Arthrodèse radioscapholunaire avec excision du scaphoïde

Scapholunate Instability: Diagnosis and Management - Classification and Treatment Considerations - Part 2

Intervention for scapholunate instability is aimed at halting the degenerative process by restoring ligament integrity and normalizing carpal kinematics. Part 1 of this Current Concepts article reviewed the anatomy, kinematics, and biomechanical properties of the scapholunate ligament as well as its critical stabilizers. In this section, we provide a foundation for understanding the spectrum of scapholunate ligament instability and incorporate meaningful new anatomical insights that influence treatment considerations. These updates clarify the importance of the critical stabilizers of the scapholunate interval, ligament-specific considerations in scapholunate ligament reconstruction, and the risks of ligament disinsertion when surgically exposing the dorsal wrist. We propose a ligament-based treatment algorithm based on the stage of injury, degree and nature of ligament damage, and presence of arthritic changes.

Radiolunate arthrodesis and scaphoidectomy combined to Sauvé-Kapandji procedure as treatment of wrist osteoarthritis: Clinical and radiological results

OBJECTIVE

The aim of this study was to analyze clinical and radiological results for 1-stage radiolunate arthrodesis and scaphoidectomy associated to the Sauvé-Kapandji procedure, to alleviate pain and conserve wrist motion.

METHODS

Seven patients (8 wrists) with symptomatic osteoarthritis of the radiolunate and distal radioulnar joints were treated from 1999 to 2016. Mean age at surgery was 49 years and M/F sex ratio was 6/1. Etiologies were distal radial intra-articular malunion for 6 patients and bilateral gouty arthritis for 1. The procedure was performed by a dorsal approach in a single step. Pain was assessed on visual analogue scale (VAS). Pre- and post-operative active flexion-extension and pronation-supination were compared. The secondary endpoint was onset of postoperative complications.

RESULTS

At a mean 71 months' follow-up (range, 30-168 months), there was significant reduction in pain (VAS, 0.5/10; p < 0.0001). Motion results were satisfactory, with 32° flexion, 39° extension, for a non-significant decrease of 11° and 5° respectively; pronation and supination were significantly increased, by a mean 23° and 30° respectively. Three wrists (37.5%) required a second surgery. There were no cases of surgical site infection or non-union.

CONCLUSION

Radiolunate arthrodesis and scaphoidectomy combined to Sauvé-Kapandji procedure was an effective solution for the treatment of symptomatic radiolunate and distal radioulnar osteoarthritis.

LEVEL OF EVIDENCE

IV.

Clinical, functional, and radiological results of the Amandys® interposition arthroplasty in 13 cases of wrist osteoarthritis

Amandys® pyrocarbon interposition arthroplasty is intended for widespread arthritis of the wrist. The aim of this study was to assess the clinical, functional, and radiological results of this arthroplasty with a minimum follow-up of 12 months. This retrospective single-center study brought together all osteoarthritis indications that can benefit from an Amandys® arthroplasty. Twenty-one implants were used between January 2011 and October 2018. There were seven cases of distal radius malunion, eight SLAC wrists, two SNAC wrists, two cases of Kienböck's disease at Lichtman's stage 4, and two aftermaths of inflammatory arthritis. Twenty-four percent of patients had previously undergone another type of surgery for this wrist arthritis. Six implants were removed, five early for dislocation and one after 6 years for chronic pain. Thirteen patients were reviewed with an average follow-up of 40.7 months (21-90). The average pain level on a visual analog scale was 3.1/10 (0-7). The mean range motion was 36° flexion (10-60) and 33° extension (15-50). The mean grip strength at the last follow-up was 14.8 kg (2-30) (43% of contralateral). The average QuickDASH and PRWE functional scores were 37.9/100 (0-80) and 29.6/100 (0-83.5), respectively. Amandys® interposition arthroplasty is an interesting alternative to total wrist fusion or total wrist prosthesis for widespread arthritis of the wrist. For the implant to be stable, the capsulo-ligamentous systems must be intact.

Fibulo-scapho-lunate fusion after resection of the distal radius: Case series, review of the literature and critical analysis of bone fixation

Fibulo-scapho-lunate fusion is a technique that allows residual movement in the wrist in case of wide bone resection replacing the distal radius by a vascularised fibular transfer. Some authors have used this technique with favourable results but the distal synthesis seems to not be standardised at all, many different osteosynthesis methods have been proposed. This paper reports a complete review of the present day literature about this subject and, evaluating the different proposed osteosynthesis techniques referred in literature, suggests a standardization of the synthesis methods with dorsal plating. We report some technical considerations and results of three cases operated with a stable dorsal osteosynthesis (twice with a double plate and once with a long plate). We evaluate the time of healing and the clinical result.

Radioscapholunate arthrodesis versus radiolunate arthrodesis in rheumatoid wrist surgery: Clinical and radiographic outcomes

Radiolunate arthrodesis is a validated surgical technique in rheumatoid wrist surgery. When the radioscaphoid joint is involved or when there is radiolunate instability, a radioscapholunate arthrodesis must be preferred. The objective was to compare clinical and radiographic outcomes for both types of arthrodesis. Patients were evaluated retrospectively at a minimal follow-up of 12 months after radiolunate arthrodesis (RL-A group) or radioscapholunate arthrodesis (RSL-A group). Mean follow-up was 10.7 years (1-25 years). One hundred and one patients were included in RL-A group and 26 in RSL-A group. At follow-up, pain level was significantly reduced by 3.7 points and by 2.9 points in RL-A and RSL-A groups, respectively. Mobility in flexion/extension was significantly reduced by 25° in both groups. DASH and PRWE scores were 42.9 and 41.4 in RL-A group, 41.8 and 20.6 in RSL-A group, respectively. Larsen stage for the midcarpal joint increased significantly in both groups (+0.8 in RL-A group; +0.9 in RSL-A group), carpal height index decreased (-0.03 in RL-A group (significant); -0.02 in RSL-A group (non-significant)), carpal ulnar translation index increased (+0.038 in RL-A group; +0.037 in RSL-A group), without significant difference between both groups. Nonunion rate was significantly higher in RSL-A group (62%) than in RL-A group (30%). A pain free and functional wrist can be obtained after radiolunate and radioscapholunate arthrodesis. However, arthritis lesions and carpal deformities increased with follow-up similarly with both surgical techniques. Our results have shown that radiolunate arthrodesis remains a reliable surgical procedure for advanced rheumatoid wrist.

Adaptive Proximal Scaphoid Implant (APSI): 10-year outcomes in patients with SNAC wrists

Radioscaphoid arthroplasty with the Adaptive Proximal Scaphoid Implant (APSI^®) is an attractive treatment alternative in the short and medium term for patients with early scaphoid non-union advanced collapse (SNAC) wrist. The purpose of our study was to determine the long-term outcomes of this implant in SNAC wrists. All patients who received the implant from October 2002 to October 2010 were included. A clinical and radiographic study was performed. Our case series included 39 patients, of which 33 were contacted, with a mean follow-up of 10 years (5.8-13.4). Most of the patients had stage-1 SNAC wrist (95%). There were nine complications (27%), seven of which required reoperation: implant dislocation (44%) or progression of the carpal degeneration (33%). Ninety-six percent of patients contacted were satisfied or very satisfied with their surgery (although 21% needed a second surgery) with a Mayo Wrist Score of 80/100 and a Patient-Rated Wrist Evaluation of 17.5/100. Wrist strength was 86% of the contralateral side. Flexion-extension range was 101° and pain assessed using a visual analog scale was at 1.2 (0-6). We report satisfactory and lasting results with the APSI^®, similar to those of scaphoid excision with four-corner fusion and proximal row carpectomy. Hence, the APSI^® is a reliable alternative for treating osteoarthritis in SNAC wrists.

Clinical and radiological outcomes following radioscapholunate fusion

INTRODUCTION

Radioscapholunate (RSL) fusion is typically performed following wrist trauma. It addresses the pain caused by radiocarpal osteoarthritis but reduces the wrist's mobility. The objective of this study was to determine the long-term clinical and radiological outcomes of this procedure.

MATERIALS AND METHODS

This was a retrospective study of all wrists operated for RSL fusion in our surgery unit over a 12-year period. The clinical analysis consisted of joint amplitudes, grip strength, pain (VAS) and functional scores (PRWE, QuickDash, Mayo Wrist Score). The radiological analysis focused on bone fusion and the presence of midcarpal osteoarthritis.

RESULTS

This surgery procedure was performed on 48 wrists. Of these, 34 patients were available for review, including 6 who had subsequently undergone total wrist fusion after the RSL procedure. The average follow-up was 53 months. Flexion/extension and radioulnar deviation were 56° and 30°, respectively. Grip strength in the operated wrist was 71% of the contralateral wrist. The mean pain level was 3 out of 10. The PRWE, QuickDash and Mayo Wrist Score were 35.7, 44.5 and 57.2, respectively. Seventy-nine percent of patients were satisfied with the outcome. The fusion rate was 71%, the midcarpal osteoarthritis rate was 64% and the STT osteoarthritis rate was 46%.

DISCUSSION

Reduced wrist range of motion in patients who have undergone RSL fusion helps to preserve satisfactory function in the majority of patients; however, the functional outcome scores point to some hindrance in day-to-day activities. Nonunion occurred in nearly one-quarter of patients and appears to be preventable by excision of the distal pole of the scaphoid (DPS). Midcarpal osteoarthritis develops in most wrists over the long-term and appears to be inevitable.

CONCLUSION

RSL fusion is a palliative procedure that preserves some of the wrist's mobility. However, it is a difficult procedure that has a significant nonunion rate. Excision of the DPS may contribute to lowering the nonunion rate.

Salvage of a post-traumatic arthritic wrist using the scaphoid as an osteochondral graft

The authors describe a case of post-traumatic wrist arthritis with an osteochondral defect in the scaphoid fossa of the radius. The patient was treated with proximal row carpectomy, radial styloidectomy and reconstruction of the defect using the proximal half of the scaphoid as an autologous osteochondral graft. Pain relief was achieved while wrist motion and strength were improved. The carpal bones are a source of osteochondral grafts and can be used to expand the indications of motion-preserving wrist salvage procedures.

Scapholunate instability: current concepts in diagnosis and management

Injuries to the scapholunate joint are the most frequent cause of carpal instability and account for a considerable degree of wrist dysfunction, lost time from work, and interference with activities. Although it is insufficient to cause abnormal carpal posture or collapse on static radiographs, an isolated injury to the scapholunate interosseous ligament may be the harbinger of a relentless progression to abnormal joint mechanics, cartilage wear, and degenerative changes. Intervention for scapholunate instability is aimed at arresting the degenerative process by restoring ligament continuity and normalizing carpal kinematics. In this review, we discuss the anatomy, kinematics, and biomechanical properties of the scapholunate articulation and provide a foundation for understanding the spectrum of scapholunate ligament instability. We propose an algorithm for treatment based on the stage of injury and the degree of secondary ligamentous damage and arthritic change.

[Scaphoidectomy (instead of trapezectomy) in the treatment of rhizoarthrosis. Report of a case]

INTRODUCTION

Surgery site errors and technical errors in hand surgery are rare and not often published.

OBSERVATION

A 46-year-old patient with rhizoarthrosis of the left hand was initially treated by mistake in another center by a scaphoidectomy instead of a trapezectomy. She was seen in consultation 6months later, still suffering from her rhizoarthrosis and with carpal instability, clinically symptomatic and radiologically confirmed. The instability of the wrist was treated by a hamatocapito-lunar arthrodesis and a trapeziometacarpal arthrodesis was performed to treat the rhizoarthrosis. The clinical and radiological results were acceptable.

DISCUSSION

Besides the paradigmatic error, this observation confirms that the excision of the scaphoid quickly leads to a destabilization of the wrist, the capitatum no longer maintaining its alignment under the lunatum, and leads to a limitation of the wrist mobility and a loss of strength. The hamato-capito-lunate arthrodesis described in 1997 can treat wrist instability and only the trapeziometacarpal arthrodesis can, in the absence of scaphoid, treat the problem of rhizoarthrosis.

CONCLUSION

The authors recommend to always carry out a radiography of the wrist during trapezectomy surgery when there is doubt about the identification of the trapezium.