Volar fixation for dorsally angulated extra-articular fractures of the distal radius: a biomechanical study

PURPOSE: To compare the biomechanical properties of 10 volar plate-fixation designs in 2 fracture models (dorsal wedge osteotomy, segmental resection osteotomy models). METHODS: Forty-eight radiuses were used in this study including 8 pairs. In 40 specimens a 15-mm dorsally based wedge osteotomy was performed and the volar cortex was fractured manually. They were arranged into 10 fixation groups with 5 different fixation designs (test 1). In the contralateral specimens of 8 paired radiuses a 10-mm segment of bone was excised (test 2). Four of the 10 fixation systems were chosen for these specimens. Cadaver hands and the proximal radiuses were potted in polymethylmethacrylate and tested with a servohydraulic materials testing machine with 300 N of axial compression load at 1 N/s initially and after each 1,000 cycles up to 5,000 cycles. After cyclic loading the specimens were loaded to failure in axial compression at 2 mm/min. The stiffness, failure peak load, and failure mode of each specimen were recorded. RESULTS: In test 1 in the wedge osteotomy specimens the T plate was the stiffest and the Synthes titanium plate was the least stiff; however, all specimens completed the 5,000 cycles of loading with no failures. There was no significant difference between the 10 fixation groups in failure peak load and only 7 of 40 failed at the distal portion of the hardware in the final load to failure testing. In test 2 the resection osteotomy specimens were less stiff and failed at a lower failure peak load compared with the wedge osteotomy specimens. Failure at the distal portion of the fixation system was seen in 7 of 8 specimens; nonlocking screws loosened and tines compressed the surrounding bone, resulting in tine-hole enlargement. CONCLUSIONS: All of the plate-fixation systems delivered sufficient stability to permit the simulated postoperative regimen of 1 week of immobilization followed by 5 weeks of early mobilization until expected union at 6 weeks after surgery. Based on these results a preferable volar fixation system would appear to benefit from the following: (1) sufficient plate strength to support the distal fragment from the volar side, (2) a locking system with sufficient strength to remain locked during the healing process, and (3) a distal design that does not affect the bone adversely. The anatomic reduction of the volar cortex in the wedge osteotomy specimens added stability to the construct.     

掌侧入路斜T形钢板内固定治疗桡骨远端不稳定骨折

目的探讨掌侧入路斜T形钢板治疗桡骨远端不稳定骨折的临床疗效。方法对25例桡骨远端不稳定骨折采用掌侧入路斜T形钢板内固定并植骨治疗。结果 25例均获得随访,时间6～18个月。X线片显示骨折全部愈合。根据Gartland-Wefley腕关节评分标准进行评估:优18例,良5例,可2例。结论对于桡骨远端不稳定骨折,采用掌侧入路斜T形钢板内固定辅以植骨,既能使骨折复位、固定满意,又有利于术后早期手和腕部的功能康复锻炼,是治疗不稳定性桡骨远端骨折的有效方法。     

Percutaneous pins versus volar plates for unstable distal radius fractures: a biomechanic study using a cadaver model

PURPOSE: A biomechanic study using a cadaver model of a dorsally unstable distal radius fracture was used to compare the stability of percutaneous pinning and volar fixed-angle plating. Among the many surgical options for treating distal radius fractures are percutaneous pinning and internal plate fixation. Although percutaneous pin fixation requires less soft-tissue trauma and has low complication rates, plate fixation allows for early active movement with good clinical results. The biomechanic stability of these 2 methods was studied by using a cadaver model of a dorsally unstable intra-articular distal radius fracture. METHODS: This study was performed on 7 fresh-frozen cadaver arms, in each of which an unstable intra-articular fracture with dorsal comminution was created. The fracture was first fixed with 0.062-mm K-wires inserted in standard crossed fashion and was tested in a pneumatic loading device that indirectly loaded the wrists through the 5 motor tendons 3 times at each level of force in flexion and extension. Testing was then repeated after removal of the pins and fixation with a fixed-angle DVR distal volar radius plate system (Hand Innovations, Inc., Miami, FL). Testing was performed in flexion up to 68 N and in extension up to 100 N, and the distance across the fracture site was measured. RESULTS: Volar plating was significantly more stable than pinning, with an average movement across the fracture site of 2.51 mm for pin fixation and 1.07 mm for plate fixation. The pins also showed a substantial degree of slipping after repeated stressing, but the plates remained stable. CONCLUSIONS: These results show the superior biomechanic stability of internal fixation using plates for dorsally comminuted intra-articular distal radius fractures in this cadaver model. Further clinical correlations are needed.     

掌侧钢板固定治疗不稳定的背侧移位桡骨远端骨折

[目的]初步探讨掌侧钢板（locking compression plate，LCP）固定治疗不稳定、背侧移位桡骨远端骨折的方法及其效果。[方法]回顾性分析掌侧LCP结合克氏针撬拨、植骨等技术治疗不稳定、背侧移位桡骨远端骨折35例，比较研究手术前后掌倾角、尺偏角、桡骨短缩及关节活动范围等，初步评价其临床疗效。[结果]经随访9-24个月（平均17个月），掌倾角、尺偏角、桡骨短缩均获明显改善，腕关节功能按Sarmiento标准评定，优20例、良12例、可2例、差1例。[结论]对不稳定、背侧移位桡骨远端骨折，掌侧LCP是一种安全有效的治疗方法，可有效防止复位丢失、减少结构性植骨、避免肌腱激惹等并发症。     

掌侧锁定加压钢板治疗桡骨远端背侧不稳定性骨折

[目的]探讨掌侧入路“T”形锁定加压钢板（T-LCP）治疗桡骨远端背侧不稳定性骨折的初期疗效。[方法]总结2003年9月～2005年11月经掌侧入路T-LCP内固定治疗桡骨远端背侧不稳定性骨折9例。男3例，女6例，年龄52～74岁，平均63．5岁。按AO分类标准：B2型2例，B3型1例，C1型2例，C2型3例，C3型1例，均为闭合性骨折。所有病例均采取掌侧入路，术中不显露背侧组织，骨缺损严重者置入人工骨（Osteoset）。[结果]9例全部获得随访，平均10．7个月（6～17个月）。X线片显示骨折全部Ⅰ期愈合，平均愈合时间为7周。1例骨缺损严重，术中置入人工骨（Osteoset）。所有病例均无感染、骨不连、钢板松动、腕管综合征、正中神经炎等并发症。术后功能康复时间6～29周，平均12．5周。术后第1d开始被动活动腕关节，1周后主动活动，功能锻炼。按改良的Mcbride腕关节功能评价标准：优7例，良1例，可1例，优良率为88．9％。[结论]经掌侧入路T-LCP治疗桡骨远端背侧不稳定骨折，内固定可靠，允许早期功能锻炼，疗效佳。     

Biomechanical comparison of fixed-angle volar plate versus fixed-angle volar plate plus fragment-specific fixation in a cadaveric distal radius fracture model

PURPOSE: To test the hypothesis that combining orthogonal fragment-specific fixation with volar fixed-angle fixation provides markedly higher interfragment stability and construct strength compared with volar fixed-angle fixation alone. METHODS: Eight matched pairs of fresh cadaveric hand and forearm specimens were potted upright in cement. Flexor and extensor tendons were isolated at insertion sites and sutured into a looped bundle for loading in flexion and extension, respectively (up to 61 N). Osteotomies to simulate an AO type C2, 3-part fracture pattern were created with a saw. One randomized specimen from each pair received a locking volar plate and a radial pin plate (VP+PP), and the other received a locking volar plate only (VP). The relative angular displacements between the radial, ulnar, and proximal fragments were obtained with a motion analysis system. After stability tests, specimens were compressed to failure in a wrist-extended position on a material testing machine. Paired t tests were used to compare the interfragment displacement, construct stiffness, and strength between the 2 groups. RESULTS: Comparing fragment displacement in the VP+PP and VP groups showed that with flexion-extension and radial-ulnar deviation, distal fragment displacement was reduced to a statistically significant degree. The VP+PP group also showed higher failure strength and construct rigidity than the VP group. CONCLUSIONS: In a simulated cadaveric model of the distal radius intra-articular fracture, the combined technique of fragment-specific plating with volar fixed-angle fixation alone provides superior biomechanical strength and stability over the volar fixed-angle fixation alone.     

Volar versus dorsal locking plates with and without radial styloid locking plates for the fixation of dorsally comminuted distal radius fractures: A biomechanical study in cadavers

PURPOSE: To compare the stability and stiffness of dorsal and volar fixed-angle distal radius constructs in a cadaveric model. METHODS: A locking distal radius system was used in a combination of a dorsal and styloid plate (group 1), a single volar plate (group 2), and a combination of a volar and styloid plate (group 3) configuration. In addition a single volar 3.5-mm steel locking plate was used in group 4. Each construct was tested on 6 fresh-frozen radii with simulated unstable dorsally comminuted extra-articular distal radius fractures. Specimens were tested on a material testing machine with an extensometer and subjected to axial compression fatigue and load-to-failure testing. RESULTS: No construct failed in fatigue testing of 250 N for 5,000 cycles. Two specimens in each group were tested for 20,000 cycles without failure. The plastic deformation in the double-plate groups was lower compared with the single-plate groups, although the difference was not statistically significant. Group 1 had the highest and group 4 the lowest failure load and stiffness, respectively. The differences between group 1 and the other groups, except failure load compared with group 3, were statistically significant. Groups 2 and 3 had a significantly higher load to failure and group 3 had a significantly higher stiffness compared with group 4. CONCLUSIONS: All constructs offer adequate stability with minimal deformation on fatigue testing under physiologic conditions. Dorsal fixed-angle constructs are stiffer and stronger than volar constructs. The addition of a styloid plate to a volar plate did not significantly improve stability in this model of simulated extra-articular dorsal comminution loaded in axial compression.     

Volar fixed-angle plating of distal radius extension fractures: influence of plate position on secondary loss of reduction--a biomechanic study in a cadaveric model

PURPOSE: Treatment of extension fractures of the distal radius with volar fixed-angle plates has become increasingly popular in the past 2 years. It has been observed clinically that placement of the distal screws as close as possible to the subchondral zone is crucial to maintain radial length after surgery. The purposes of this study were (1) to evaluate radial shortening after plating with regard to plate position and (2) to evaluate whether plate position has an influence on the strength and rigidity of the plate-screw construct. METHODS: An extra-articular fracture (AO classification, A3) was created in 7 pairs of fresh-frozen human cadaver radiuses. The radiuses then were plated with a volar distal radius locking compression plate. Seven plates were applied subchondrally; 7 plates were applied 4.5 mm to 7.5 mm proximal to the subchondral zone. The specimens were loaded with 800-N loads for 2,000 cycles to evaluate radial shortening in the 2 groups. Each specimen then was loaded to failure. RESULTS: Radial shortening was significantly greater when the distal screws were placed proximal to the subchondral zone. The amount of shortening after cyclic loading correlated significantly with the distance the distal screws were placed from the subchondral zone. Rigidity of the plate systems was significantly higher in radiuses in which the distal screws were placed close to the subchondral zone. CONCLUSIONS: To maintain radial length after volar fixed-angle plating, placement of the distal screws as subchondral as possible is essential. The subchondral plate-screw-bone constructs showed significantly greater rigidity, indicating higher resistance to postoperative loads and displacement forces.     

Biomechanical stability of a fixed-angle volar plate versus fragment-specific fixation system: cyclic testing in a C2-type distal radius cadaver fracture model

PURPOSE: To compare the biomechanical stability of 2 recently introduced fixation systems in an intra-articular, dorsal comminution distal radius fracture model. METHODS: AO/ASIF type C2 fractures were simulated in 10 matched pairs of fresh-frozen cadaveric arms randomized between fixed-angle volar plate and fragment-specific fixation systems. Specimens were loaded in extension cyclically for 2,000 repetitions followed by a single cycle to failure. Initial, intermediate, and final stiffness values and failure load values were obtained and compared. RESULTS: Both systems were able to sustain physiologic cyclic loading. The fragment-specific system was significantly stiffer than the fixed-angle volar plate system for the ulnar segment in both the precycle and postcycle values. No other comparisons were significant with respect to stiffness. No significant difference in load to failure was found between the systems with respect to ulnar, radial, or overall fragment displacement. CONCLUSIONS: Both fixed-angle volar plate and fragment-specific fixation systems performed comparably in a simulated early postoperative motion protocol. Fragment-specific fixation had improved stiffness characteristics only with respect to the smaller ulnar-sided fragment.     

T型钢板内固定治疗桡骨远端不稳定性骨折

目的探讨T型钢板治疗桡骨远端不稳定性骨折的疗效。方法对19例桡骨远端不稳定性骨折患者采用T型钢板内固定治疗。结果 18例获得随访（1例失访）,时间6~23个月,骨折均骨性愈合。疗效根据Dienst et al评分系统进行评定：优9例,良7例,一般2例。结论 T型钢板内固定是治疗桡骨远端不稳性骨折较好的方法。     

Low-profile dorsal plating for dorsally angulated distal radius fractures: an outcomes study

PURPOSE: Controversy exists surrounding the effectiveness and complications associated with dorsal plating for distal radius fractures. This study evaluated the functional outcome of dorsal plating for dorsally angulated distal radius fractures at a single institution. METHODS: Thirty patients formed the study cohort. All plates were low profile and stainless steel. Radiographic parameters, range of motion, and strength compared with the uninjured side were recorded. The functional outcome was evaluated by the Disabilities of the Arm, Shoulder, and Hand questionnaire and the Gartland and Werley scoring system. RESULTS: The median patient age at surgery was 59 years. The median follow-up period was 18 months. According to the AO classification system, there were 4 type A fractures, 5 type B fractures, and 21 type C fractures. The median preoperative dorsal angulation was 30 degrees, and the median postoperative angulation was -4 degrees volar. Sixteen patients with fractures had an intra-articular step-off or gap, which were all corrected to neutral by the procedure. Seven patients with the fractures showed positive ulnar variance, all corrected to neutral at time of follow-up evaluation. Compared with the contralateral side, the mean extension and flexion were 88% and 81%, respectively; pronation and supination were 89% and 87%, respectively; and grip strength and thumb pinch were 78% and 94%, respectively. The mean postoperative Disabilities of the Arm, Shoulder, and Hand questionnaire score was 15 points, and 28 patients had Gartland and Werley scores of good or excellent. No patients needed to have their plates removed, and no extensor tendon rupture was reported. One patient lost reduction, 1 patient needed a tenolysis of the extensor pollicis longus tendon, and 2 patients required the removal of a single metaphyseal screw. CONCLUSIONS: Results from this study show that patients can expect to have 80% of their range of motion and strength after dorsal plating for distal radius fractures. Moreover, 93% of the patients will have good to excellent functional outcomes. Complications from dorsal plating may be caused by the specific plate used, rather than by the technique itself, supporting a dorsal approach for dorsally angulated distal radius fractures.     

掌侧接骨板治疗老年桡骨远端背侧移位骨折临床分析

目的 探讨掌侧万向锁定加压双柱接骨板治疗老年人桡骨远端背侧移位骨折的临床疗效。方法 分析2012年7月至2015年7月采用掌侧万向锁定加压双柱接骨板治疗的37例桡骨远端背侧移位C型骨折患者,男 11例,女26例;年龄60～78岁,平均70．7岁;骨折按AO分型：c1型7,c2型13例,c3型17例。末次随访时通过术后X线片评估桡骨远端骨折复位情况、测量各项影像学参数,并采用Gart land---Werley评定疗效。结果 所有患者术后获6～27个月(平均19．6个月)随访。X线片示骨折愈合时间3～4个月,平均3．5个月。按照Garland—Werley评分：优16例,良 14例,可6例,1例因疼痛再次手术,优良率81.08％,无感染及不愈合。末次随访时桡骨茎突高度 8．30～12．52 mm,平均10．42mm;掌倾角10°～14.20°,平均12．60°;尺偏角 17.30°～23.40°,平均2I．00°。结论 掌侧万向锁定加压双柱接骨板是治疗老年桡骨远端背侧移位骨折的有效方法。     

Volar versus dorsal plating in the management of intra-articular distal radius fractures

PURPOSE: To compare the complications and functional and radiographic outcomes of volar and dorsal plating of intra-articular distal radius fractures. METHODS: This retrospective review included 34 patients found by searching a database of 350 patients treated for distal radius fractures. Inclusion criteria were (1) at least 1 year of follow-up data and (2) open reduction and internal fixation of a multifragmentary fragment intra-articular distal radius fracture with either a nonlocking volar or dorsal plate. Twenty patients were treated with a dorsal plate and 14 patients were treated with a volar nonlocking plate. Objective and subjective outcome parameters were compared between the 2 groups. Objective evaluations included wrist range of motion, grip strength, and preoperative and postoperative radiographic parameters (radial inclination, palmar tilt, ulnar variance, fracture pattern). Subjective evaluations were performed using the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire score and the Gartland and Werley score. RESULTS: Volar plating resulted in a significantly better Gartland-Werley score compared with dorsal plating. There were no significant differences in the DASH score.Volar collapse was documented in 5 of the 20 patients in the dorsal plating group, which resulted in a mild loss of pronation compared with the volar plating group. No collapse occurred in the volar plating group. In addition the difference in the percentage of wrist range of motion compared with the contralateral wrist was not significant. Dorsal plating was associated with a ruptured extensor indicis tendon in 1 patient; secondary surgical procedures were required in 4 patients (tenolyses and radial styloidectomy). Volar plating was associated with median nerve neuropathy in 2 patients and intersection syndrome in one. CONCLUSIONS: Although both groups of patients had similar DASH scores the functional outcome in terms of Gartland and Werley scores was better in the volar plating group. In addition there was a higher rate of volar collapse and late complications in the dorsal plating group compared with the volar plating group. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic, Level III.     

A meta-analysis of outcomes of external fixation versus plate osteosynthesis for unstable distal radius fractures

PURPOSE: External fixation and open reduction and internal fixation have been the traditional techniques for surgical fixation of unstable distal radius fractures. The existing literature has not identified which is superior, primarily because of the lack of comparative trials. We performed a comprehensive systematic review and meta-analysis of the current literature on external fixation and internal fixation of distal radius fractures to determine the dominant strategy based on available scientific evidence. METHODS: We searched MEDLINE and EMBASE for English-language articles published between 1980 and 2004 that satisfied predetermined inclusion and exclusion criteria. The outcomes of internal and external fixation were compared using continuous measures of grip strength, wrist range of motion, and radiographic alignment and categoric measures of pain, physician-rated outcome scales, and complication rates. Outcomes were pooled by random-effects meta-analysis and meta-regression analysis was used to control for patient age, presence of intra-articular fracture, duration of follow-up period, and date of publication. Sensitivity analyses were used to test the stability of the meta-analysis results under different assumptions. RESULTS: Forty-six articles were included in the review with 28 (917 patients) external fixation studies and 18 (603 patients) internal fixation studies. Meta-analysis did not detect clinically or statistically significant differences in pooled grip strength, wrist range of motion, radiographic alignment, pain, and physician-rated outcomes between the 2 treatment arms. There were higher rates of infection, hardware failure, and neuritis with external fixation and higher rates of tendon complications and early hardware removal with internal fixation. Considerable heterogeneity was present in all studies and adversely affected the precision of the meta-analysis. CONCLUSIONS: The current literature offers no evidence to support the use of internal fixation over external fixation for unstable distal radius fractures. Comparative trials using appropriately sensitive and validated outcome measurements are needed to guide treatment decisions.     

外固定支架结合经皮交叉穿针固定治疗不稳定型桡骨远端骨折

目的探讨外固定支架结合经皮交叉穿针固定治疗不稳定型桡骨远端骨折的临床疗效。方法采用外固定支架结合经皮交叉穿针固定治疗34例不稳定型桡骨远端骨折患者。结果患者均获得随访,时间6~14个月。X线检查显示,骨折端解剖复位,固定牢靠,骨性愈合。按Green-O'brien腕关节评分标准评估:优26例,良6例,一般2例,优良率为94.1%。无钉道感染、骨髓炎、医源性神经肌腱伤和交感神经反射性骨营养不良等并发症。2例发生关节僵硬,经积极功能锻炼后症状好转。结论外固定支架结合经皮交叉穿针固定治疗不稳定型桡骨远端骨折能达到解剖复位,固定可靠,且有效减轻术后腕关节功能障碍。     

掌侧与背侧钢板固定关节外桡骨远端背侧粉碎性骨折的生物力学研究

目的 探讨掌侧与背侧钢板固定桡骨远端背侧粉碎性骨折时的抗压缩、抗扭转差异性.方法 将12侧新鲜成人尸体桡骨标本制成桡骨远端背侧粉碎性骨折模型,随机分为2个大组,分别进行掌侧与背侧钢板螺钉固定;再将每个大组分为2个亚组,分别进行轴向压缩试验和水平扭转试验.检测指标:轴向压缩强度、轴向压缩刚度、水平扭转强度和水平扭转刚度.结果 在轴向压缩试验中,掌、背侧两组之间轴向压缩强度差异有统计学意义(P＜0.05),背侧组大于掌侧组;在生理压缩载荷下,掌、背侧两组刚度值差异有统计学意义(P＜0.05),背侧组高于掌侧组.在水平扭转试验中,两组水平扭转强度与扭转刚度差异都没有统计学意义,但数据显示,掌侧组都略强于背侧组.结论 在抗压缩方面,两组的压缩强度以及压缩刚度差异均有统计学意义,背侧组要优于掌侧组;而在抗旋转方面,两组的扭转强度与扭转刚度差异均无统计学意义,但掌侧组在数据上均稍大于背侧组.     

掌侧斜T形钢板治疗老年桡骨远端不稳定性骨折

[目的]探讨掌侧斜T形钢板在治疗老年桡骨远端不稳定性骨折的应用及临床治疗效果。[方法]2001年1月~2003年4月使用掌侧斜T形钢板治疗老年桡骨远端不稳定性骨折42例。男18例,女24例;年龄60~75岁,平均65.1岁。按AO分类:A2型4例,A3型7例,B1型5例,B3型3例,C1型9例,C2型11例,C3型3例。28例骨缺损破坏严重,支撑不满意的行人工骨植入恢复局部稳定性。[结果]全部病例得到12~24个月随访,平均18.2个月。X线片检查结果:掌倾角平均3.66°(-7°~10°),尺偏角20.1°(15°~25°),桡骨短缩6例,平均1.59mm(1~5 mm),短缩≥4 mm的2例,关节面分离、移位6例,平均>1 mm(1~4 mm)。平均关节活动度:掌屈58.2°(30°~70°),背伸55.6°(25°~65°),桡偏16.5°(10°~25°),尺偏24.6°(20°~30°),前臂旋前79.2°(60°~90°),旋后70.1°(50°~90°);握力平均为对侧的65%(35%~105%)。根据Sarm iento改良Gartland andW erley评分标准,优25例、良11例、可4例、差2例。[结论]掌侧斜T形钢板治疗老年桡骨远端不稳定骨折是安全有效的治疗选择。可提供稳定的固定,早期功能训练,获得较好的效果,避免背侧固定固有的并发症。充分植骨能有效防止复位丢失。     

Results of dorsal or volar plate fixation of AO type C3 distal radius fractures: a retrospective study

PURPOSE: The aim of this study was to define the outcome after dorsal or volar plating of Association for Osteosynthesis (AO) type C3 distal radius fractures based on the fracture morphology. METHODS: Twenty-nine patients with AO type C3 distal radius fractures were surgically managed between 1996 and 2005. Group 1 (n = 15) had volar plating. Group 2 (n = 14) had dorsal plating. Outcomes were evaluated at an average of 22 months after surgery. Statistical analysis was performed using the Wilcoxon test and chi-square test. RESULTS: No significant differences were seen for the scores of Gartland and Werley, Castaing, Stewart I and II, Green and O'Brien, and Disability of the Arm, Shoulder and Hand between the 2 groups. The visual and verbal pain analog scales did not show significant differences between the 2 groups. Radiology analysis showed significant difference in comparison with the contralateral side in terms of dorsopalmar inclination (3 degrees +/- 3) and distal radioulnar joint angle (98 degrees +/- 8) for the patients in group 1, whereas there were no significant differences in group 2. The development of radiographic post-traumatic arthritis was significant in both groups. Significant functional differences were seen for flexion (45 degrees +/- 15) and hand span (20 cm +/- 2) in group 1 as well as for extension (37 degrees +/- 19), flexion (42 degrees +/- 12), and radial deviation (16 degrees +/- 10) in group 2. We found more complications after dorsal plate osteosynthesis than after volar plate osteosynthesis. CONCLUSIONS: This study shows satisfactory functional and subjective outcome results in both groups. Group 1 had non-significant better functional results than group 2, whereas both groups showed good to very good radiology results.     

掌侧锁定钢板结合外支架治疗C型桡骨远端不稳定骨折

目的探讨掌侧锁定钢板结合外支架治疗c型桡骨远端不稳定骨折的临床疗效。方法应用T形或斜T形掌侧锁定钢板及跨腕关节外支架治疗24例c型桡骨远端不稳定骨折患者。结果22例获得随访,时间6～29个月。按Lidstrom评分系统行影像学评价：优12例,良7例,中3例。依据Cooney评分法对腕关节功能进行评价：优17例,良3例,一般2例。无严重并发症发生。结论．对C型桡骨远端骨折应用掌侧锁定钢板结合外支架治疗能够起到坚强固定和早期活动的作用,可较早恢复腕关节功能,临床效果良好。