Shoulder replacement surgery is widely researched and recognised as an effective intervention for reducing pain and improving function in patients with severe shoulder degeneration. Optimal outcomes are often achieved when combined with post-operative physiotherapy. However, recovery is not always linear. Even after a promising early result, setbacks can occur, highlighting the importance of ongoing rehabilitation and monitoring.
The Role of Physiotherapy Following Shoulder Replacement
Post-operative physiotherapy will initially focus on pain control, protection of repaired tissues, and the gradual restoration of range of movement; Early rehabilitation. As healing continues, strength and function-based training are introduced to restore stability and the shoulder ability to tolerate loads and forces.
The shoulder relies heavily on the surrounding musculature. The group of muscle called the rotator cuff—and particularly the subscapularis muscle —plays a central role in keeping the joint stable post-operatively. Evidence reveals subscapularis dysfunction after shoulder replacement is associated with pain, weakness, reduced range of motion, and poorer functional outcomes.
Case Study: Early Success Followed by Functional Regression
A recent patient case study illustrates this well. The patient underwent a total shoulder replacement, including subscapularis tendon release (cut) and repair. Post-operatively, rehabilitation progressed rapidly, with early return of functional use. The patient even successfully returned to sporting activity that included predominant use of their upper limbs. They reported high levels of confidence in the shoulder at the time.
More recently, however, the patient developed a progressive decline in their function. Pain increased and range of movement plateaued. This revealed a clear regression from their previous post-operative progress. This decline began to impact both daily activities and rehabilitation process.
Clinical Findings and Imaging
Assessment revealed a marked reduction in range of movement with associated discomfort. Imaging revealed changes in the subscapularis tendon in-line with a tendinopathy diagnosis.
These findings are consistent with the literature from research articles. They show that tendon overload and altered biomechanics—rather than prosthetic (shoulder replacement) failure—are common contributors to late-onset of pain following shoulder arthroplasty.
Why Setbacks Can Occur After A Shoulder Replacement
While early improvements can be encouraging, tendons adapt more slowly than muscle. A rapid return to sport or repetitive loading activities can exceed tendon capacity, particularly in surgically repaired structures (such as the subscapularis in the case study example).
Studies highlight that subscapularis healing and strength deficits may persist long after surgery and require careful load progression to avoid symptom recurrence.
The pre-operative quality of surrounding soft-tissue structures, and the extent of prior degeneration, can significantly influence post-operative outcomes and the likelihood of rehabilitation setbacks. In the context of the above case study, current research suggests that the pre-operative condition of the subscapularis tendon may influence specific functional gains following surgery.
This reinforces the importance of long-term physiotherapy guidance, even after a patient has successfully moved on from early rehabilitation.
Key Message for Patients
Shoulder replacement can deliver outstanding results, yet it can be common to notice increasing pain or stiffness without optimum management.
Early assessment and specific physiotherapy can prevent minor setbacks from becoming long-term restrictions by identifying tendon overload, advising on the appropriate load/function and help protect your surgical repair.
A structure post-operative physiotherapy assessment and plan are available at Ebrook Osteopathy and Sports clinic. We can help optimise your recovery and prevent future setbacks.
References
- Gerber C, Pennington SD, Nyffeler RW. (2005). Subscapularis muscle function after total shoulder replacement. Journal of Shoulder and Elbow Surgery.
- Denard PJ, Lädermann A. (2016). Immediate versus delayed passive range of motion following total shoulder arthroplasty. Journal of Shoulder and Elbow Surgery.
- Sheth U, et al. (2017). Complications associated with total shoulder arthroplasty. Bone & Joint Journal.
- Miller BS, et al. (2013). Subscapularis dysfunction following shoulder arthroplasty. Journal of Bone and Joint Surgery.
