANG ; Lei ZHOU ; Desi MA
Chinese Journal of Tissue Engineering Research 2015;(46):7413-7418
BACKGROUND:It is important to maintain the height of joint line in total knee arthroplasty or renovation. Foreign scholars have reported the parameters of the distance from different landmarks to knee joint line, but there is stil a lack of relevant data for Chinese people. OBJECTIVE:To explore the relationships of the knee anatomic landmarks and joint line in normal Chinese, thereby providing clinical evidence for primary total knee replacement and knee renovation. METHODS:Totaly 746 normal knee joints of 409 healthy volunteers from North China and Southwest China were randomly enroled, including 214 males and 195 females, with a mean age of 37.7 years. CT scan was used to reconstruct the three-dimensional knee joint, and the distance between the anatomic landmarks and the joint line was measured using Mimics software. RESULTS AND CONCLUSION:The distance from the center of femoral medial sulcus to the joint line was (25.72±2.52) mm. The distance from the center of lateral femoral condyle prominence to the joint line was (26.30±2.65) mm. The distance from the adduction muscle tubercle to the joint line was (44.60±4.32) mm. The distance from the peak of the tibial tubercle to the joint line was (21.50±3.57) mm. These parameters in male group were significantly higher than those in female group (P < 0.05). In conclusion, these findings provide anatomic evidence for the recovery of joint line in knee replacement or renovation; the variability of the distance from the center of femoral medial sulcus, lateral femoral condyle prominence and adductor tubercle to the joint line is smaler, and therefore, these landmarks have more reference values in total knee arthroplasty.
2. The clinical effects of reverse shoulder arthroplasty for the patients with the cuff tear arthritis
Shixiang REN ; Bo ZHANG ; Desi MA ; Lei ZHOU ; Yuan LIN
Chinese Journal of Surgery 2019;57(2):124-128
Objective:
To analyze the clinical effects of reverse shoulder arthroplasty (RSA) for the patients with the cuff tear arthritis(CTA).
Methods:
A retrospective analysis of 12 patients who had underwent primary RSA for treatment of CTA from January 2012 to June 2017 in Department of Orthopedic, Beijing Chaoyang Hospital, Capital Medical University. There were 8 males and 4 females, aged 69.4 years (range: 64-73 years). The operation was performed in a conventional manner, the subscapularis and biceps tendon were repaired separately.The preoperative and postoperative American shoulder elbow surgeons score and university of California at LosAngeles score of patients were recorded. The complications and the images of radiological examinations were collected. Data were analyzed by paired-samples
3. Early efficacy of lateral unicondylar replacement for lateral compartment osteoarthritis of the knee
Bo ZHANG ; Yuan LIN ; Shixiang REN ; Jiang PAN ; Zhiwei WANG ; Liang WEN ; Tong CHEN ; Lei ZHOU ; Desi MA ; Xiaoxiong ZHAO ; Yang YU
Chinese Journal of Surgery 2020;58(2):125-130
Objective:
To discuss the surgical technique of lateral unicondylar knee replacement (UKR) for patients with lateral compartment osteoarthritis and evaluate its recent clinical efficacy.
Methods:
A retrospective analysis was conducted on 22 cases of lateral compartment osteoarthritis patients receiving lateral UKR at Orthopedic Department, Beijing Chao Yang Hospital, Capital Medical University from January 2016 to January 2019.There were 8 males (8 knees) and 14 females (14 knees), aged 65.7 years(range: 54 to 83 years).All patients completed preoperative imaging examination and excluded extra-articular deformity.Lateral parapelatellar approach was used for the operation and the tibial osteotomy was performed by extramedullary positioning.The residual cartilage of the external condyle was removed by pendulum saw to subchondral bone.Appropriate prosthesis were selected, and the tightness of the gap and the stability of the joints were repeatedly confirmed during the operation.The postoperative complications and the results of physical and imaging examinations were collected.The preoperative and postoperative Oxford knee Score (OKS) and knee society score (KSS) of patients were recorded and compared by paired
4.The matching analysis of the tibial osteotomy and the imported prosthesis components of the Han and Uygur populations
Bo ZHANG ; Kemin LIU ; Tiebing QU ; Jiang PAN ; Yuan LIN ; Zhiwei WANG ; Shixiang REN ; Liang WEN ; Tong CHEN ; Jun LI ; Lei ZHOU ; Desi MA
Chinese Journal of Orthopaedics 2018;38(7):433-441
Objective To compare the anatomical differences of tibia osteotomy between Han and Uygur populations and to analysis their compatibility with imported prosthesis component.Methods Two hundred patients (400 knees) were selected from the outpatients and healthy volunteers of the non-knee joint disease from September 1,2012 to December 1,2014,with 86 men (172 knees) and 114 women (228 knees).The average age is 44.64-10.8 years (range 21-68 years old).According to the populations,the subjects were divided into Han group and Uygur group.Furthermore,each group was divided into male subgroup and female subgroup.A full-length CT scan of the lower limb was conducted to reconstruct the knee joint in the workstation.The tibial osteotomy was simulated in total knee arthroplasty.The transverse diameter of the tibial cross section,the longitudinal depth of the medial platform and the depth of the lateral platform were measured.The front and back diameter and aspect ratio of the osteotomy were calculated.There parameters were compared between the Han and Uygur groups.Five mm tolerance range method was used to analysis the cover rate of the following three kinds of commercially imported prosthesis,namely Depuy,Link and Zimmer.Results The mean value of the tibial cross section were 72.3±4.3 mm,50.7±3.1 mm,47.8±3.0 mm,49.3±2.9 mm and 0.682±0.021 in Han group,while those were 74.5±4.8 mm,51.4±3.0 mm,48.6±2.8 mm,50.0±2.9 mm and 0.672±0.020 in Uygur group,respectively.Except the aspect ratio,the average value of each parameter in Uygur group was greater than that in the Han group with statistically significant differences between the two populations.The cover rate of the three kinds of prosthesis tibial component were 53.0%,37.0% and 40.0% for Han group,but 61.0%,43.0% and 42.5% for Uygur group.Depuy prosthesis was fit for the Uygur population better.Conclusion The geometry and anatomy of proximal tibia in Chinese showed significant difference between Han and Uygur populations.The mean covering rates of the imported tibial components were low in the dimensions of the resected surface.We can improve the prosthesis and the matching degree by adjusting the parameters or increasing the model set.
5. The treatment effect of opening,debridement and double-row fixation using suture anchor for severe patellar tendinopathy
Shixiang REN ; Yuan LIN ; Jiang PAN ; Zhiwei WANG ; Liang WEN ; Tong CHEN ; Xiaoxiong ZHAO ; Desi MA ; Lei ZHOU ; Bo ZHANG
Chinese Journal of Surgery 2019;57(11):824-828
Objective:
To evaluate clinical treatment efficacy of double-row fixation with bridging suture anchors for chronic, severe patellar tendinopathy.
Methods:
A retrospective study of 18 patients suffered from severe patellar tendinopathy and underwent surgical treatment during January 2009 and June 2014 at Department of Orthopedic, Beijing Chao Yang Hospital, Capital Medical University was conducted. All patients had received conservative therapy for more than 6 months(range: 6-30 months) but the effect was unsatisfactory. There were 10 males (12 knees) and 8 females (12 knees)with age of 47.2 years(range: 32-63 years). Seven cases on the left and 17 cases on the right. The surgical treatment included a midline incision at patellar tendon, complete debridement, and double-row fixation with bridging suture anchors. Visual analogue scale(VAS), Lysholm score were collected preoperatively and postoperatively, and compared by paired-